Simon Klemperer
Professor of Geophysics and, by courtesy, of Earth and Planetary Sciences
Web page: http://geo.Stanford.EDU/~sklemp/
Bio
I lead the "Crustal" research group within the Department of Geophysics. We study structure, tectonics, deformation, growth and composition of the continental lithosphere, largely using active and passive seismology. Our emphasis is the creative combination of the full range of geologic and geophysical data, existing or of our own collection, analyzed often using relatively standard techniques, rather than striving to create entirely new methodologies - though in the last few years we have significantly improved the VDSS (SsPmp) method, and have created the Sn/Lg method to test whether continental earthquakes are have hypocenters aboove or below the Moho. For 25 years I have studied Tibet and the Himalaya, including the INDEPTH reflection/refraction transect across the Plateau, analysis of broadband campaign data from India, Nepal and China, and most recently geochemical and isotopic studies of geothermal fluids to tackle the questions that seismology can’t reach. I helped institute, and have continued to be faculty director of, the SE3 Summer Undergraduate Research program that places and mentors >20 Stanford frosh/sophomores in SE3 research opportunities each year, and until recently was Director of Undergraduate Studies in Geophysics.
Administrative Appointments
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Technical Assistant, Rutherford Laboratory, Chilton, Oxfordshire (1976 - 1977)
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Research Associate, BIRPS, Cambridge University (1985 - 1987)
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Royal Society University Research Fellow, BIRPS, Cambridge University (1987 - 1990)
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Visiting Scientist, U.S. Geological Survey (1985 - 1985)
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Associate Professor, Stanford University (1990 - 2005)
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Associate Professor (by courtesy) Geological and Environmental Sciences, Stanford University (1995 - 2005)
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Visiting Professor in Geology, Royal Holloway, University of London (1999 - 2004)
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Professor (by courtesy) Geological and Environmental Sciences, Stanford University (2005 - Present)
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Professor of Geophysics, Stanford University (2005 - Present)
Honors & Awards
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Exceptional Reviewer, Geological Society of America (2023)
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Union Fellow, American Geophysical Union (2018)
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Cox Medallist, Allan V. Cox Medal for faculty excellence fostering undergraduate research (2008)
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Fellow, Geological Society of America (1995)
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President's Award, Geological Society of London (1988)
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Fellow, Royal Society University Research Fellowship (1987 - 1990)
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Milton Dobrin Scholar, Society of Exploration Geophysicists (1982 - 1984)
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Distinguished Lecturer, NSF-MARGINS program (2008-2010)
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School of Earth Sciences Excellence in Teaching Award, Stanford University (2010)
Boards, Advisory Committees, Professional Organizations
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Department of Geophyics Fellowship Committee, Chair, Stanford University (2012 - Present)
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NASA Review Panel, Earth Surface and Interior (2012 - 2012)
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Career Advisory Board, Career Development Center, Stanford University (2011 - Present)
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Editorial Advisory Board, Himalayan Geology (2011 - Present)
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Department of Geophysics Graduate Admissions Committee, Stanford University (2011 - 2018)
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Invited Speaker, International Symposium on Deep exploration of the Lithopshere, Beijing (2011 - 2011)
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Scientific Advisor, Sinoprobe, China's national program to explore the deep structure of China (2010 - Present)
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SES Computational Earth Sciences Committee, Stanford University (2010 - 2018)
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Co-convener, 25th Himalaya-Karakoram-Tibet International Workshop, San Francisco, June (2010 - 2010)
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Lead Convener, NSF Workshop on "Future directions for NSF-sponsored geoscience research in the Himalaya/Tibet" (2010 - 2010)
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Chair, Geophysics Undergraduate Curriculum Committee, Stanford University (2009 - 2010)
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Aurora Forum public lecture and KQED radio broadcast, Tibet, where continents and cultures collide (2009 - 2009)
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Invited speaker, Gravity & Magnetics Luncheon, Society of Exploration Geophysicists (2009 - 2009)
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Committee on Review of Undergraduate Majors (C-RUM) of the Academic Council, Stanford University (2008 - 2011)
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NSF-MARGINS Distinguished Lecture tour, Lamont, U of Arizona, UC Riverside, SF State, SMU, MSU, Chapman, UC Ft.Collins, PGS (2008 - 2010)
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Planning committee, NSF-MARGINS program, Second Decade (2008 - 2008)
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Chair, Thompson Postdoctoral Fellow search, Stanford University (2007 - Present)
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Co-Director, School of Earth Sciences (Summer) Undergraduate Research program, Stanford University (2007 - Present)
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Freshman Advisor, Stanford University (2007 - 2010)
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Secretary, U.S. Commission on Controlled-Source Seismology (2007 - 2010)
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Director, Geophysics (Summer) Undergraduate Research Program, Stanford University (2006 - 2006)
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Director of Undergraduate Studies, Department of Geophysics, Stanford University (2005 - 2018)
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GES Undergraduate Curriculum Committee, Stanford University (2005 - 2006)
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SES Diversity Committee, Stanford University (2005 - 2006)
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Convenor, Earthscope Workshop, 3D seismic reflection at the SAFOD site (2005 - 2005)
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Convenor, US-Africa Workshop, Anatomy of Continental Rifts, Addis Ababa (2004 - 2004)
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Keynote speaker, Channel Flow in Continental Collision Zones, Geological Society, London (2004 - 2004)
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University EHS Earthquake Building Assessment Team, Stanford University (2003 - Present)
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Geophysics Faculty Safety Representative, Stanford University (2002 - Present)
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ILP Project III-8 Committee Member, Processes and Geodynamics in the Formation and Exhumation of Ultrahigh-Pressure Metamorphic Terrain (2002 - 2005)
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Organizer, Stanford presence, AGU Academic Showcase (Fall) Meeting (2002 - 2005)
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Convenor, NSF-IFREE-MARGINS workshop, Izu-Bonin-Mariana Subduction Factory (2002 - 2002)
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Convenor, The George Thompson Symposium: The Lithosphere of Western North America and its Geophysical Characterization, Stanford University (2001 - 2001)
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Department Admissions Chair, Stanford University (2000 - 2005)
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Invited speaker, universities of Cambridge, Durham, London, Leicester (1999 - 1999)
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Member, NSF EAR Continental Dynamics Review Panel (1998 - 2004)
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Earth Sciences Library Committee, Stanford University (1997 - Present)
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Member, NSF EAR-OCE MARGINS Science Committee (1997 - 2002)
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Member, ILP Project Team, Ocean-Continent Lithosphere Boundary (1997 - 1999)
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Earth Sciences Ocean Margins Initiative Committee, Stanford University (1995 - 1998)
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Director, School of Earth Sciences Geographic Information Systems Lab, Stanford University (1994 - 1999)
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Sophomore Advisor, Stanford, Stanford University (1992 - 2005)
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Ex Officio member, IRIS Standing Committee, Program for Array Seismic Studies of the Continental lithosphere (1992 - 1999)
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Freshman Advisor, Stanford University (1991 - 2005)
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Stanford Rhodes-Marshall Panel, Stanford University (1991 - 2005)
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Director, IRIS-PASSCAL Instrument Center (1991 - 1998)
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Faculty Advisor, Masters in Exploration and Development Program, Stanford University (1990 - 1998)
Program Affiliations
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Center for East Asian Studies
Professional Education
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Ph.D., Cornell University, Geophysics (1985)
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M.A., Cambridge University (1984)
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B.A., Cambridge University, Mineralogy and Petrology (1980)
Current Research and Scholarly Interests
Biographical Information
I attended Cambridge University as an undergraduate; took my PhD at Cornell University within the Consortium for Continental Reflection profiling (COCORP) then returned to Cambridge to work with the British Institutions Reflection Profiling Syndicate (BIRPS), latterly as a Royal Society Research Fellow. In 1990 I joined Stanford University, where I continue research into crustal structure and evolution.
Research
I study the growth, tectonic evolution, and deformation of the continents (see my Google Scholar profile). My research group undertakes field experiments in exemplary areas such as, currently, the Tibet plateau (formed by collision between Indian and Asia - we're working on the northern, Kunlun, and the southern, Himalayan, boundaries of the Plateau); the actively extending Basin-&-Range province of western North America (we are working on the Ruby Range Metamorphic Core Complex in Nevada, and the leaky transform beneath the Salton Trough in southernmost California); and in recent years the Ethiopian rift valley (where the African continent is being pulled apart) and the Mariana island chain (where new crust is forming beneath active volcanoes). We create controlled seismic sources—explosions—to drive sound waves into the Earth, and from our recordings of reflected waves at distant receivers, we form images of the deep structure and measure the physical properties of the continents. We also use the transmitted sound waves from distant earthquakes, the temporal fluctuations of natural electrical fields in the Earth, and small spatial variations of Earth's gravitational and magnetic fields for the same purposes. We maintain an ultra-low frequency electromagnetic (ULFEM) network of stations on the San Andreas fault system in the San Francisco Bay Area in an attempt to learn whether or not ULFEM earthquake precursors exist.
Teaching
I direct the geophysics undergraduate program, which we have recently re-invigorated with the development of a new course sequence. I co-lead the School of Earth Sciences Undergraduate Research Program that now involves 25 undergraduates each summer, drawn from across the university to all four Departments of the School of Earth Sciences. Over the last decade I have personally mentored 14 undergraduates (7 women) in research projects that have led to 4 undergraduate-authored peer-reviewed publications. I am recipient of the 2008 Allan V. Cox Medal for fostering undergraduate research. I teach graduate classes in seismic reflection methodology (3-quarter sequence), an upper-level undergraduate class in global tectonics and a complementary multi-day tectonics field trip to view large-scale structure of the western USA. I include undergraduates in my research teams in our field experiments, both in the western USA and internationally, and invite applications from Stanford students. My former graduate students are now professors in universities in the USA and abroad, research scientists at the U.S. Geological Survey, and exploration geophysicists in a range of oil companies and their service industries.
Professional Activities
I am an Advisor to SINOPROBE, China's national program to explore the deep structure of their lithosphere. I was an NSF-MARGINS Distinguished Lecturer, 2008-2010, and served on the 2008 NSF-MARGINS planning committee for the "Second Decade of MARGINS". Convenor, 25th Himalaya-Karakoram-Tibet Workshop, (2010); NSF Workshop, "Future directions for NSF-sponsored geoscience research in the Himalaya/Tibet" (2010); Earthscope Workshop, "3D seismic reflection at the SAFOD site" (2005); U.S.-Africa Workshop, "Anatomy of Continental Rifts", Addis Ababa (2004); NSF-IFREE-MARGINS workshop, "Izu-Bonin-Mariana Subduction Factory" (2002); "The George Thompson Symposium: The Lithosphere of Western North America and its Geophysical Characterization", Stanford University (2001). Member, NSF EAR Continental Dynamics Review Panel (1998-2004).
Projects
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SINOPROBE in western Tibet: the Karakoram Fault, Stanford and SINOPROBE
We have partnered with SinoProbe, the Chinese national scientific program led by CAGS (Chinese Academy of Geological Sciences) to study the lithosphere. We are helping to design experiments and analyze and interpret the resultant near-vertical and wide-angle seismic profiles across the Karakoram Fault (and elsewhere in Tibet). In complementary geochemical studies we are working with CAGS and NGRI (National Geophysical Research Institute of India) to sample thermal springs for mantle-sourced helium (3He), and analyzing these samples at Lawrence Berkeley National Laboratories. High 3He/3He ratios along the Karakoram fault demonstrate that this fault accesses Tibetan mantle and marks the 'mantle suture' in western Tibet.
Location
Tibet
Collaborators
- Ping Zhao, Associate Director, China Academy of Sciences-Institute of Tibet Plateau Research
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NAMASTE - Nepal Aftershock Monitoring Applied to Seismicity, Tectonics, Earthquakes, Stanford; Department of Mines & Geology, Nepal; UTEP; OSU
Following the devastating Gorkha earthquake in April 2015, Stanford sent seismometers to record aftershocks that we are now using to image the rupture surface of the earthquake. Ultimately 46 instruments were deployed for 11 months, providing a unique dataset. Subsequent outreach activities focused on training staff at Nepal's Department of Mines and Geology, and graduate students at Tribhuvan University, Kathmandu. Now we are planning for a wider imaging experiment to understand where and how the next Himalayan Megaquake may occur.
Location
Nepal
Collaborators
- Som Sapkots, Deputy Director General, Department of Mines and Geology, Ministry of Industry, Nepal
For More Information:
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HIMPROBE (a lithospheric geotransect across the Indian NW Himalaya), Stanford and NGRI
HIMPROBE is an Indian national project, active since 2000, to create a NW-Himalayan geotransect from the Sub-Himalaya to the Karakoram Range. Framework broadband seismology, broadband MT, the first phase of seismic reflection, and a comprehensive potential-field transect have already been conducted. Coupled with geological investigations, these projects make this area more data-rich than most regions of the orogen.
We have worked with NGRI (National Geophysical Research Institute) scientists on broadband passive seismic data, seismic reflection data, and geochemical sampling; and with IIT Roorkee scientists on geologic sampling and radiometric dating. At Stanford, we are using broadband seismic data from HIMPROBE to reveal lithospheric structure. We have analyzed the dispersion of fundamental mode Rayleigh waves and identified a low-velocity zone in the mid-crust north of the Indus-Tsangpo suture (ITS) coincident with a zone of high electrical conductivty observed by magnetotelluric measurements - a result consistent with active channel flow outwards from the Tibet Plateau. Our CCP images of broadband data from the Garwhal Himalaya suggest a major role for fluids in controlling the seismogenesis of the Main Himalayan Thrust.Location
Himalaya
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INDEPTH (International Deep Profiling of Tibet and the Himalaya), Stanford and Chinese Academy of Geological Sciences
Project INDEPTH (International Deep Profiling of Tibet and the Himalaya) is a multidisciplinary geophysical and geological investigation of the Himalayas and Tibet. Field projects associated with INDEPTH I, II, and III took place between 1992-2000 and covered Southern to Central Tibet. INDEPTH IV’s field season began in May/June 2007 with the acquisition of an active source seismic profile in NE Tibet.
Previous seismic studies have significantly elucidated the response of Asia to the impact of the Indian subcontinent from Southern to Central Tibet. The INDEPTH (International Deep Profiling of Tibet and the Himalaya) IV transect across the northeast boundary of Tibet completes a profile across the entire Tibetan plateau and is expected to clarify the subduction of Asian continental crust beneath the Tibetan Plateau along its northern margin and to probe the geometry and depth extent of the Kunlun Fault.
The collision of the Indian and Asian plates over the past ~55 Ma created the Himalaya and uplifted the Tibetan Plateau. During convergence both plates experienced significant deformation and crustal thickening. Debate continues regarding how Asia has responded to the embedding of the Indian subcontinent with theories including indentor tectonics leading to terrane escape along lithospheric strike-slip faults and lower-crustal ductile flow.
INDEPTH IV incorporates a wide variety of geophysical data. Our field studies commenced in summer 2007 with the acquisition of a 270 km, high-resolution controlled-source seismic profile across the Kunlun suture and the deployment of broadband seismometers across the Kunlun and Jinsha sutures for eighteen months recording. Magnetotellurics and geological mapping in 2008 will complement the seismic acquisition.
Chinese institutions involved in the multinational collaboration include the Chinese Academy of Geological Sciences (CAGS), Chengdu University of Technology, and China University of Geosciences. North American and European institutions include Cornell University, Stanford University, GeoForschungsZentrum Potsdam, Missouri, New Mexico State University, Cambridge, Alberta, Dublin Institute for Advanced Studies, University of Kiel, and University of Haifa.Location
Tibet
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Santa Catalina Island Terraces/Tectonics Low Energy Survey (SCITTLES)
The Southern California Continental Borderland records a complex history of the transition from a Cretaceous subduction to Miocene rifting to the current regime of transform tectonics. Tectonic deformation in southern California is currently dominated by the anastamosing faults of the North American-Pacific plate boundary (San Andreas Fault System). Vertical motions of the islands and coastline of southern California are elucidated by the presence of marine terraces (relict shorelines) observed on much of the coastline. Santa Catalina Island is conspicuous in its lack of uplifted marine terraces. Instead Catalina hosts spectacular submerged marine terraces as deep as 350m (~1150ft), in many ways equivalent to uplifted terraces on nearby islands. Catalina's submerged terraces are deeper than sea level fluctuations and therefore require subsidence.
My research focuses on the Quaternary tectonics of southern California, with a primary focus on the subsided/subsiding islands of the Channel Islands archipelago. I use high dynamic-range imaging techniques on bathymetric data to investigate seafloor morphology. These data are correlated with ultra high-resolution seismic data and fossil data from core samples to construct a 4D deformation history of a subsided island. Targets for 2014 investigation: Pilgrim Banks, Kidney Bank, and Catalina Island.Location
Santa Catalina, California
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Broadband Salton Seismic Imaging Project (bb-SSIP), Stanford
The Salton Trough was formed by past and current relative motions of the Pacific and North American tectonic plates. In its northern edge, the right-lateral transform boundary of the San Andreas Fault system turns into the divergent motion of the East Pacific Rise, which continues south through the Gulf of California. The Salton Trough is highly active: it exhibits a high rate of seismicity; contains major active faults; and geothermal activity is evident on the surface. Faults within the Salton Trough region accommodate together about 80% of the 5 cm/yr of relative Pacific–North American motion. Because the rift is buried beneath a thick pile of Colorado River sediments, surprisingly little is currently known about the total volume of intrusion into the crust and the magma distribution within and beyond the rift margins. This study will lead to a better understanding of magmatic dominated rifts as well as about extensional tectonics in general.
In January 2011, students and faculty from Stanford University have deployed a network of 40 seismometers across southernmost California from the Pacific Ocean to the Colorado River. These seismometers recorded earthquakes from around the world for a period of 2 years. The data collected over that two year period will be used to construct an image of the deep structure beneath the region, learning about the location of faults, the distribution of magma, and the thickness of the crust in the area. This will allow us to understand more about the tectonic plate boundary, and how that affects earthquakes and volcanism.Location
Salton Sea, California
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Passive Seismic Imaging of Ruby Mountains Core Complex, Stanford
This project will acquire high-resolution seismic data about the Ruby Mountains Core Complex in an effort to understand the processes that occurred during its formation. Information acquired about this area will lead to a better understanding of core complexes in other areas, as well as about extenstional tectonics in general. The Ruby Mountains, part of the Basin and Range in northeastern Nevada, are an excellent target area, as previous work provides geologic information at the surface, and seismic studies have been done in the surrounding area, though not over the Ruby Mountains themselves.
A metamorphic core complex is formed when highly deformed lower crustal rocks are exhumed in the footwall of a large detachment fault. Core complexes are common features both in continental extensional provinces such as the Basin and Range and at oceanic spreading centers, but broad questions still remain about their formation. The Ruby Mountains Core Complex has all the characteristic features of a metamorphic core complex, with a domed metamorphic-plutonic footwall, an unmetamorphosed hanging wall, and a mylonitic sub-horizontal sheared detachment separating them.
In June 2010, Stanford students deployed a passive broadband seismic array consisting of 50 stations with 5-10 km spacing in a line down the axis of the Ruby Range and two crossing profiles. The stations will collect seismic data for two years, which will be used to create a map of the subsurface in the area that can be used for interpretation.Location
Ruby Mountains, NV
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Ultra-low frequency electromagnetic monitoring of the San Andreas Fault, Stanford and U.S. Geological Survey
The Stanford ultra-low frequency electromagnetic (ULFEM) Monitoring Project is recording naturally varying electromagnetic signals adjacent to active earthquake faults, in an attempt to establish whether there is any variation in these signals before or after earthquakes.
Our project is collaborative with the U.S. Geological Survey and U.C. Berkeley. Lead scientists are Simon Klemperer (Stanford University), Jonathan Glen (U.S.G.S.) and Darcy Karakelian McPhee (U.S.G.S.)
Our initial sites are in the San Francisco Bay Area, monitoring different strands of the San Andreas fault system, and Jasper Ridge (JRSC), Marin Headlands (MHDL), and Briones (BRIB). Related sites in the greater San Francisco Bay Area are operated by U.C. Berkeley and by Quakefinder
Stanford University, in co-operation with the U.S.G.S. and with assistance from U.C. Berkeley, maintains three sites in the San Francisco Bay Area, monitoring different strands of the San Andreas fault system. These three sites (Jasper Ridge (JRSC), Marin Headlands (MHDL), and Briones (BRIB)) have three orthogonal magnetometers, and JRSC and BRIB additionally have two pairs of orthogonal 100-m horizontal electrodes. Our equipment is sensitive to natural field variations in the frequency (period) range 0.01 to 10 Hz (100 to 0.1 s).
Data sampled at 40 Hz are available online from three stations maintained by Stanford University in co-operation with the U.S.G.S and with asistance from U.C. Berkeley:
(JRSC) Jasper Ridge Biological Preserve, Stanford University
(MHDL) Marin Headlands, Golden Gate National Recreation Area
(BRIB) Russell Reservation, Briones Reserve, U.C.
and from two stations maintained by U.C. Berkeley with assistance from the U.S.G.S. and Stanford University:
(SAO) San Andreas Geophysical Observatory, Hollister
(PKD) Bear Valley Ranch,Parkfield
Station metadata can be found at the Berkeley Digital Seismic Network (BDSN) and Northern California Earthquake Data Center (NCEDC) sites including a brief listing of station location and operation dates and a description of each available channel.Location
San Francisco Bay Area
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EAGLE (Ethiopia-Afar Geoscientific Lithospheric Experiment)
US-EAGLE (Ethiopia-Afar Geoscientific Lithospheric Experiment) is the US component of the international EAGLE program to investigate modification of lithospheric structure during continental breakup. With US collaborators from UTEP, Penn State and SWMSU we are working with UK scientists from Leicester, London, Leeds and Edinburgh in a comprehensive investigation of the deep structure of the Main Ethiopian Rift, at the point where the archetypal narrow continental rift - the East African Rift - is becoming dominated by magmatism as it progresses towards ocean rifting in the Afar Triangle and southern Red Sea. Katie Keranen (crustal group graduate) and Ewenet Gashawbeza (crustal group graduate) are working on this project. Previously two undergraduates, Andrea Les and Michele Cash, worked on this project and assisted with fieldwork in Ethiopia. For more on the science objectives of the project, click here. In June 2004 Prof. Klemperer co-organized the NSF-funded US-Africa Workshop on Anatomy of Continental Rifts: The evolution of the East African Rift System from nascent extension to continental breakup in Addis Ababa, Ethiopia.
Location
Ethiopia
2024-25 Courses
- Geophysics Department Seminar
GEOPHYS 300 (Aut, Win) - Senior Seminar: Issues in Geophysics
GEOPHYS 199 (Win) - Tectonics
GEOPHYS 385E (Aut, Win, Spr) - Tectonics Field Trip
GEOPHYS 108, GEOPHYS 214 (Spr) -
Independent Studies (4)
- Honors Program
GEOPHYS 198 (Aut, Win, Sum) - Report on Energy Industry Training
GEOPHYS 255 (Aut) - Research in Geophysics
GEOPHYS 400 (Aut, Win, Spr, Sum) - Undergraduate Research in Geophysics
GEOPHYS 196 (Aut, Win, Spr, Sum)
- Honors Program
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Prior Year Courses
2023-24 Courses
- Geophysics Department Seminar
GEOPHYS 300 (Aut, Win) - Introduction to the Foundations of Contemporary Geophysics
EARTHSYS 110, GEOPHYS 110, GEOPHYS 215 (Win) - Senior Seminar: Issues in Earth Sciences
EPS 150, GEOPHYS 199 (Aut) - Tectonics
GEOPHYS 385E (Aut, Win, Sum)
2022-23 Courses
- Geophysics Department Seminar
GEOPHYS 300 (Aut, Win, Spr) - Senior Seminar: Issues in Earth Sciences
GEOLSCI 150, GEOPHYS 199 (Aut) - Tectonics
GEOPHYS 385E (Aut, Win, Spr)
2021-22 Courses
- Journey to the Center of the Earth
GEOLSCI 107, GEOLSCI 207, GEOPHYS 184, GEOPHYS 274 (Win) - Senior Seminar: Issues in Earth Sciences
GEOLSCI 150, GEOPHYS 199 (Aut) - Stanford Alpine Project Seminar
GEOLSCI 336 (Spr) - Tectonics
GEOPHYS 385E (Aut, Win, Spr, Sum) - Tectonics Field Trip
GEOLSCI 189, GEOLSCI 289, GEOPHYS 108, GEOPHYS 214 (Spr)
- Geophysics Department Seminar
Stanford Advisees
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Jason Craig -
Doctoral Dissertation Advisor (AC)
Jason Craig, Axel Wang -
Master's Program Advisor
Kendall Zylstra
All Publications
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Numerous Tibetan lower-crustal and upper-mantle earthquakes, detected by <i>Sn</i>/<i>Lg </i>ratios, suggest crustal delamination or drip tectonics
EARTH AND PLANETARY SCIENCE LETTERS
2024; 626
View details for DOI 10.1016/j.epsl.2023.118555
View details for Web of Science ID 001154959100001
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Strong Variability in the Thermal Structure of Tibetan Lithosphere
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2023; 128 (3)
View details for DOI 10.1029/2022JB026213
View details for Web of Science ID 000952812000001
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Assessment of a claimed ultra-low frequency electromagnetic (ULFEM) earthquake precursor
GEOPHYSICAL JOURNAL INTERNATIONAL
2022; 229 (3): 2081-2095
View details for DOI 10.1093/gji/ggab530
View details for Web of Science ID 000772624200002
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Limited underthrusting of India below Tibet: 3He/4He analysis of thermal springs locates the mantle suture in continental collision.
Proceedings of the National Academy of Sciences of the United States of America
2022; 119 (12): e2113877119
Abstract
SignificanceOur regional-scale geochemical dataset (3He/4He) resolves the geometry of the continental collision between India and Asia. Geophysical images have led to contradictory interpretations that India directly underthrusts Tibet as a horizontal plate or India subducts steeply into the mantle. Helium transits from mantle depths to the surface within a few millennia, such that the ratio of mantle-derived 3He to dominantly crust-derived 4He provides a snapshot of the subsurface. 3He/4He data from 225 geothermal springs across a >1,000-km-wide region of southern Tibet define a sharp boundary subparallel to the surface suture between India and Asia, just north of the Himalaya, delineating the northern limit of India at 80-km depth. The India-Asia collision resembles oceanic subduction with an asthenospheric mantle wedge.
View details for DOI 10.1073/pnas.2113877119
View details for PubMedID 35302884
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Tomographic Image of Shear Wave Structure of NE India Based on Analysis of Rayleigh Wave Data
FRONTIERS IN EARTH SCIENCE
2021; 9
View details for DOI 10.3389/feart.2021.680361
View details for Web of Science ID 000712771600001
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Love-wave normal modes discriminate between upper-mantle and crustal earthquakes: Simulation and demonstration in Tibet
EARTH AND PLANETARY SCIENCE LETTERS
2021; 571
View details for DOI 10.1016/j.epsl.2021.117089
View details for Web of Science ID 000684176000004
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Electromagnetic Field Generated by an Earthquake Source Due to Motional Induction in 3D Stratified Media, and Application to 2008 M-w 6.1 Qingchuan Earthquake
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2021; 126 (10)
View details for DOI 10.1029/2021JB022102
View details for Web of Science ID 000711968800048
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Western Gondwana imaged by S receiver-functions (SRF): New results on Moho, MLD (mid-lithospheric discontinuity) and LAB (lithosphere-asthenosphere boundary)
GONDWANA RESEARCH
2021; 96: 206-218
View details for DOI 10.1016/j.gr.2021.04.009
View details for Web of Science ID 000660541500003
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Uplifted marine terraces on Santa Catalina Island, California, USA
GEOLOGY
2021; 49 (7): E529
View details for DOI 10.1130/G49111C.1
View details for Web of Science ID 000675396700005
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Crustal-scale wedge tectonics at the narrow boundary between the Tibetan Plateau and Ordos block
EARTH AND PLANETARY SCIENCE LETTERS
2021; 554
View details for DOI 10.1016/j.epsl.2020.116700
View details for Web of Science ID 000604582500043
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Post-critical SsPmp and its applications to virtual deep seismic sounding (VDSS)-3: back-projection imaging of the crust-mantle boundary in a heterogeneous lithosphere, theory and application
GEOPHYSICAL JOURNAL INTERNATIONAL
2020; 223 (3): 2166–87
View details for DOI 10.1093/gji/ggaa332
View details for Web of Science ID 000605982100046
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Coseismic electric and magnetic signals observed during 2017 Jiuzhaigou M-w 6.5 earthquake and explained by electrokinetics and magnetometer rotation
GEOPHYSICAL JOURNAL INTERNATIONAL
2020; 223 (2): 1130–43
View details for DOI 10.1093/gji/ggaa374
View details for Web of Science ID 000592211500026
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Localized foundering of Indian lower crust in the India-Tibet collision zone.
Proceedings of the National Academy of Sciences of the United States of America
2020
Abstract
The deep structure of the continental collision between India and Asia and whether India's lower crust is underplated beneath Tibet or subducted into the mantle remain controversial. It is also unknown whether the active normal faults that facilitate orogen-parallel extension of Tibetan upper crust continue into the lower crust and upper mantle. Our receiver-function images collected parallel to the India-Tibet collision zone show the 20-km-thick Indian lower crust that underplates Tibet at 88.5-92°E beneath the Yarlung-Zangbo suture is essentially absent in the vicinity of the Cona-Sangri and Pumqu-Xainza grabens, demonstrating a clear link between upper-crustal and lower-crustal thinning. Satellite gravity data that covary with the thickness of Indian lower crust are consistent with the lower crust being only 30% eclogitized so gravitationally stable. Deep earthquakes coincide with Moho offsets and with lateral thinning of the Indian lower crust near the bottom of the partially eclogitized Indian lower crust, suggesting the Indian lower crust is locally foundering or stoping into the mantle. Loss of Indian lower crust by these means implies gravitational instability that can result from localized rapid eclogitization enabled by dehydration reactions in weakly hydrous mafic granulites or by volatile-rich asthenospheric upwelling directly beneath the two grabens. We propose that two competing processes, plateau formation by underplating and continental loss by foundering or stoping, are simultaneously operating beneath the collision zone.
View details for DOI 10.1073/pnas.2000015117
View details for PubMedID 32958679
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A Rapid Response Network to Record Aftershocks of the 2015 M 7.8 Gorkha Earthquake in Nepal
SEISMOLOGICAL RESEARCH LETTERS
2020; 91 (4): 2399–2408
View details for DOI 10.1785/0220190394
View details for Web of Science ID 000546992800003
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Duplex in the Main Himalayan Thrust illuminated by aftershocks of the 2015 M-w 7.8 Gorkha earthquake
NATURE GEOSCIENCE
2019; 12 (12): 1018-+
View details for DOI 10.1038/s41561-019-0474-8
View details for Web of Science ID 000499653700013
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Post-critical SsPmp and its applications to Virtual Deep Seismic Sounding (VDSS)-2: 1-D imaging of the crust/mantle and joint constraints with receiver functions
GEOPHYSICAL JOURNAL INTERNATIONAL
2019; 219 (2): 1334–47
View details for DOI 10.1093/gji/ggz370
View details for Web of Science ID 000491050200043
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Receiver-function imaging of the lithosphere at the Kunlun-Qaidam boundary, Northeast Tibet
TECTONOPHYSICS
2019; 759: 30–43
View details for DOI 10.1016/j.tecto.2019.03.015
View details for Web of Science ID 000467666000003
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Detection of a widespread mantle component of 3He in thermal springs of Lhasa Block and Tethyan Himalaya, eastern Tibet: evidence for roll-back of the Indian-Asian mantle suture south of the Yarlung suture zone, and asthenospheric upwelling beneath the Lhasa block
Acta Geologica Sinica
2019; 93 (5): 56-57
View details for DOI 10.1111/1755-6724.13934
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Late Quaternary subsidence of Santa Catalina Island, California Continental Borderland, demonstrated by seismic-reflection data and fossil assemblages from submerged marine terraces
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2019; 131 (1-2): 21–42
View details for DOI 10.1130/B31738.1
View details for Web of Science ID 000454928000002
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Lateral variation of the Main Himalayan Thrust controls the rupture length of the 2015 Gorkha earthquake in Nepal.
Science advances
2019; 5 (6): eaav0723
Abstract
The Himalaya orogenic belt produces frequent large earthquakes that affect population centers along a length of over 2500 km. The 2015 Gorkha, Nepal earthquake (Mw 7.8) ruptured the Main Himalayan Thrust (MHT) and allows direct measurements of the behavior of the continental collision zone. We study the MHT using seismic waveforms recorded by local stations that completely cover the aftershock zone. The MHT exhibits clear lateral variation along geologic strike, with the Lesser Himalayan ramp having moderate dip on the MHT beneath the mainshock area and a flatter and deeper MHT beneath the eastern end of the aftershock zone. East of the aftershock zone, seismic wave speed increases at MHT depths, perhaps due to subduction of an Indian basement ridge. A similar magnitude wave speed change occurs at the western end of the aftershock zone. These gross morphological structures of the MHT controlled the rupture length of the Gorkha earthquake.
View details for DOI 10.1126/sciadv.aav0723
View details for PubMedID 31249863
View details for PubMedCentralID PMC6594763
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Multi-stage evolution of the Ordos lithosphere from stochastic inversion of elevation, geoid, surface heat flow, Rayleigh wave dispersion data and magnetotelluric data
Acta Geologica Sinica
2019; 93 (5)
View details for DOI 10.1111/1755-6724.13963
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Mantle‐earthquake geothermometry of rejuvenated Proterozoic lithosphere, western Saudi Arabia
Acta Geologica Sinica
2019; 93 (5): 102-103
View details for DOI 10.1111/1755-6724.13964
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Deep‐seated lithospheric geometry in revealing collapse of the Tibetan Plateau
Acta Geologica Sinica‐English Edition
2019; 93 (5): 66
View details for DOI 10.1111/1755-6724.13940
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Deep‐seated lithospheric geometry in revealing collapse of the Tibetan Plateau
2019: 66
View details for DOI 10.1111/1755-6724.13940
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Post-critical SsPmp and its applications to Virtual Deep Seismic Sounding (VDSS)-1: sensitivity to lithospheric 1-D and 2-D structure
GEOPHYSICAL JOURNAL INTERNATIONAL
2018; 215 (2): 880–94
View details for DOI 10.1093/gji/ggy307
View details for Web of Science ID 000448789900009
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Deep-seated lithospheric geometry in revealing collapse of the Tibetan Plateau
EARTH-SCIENCE REVIEWS
2018; 185: 751–62
View details for DOI 10.1016/j.earscirev.2018.07.013
View details for Web of Science ID 000448493500034
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Two-stage Red Sea rifting inferred from mantle earthquakes in Neoproterozoic lithosphere
EARTH AND PLANETARY SCIENCE LETTERS
2018; 497: 92–101
View details for DOI 10.1016/j.epsl.2018.05.048
View details for Web of Science ID 000440529100010
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Cross-validation of independent ultra-low-frequency magnetic recording systems for active fault studies
EARTH PLANETS AND SPACE
2018; 70
View details for DOI 10.1186/s40623-018-0823-7
View details for Web of Science ID 000430256000001
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Cross-validation of independent ultra-low-frequency magnetic recording systems for active fault studies.
Earth, planets, and space : EPS
2018; 70 (1): 57
Abstract
When working with ultra-low-frequency (ULF) magnetic datasets, as with most geophysical time-series data, it is important to be able to distinguish between cultural signals, internal instrument noise, and natural external signals with their induced telluric fields. This distinction is commonly attempted using simultaneously recorded data from a spatially remote reference site. Here, instead, we compared data recorded by two systems with different instrumental characteristics at the same location over the same time period. We collocated two independent ULF magnetic systems, one from the QuakeFinder network and the other from the United States Geological Survey (USGS)-Stanford network, in order to cross-compare their data, characterize data reproducibility, and characterize signal origin. In addition, we used simultaneous measurements at a remote geomagnetic observatory to distinguish global atmospheric signals from local cultural signals. We demonstrated that the QuakeFinder and USGS-Stanford systems have excellent coherence, despite their different sensors and digitizers. Rare instances of isolated signals recorded by only one system or only one sensor indicate that caution is needed when attributing specific recorded signal features to specific origins.
View details for DOI 10.1186/s40623-018-0823-7
View details for PubMedID 31258377
View details for PubMedCentralID PMC6560705
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Sycamore Knoll: A wave-planed pop-up structure in a sinistral-oblique thrust system, Southern California Continental Borderland
DEEP-SEA RESEARCH PART II-TOPICAL STUDIES IN OCEANOGRAPHY
2018; 150: 132–45
View details for DOI 10.1016/j.dsr2.2018.03.002
View details for Web of Science ID 000438005700011
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Seismostratigraphy of a submerged coastal transition zone: Precise determination of paleocoastal environments during the last glacial maximum from high-resolution 3D multichannel seismic
SEG Technical Program Expanded Abstracts
Society of Exploration Geophysicists.. 2018: 1599–1602
View details for DOI 10.1190/segam2018-2998308.1
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Nonuniform subduction of the Indian crust beneath the Himalayas
SCIENTIFIC REPORTS
2017; 7: 12497
Abstract
Himalayan tectonic activity is triggered by downward penetration of the Indian plate beneath the Asian plate. The subsurface geometry of this interaction has not been fully investigated. This study presents novel constraints on this geometry provided by two newly obtained, deep seismic reflection profiles. The profiles cover 100- and 60-km transects across the Yarlung-Zangbo suture of the Himalaya-Tibet orogen at c. 88°E. Both profiles show a crustal-scale outline of the subducting Indian crust. This outline clearly shows Indian understhrusting southern Tibet, but only to a limited degree. When combined with a third seismic reflection profile of the western Himalayas, the new profiles reveal progressive, eastward steepening and shortening in the horizontal advance of the subducting Indian crust.
View details for PubMedID 28970535
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Crustal structure of the Ruby Mountains metamorphic core complex, Nevada, from passive seismic imaging
GEOSPHERE
2017; 13 (5): 1506–23
View details for DOI 10.1130/GES01472.1
View details for Web of Science ID 000418430700009
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New Frontiers in Ocean Exploration The E/V Nautilus, NOAA Ship Okeanos Explorer, and R/V Falkor 2016 Field Season
OCEANOGRAPHY
2017; 30 (1): 1-?
View details for Web of Science ID 000399232200001
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West-east transition from underplating to steep subduction in the India-Tibet collision zone revealed by receiver-function profiles
EARTH AND PLANETARY SCIENCE LETTERS
2016; 452: 171-177
View details for DOI 10.1016/j.epsl.2016.07.051
View details for Web of Science ID 000383005800016
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Crustal-scale duplexing beneath the Yarlung Zangbo suture in the western Himalaya
NATURE GEOSCIENCE
2016; 9 (7): 555-?
View details for DOI 10.1038/NGEO2730
View details for Web of Science ID 000379823800023
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Rapid variation in upper-mantle rheology across the San Andreas fault system and Salton Trough, southernmost California, USA
GEOLOGY
2016; 44 (7): 575-578
View details for DOI 10.1130/G37847.1
View details for Web of Science ID 000379358300027
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3D imaging of subducting and fragmenting Indian continental lithosphere beneath southern and central Tibet using body-wave finite-frequency tomography
EARTH AND PLANETARY SCIENCE LETTERS
2016; 443: 162-175
View details for DOI 10.1016/j.epsl.2016.03.029
View details for Web of Science ID 000375508800016
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Nautilus Samples Program
OCEANOGRAPHY
2016; 29 (1): 14–17
View details for Web of Science ID 000374098100002
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Hidden intrabasin extension: Evidence for dike-fault interaction from magnetic, gravity, and seismic reflection data in Surprise Valley, northeastern California
GEOSPHERE
2016; 12 (1): 15-25
View details for DOI 10.1130/GES01173.1
View details for Web of Science ID 000369539200002
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Weakly coupled lithospheric extension in southern Tibet
EARTH AND PLANETARY SCIENCE LETTERS
2015; 430: 171-177
View details for DOI 10.1016/j.epsl.2015.08.025
View details for Web of Science ID 000363070600017
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San Andreas Fault dip, Peninsular Ranges mafic lower crust and partial melt in the Salton Trough, Southern California, from ambient-noise tomography
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
2015; 16 (11): 3946-3972
View details for DOI 10.1002/2015GC005970
View details for Web of Science ID 000368454300010
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Receiver function imaging of crustal suture, steep subduction, and mantle wedge in the eastern India-Tibet continental collision zone
EARTH AND PLANETARY SCIENCE LETTERS
2015; 414: 6-15
View details for DOI 10.1016/j.epsl.2014.12.055
View details for Web of Science ID 000350183900002
- Weakly Coupled Lithospheric Extension in Southern Tibet Earth Planetary Science Letters 2015
- Receiver function imaging of crustal suture, steep subduction, and mantle wedge in the eastern India–Tibet continental collision zone. Earth and Planetary Science Letters 2015; 414: 6-15
- Receiver-function imaging of overlapping Mohos at the Kunlun- Qaidam boundary, Northeast Tibet Geophysical Journal International 2015
- Hidden intra-basin extension: Evidence for dike-fault interaction from magnetic, gravity, and seismic reflection data in Surprise Valley, NE California. Geosphere 2015
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Zhongjie Zhang (1964-2013) Obituary
TECTONOPHYSICS
2014; 627: 4–5
View details for DOI 10.1016/j.tecto.2013.09.023
View details for Web of Science ID 000339535000002
- Receiver Function Imaging of the Ruby Mountains Metamorphic Core Complex 2014
- Ambient Noise Tomography of Southern California Images Dipping San Andreas-Parallel Structure and Low-Velocity Salton Trough Mantle 2014
- Geochemical Characterization and Geothermometry of Thermal Springs of Northwest India 2014
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Crustal structure across northeastern Tibet from wide-angle seismic profiling: Constraints on the Caledonian Qilian orogeny and its reactivation
TECTONOPHYSICS
2013; 606: 140-159
View details for DOI 10.1016/j.tecto.2013.02.040
View details for Web of Science ID 000326420900011
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Normal faulting from simple shear rifting in South Tibet, using evidence from passive seismic profiling across the Yadong-Gulu Rift
TECTONOPHYSICS
2013; 606: 178-186
View details for DOI 10.1016/j.tecto.2013.03.019
View details for Web of Science ID 000326420900014
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Characterizing the Main Himalayan Thrust in the Garhwal Himalaya, India with receiver function CCP stacking
EARTH AND PLANETARY SCIENCE LETTERS
2013; 367: 15-27
View details for DOI 10.1016/j.epsl.2013.02.009
View details for Web of Science ID 000319848300002
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Ambient-noise tomography of north Tibet limits geological terrane signature to upper-middle crust
GEOPHYSICAL RESEARCH LETTERS
2013; 40 (5): 808-813
View details for DOI 10.1002/grl.50202
View details for Web of Science ID 000318242900002
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Mantle fluids in the Karakoram fault: Helium isotope evidence
EARTH AND PLANETARY SCIENCE LETTERS
2013; 366: 59-70
View details for DOI 10.1016/j.eps1.2013.01.013
View details for Web of Science ID 000319177100007
- Discontinuous electrical conductivity across the Yarlung Zangbo Suture, Southern Tibet, implies a barrier to channel flow Journal of Geophysical Research 2013
- Castillo, C.M., Francis, R.D., Klemperer, S.L., Legg, M.R. Miocene to Quaternary vertical motion of the Channel Islands: signatures of transform tectonics. 2013
- Comments on "On the reported magnetic precursor of the 1989 Loma Prieta earthquake" by J. N. Thomas, J. J. Love, and M. J. S. Johnston Physics of the Earth and Planetary Interiors 2013
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Crustal structure across northeastern Tibet from wide-angle seismic profiling: Constraints on the Caledonian Qilian orogeny and its reactivation
Tectonophysics
2013
View details for DOI 10.1016/j.tecto.2013.02.040
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Normal faulting from simple shear rifting in South Tibet, using evidence from passive seismic profiling across the Yadong-Gulu Rift
Tectonophysics
2013
View details for DOI 10.1016/j.tecto.2013.03.019
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Crustal shear (S) velocity and Poisson's ratio structure along the INDEPTH IV profile in northeast Tibet as derived from wide-angle seismic data
GEOPHYSICAL JOURNAL INTERNATIONAL
2012; 191 (2): 369-384
View details for DOI 10.1111/j.1365-246X.2012.05616.x
View details for Web of Science ID 000309753800001
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A complex Tibetan upper mantle: A fragmented Indian slab and no south-verging subduction of Eurasian lithosphere
EARTH AND PLANETARY SCIENCE LETTERS
2012; 333: 101-111
View details for DOI 10.1016/j.epsl.2012.03.036
View details for Web of Science ID 000306884000011
- Rapid lateral variation of seismic anisotropy across the Salton Trough, Southern California AGU 2012 Fall meeting, T51B-2576 2012
- Repeated Mine Blasts Recorded on a Dense Broadband Array, Ruby Mountains, Nevada 2012 Fall Meeting, AGU 2012
- SKS anisotropy on a dense broadband array over the Ruby Mountains Metamorphic Core Complex, Nevada EOS Trans, AGU, Abstract S23A-2530 presented at 2012 Fall Meeting, AGU, San Francisco, CA 2012
- Stanford-USGS Ultra-Low Frequency Electromagnetic Network: Magnetometer Calibration Developments Poster 2012
- SinoProbe Seismic Reflection Imaging of an Upper-Crustal``Bright Spot'' Beneath the Karakoram Fault, West Tibet EOS Trans. AGU Abstract 2012
- Characterizing potential earthquake signals on the Stanford-USGS ultra-low frequency electromagnetic (ULFEM) array EOS Trans. AGU Abstract 2012
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Crustal structure beneath the Sub-Himalayan fold-thrust belt, Kangra recess, northwest India, from seismic reflection profiling: Implications for Late Paleoproterozoic orogenesis and modern earthquake hazard
EARTH AND PLANETARY SCIENCE LETTERS
2011; 308 (1-2): 218-228
View details for DOI 10.1016/j.epsl.2011.05.052
View details for Web of Science ID 000293486100023
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Injection of Tibetan crust beneath the south Qaidam Basin: Evidence from INDEPTH IV wide-angle seismic data
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2011; 116
View details for DOI 10.1029/2010JB007911
View details for Web of Science ID 000292613700003
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Crustal structure of the Paleozoic Kunlun orogeny from an active-source seismic profile between Moba and Guide in East Tibet, China
GONDWANA RESEARCH
2011; 19 (4): 994-1007
View details for DOI 10.1016/j.gr.2010.09.008
View details for Web of Science ID 000290508400011
- ATV magnetometer systems for efficient ground magnetic surveying The Leading Edge 2011; 30: 394-398
- Recruiting Undergraduates into the Earth Sciences Through Research CUR Quarterly (Journal of Council on Undergradute Research) 2011; 32: 22-31
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The northwestern margin of the Basin-and-Range Province, part 1: Reflection profiling of the moderate-angle (similar to 30 degrees) Surprise Valley Fault
TECTONOPHYSICS
2010; 488 (1-4): 143-149
View details for DOI 10.1016/j.tecto.2009.05.028
View details for Web of Science ID 000279624200010
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Crustal structure of the Tethyan Himalaya, southern Tibet: new constraints from old wide-angle seismic data
GEOPHYSICAL JOURNAL INTERNATIONAL
2010; 181 (3): 1247-1260
View details for DOI 10.1111/j.1365-246X.2010.04578.x
View details for Web of Science ID 000277716400004
- The Golmud Step; new details of the 15 km Moho offset between the Tibet Plateau and Qaidam Basin from INDEPTH IV seismic results 25th Himalaya-Karakoram-Tibet Workshop edited by Leech et al., 2010
- INDEPTH-IV seismic imaging of channel flow outwards from the Kunlun Mountains beneath the Qaidam Basin 25th Himalaya-Karakoram-Tibet Workshop edited by Leech, et al., 2010
- HIMPROBE deep seismic reflection profiling of the Sub-Himalayan fold-thrust belt, NW India: images of a possible “Ulleri-Wangtu” Paleoproterozoic accretionary orogenic event 25th Himalaya-Karakoram-Tibet Workshop edited by Leech et al. 2010
- Receiver function imaging in the western Himalaya, 25th Himalaya-Karakoram-Tibet Workshop edited by Leech et al. 2010
- Proceedings of the 25th Himalaya-Karakoram-Tibet Workshop U.S. Geological Survey Open-File Report 2010-1099 edited by Leech, M. L., Klemperer, S. L., Mooney, W. D. 2010
- (Website Documentation) - Using ULF-EM (Ultra-Low Frequency Electromagnetic) to serve data to the public Open-File Report U.S. Geological Survey. 2010
- Stanford-USGS Ultra-low frequency electromagnetic network: hardware developments in magnetometer calibration and recording 2010 AGU, Fall Meeting 2010
- SINOPROBE deep seismic reflection profiling across the Bangong-Nujiang Suture, central Tibet 25th Himalaya-Karakoram-Tibet Workshop, edited by Leech et al. 2010
- The Golmud Step; new details of the 15 km Moho offset between the Tibet Plateau and Qaidam Basin from INDEPTH IV seismic results 25th Himalaya-Karakoram-Tibet Workshop edited by Leech et al. 2010
- Anatomy of a metamorphic core complex: preliminary results of Ruby Mountains seismic experiment, northeastern Nevada 2010 AGU Fall Meeting 2010
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Partial melt in the upper-middle crust of the northwest Himalaya revealed by Rayleigh wave dispersion
TECTONOPHYSICS
2009; 477 (1-2): 58-65
View details for DOI 10.1016/j.tecto.2009.01.013
View details for Web of Science ID 000271776600006
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Low lower crustal velocity across Ethiopia: Is the Main Ethiopian Rift a narrow rift in a hot craton?
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
2009; 10
View details for DOI 10.1029/2008GC002293
View details for Web of Science ID 000265927900001
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Test of Deep Seismic Reflection Profiling across Central Uplift of Qiangtang Terrane in Tibetan Plateau
JOURNAL OF EARTH SCIENCE
2009; 20 (2): 438-447
View details for DOI 10.1007/s12583-009-0036-x
View details for Web of Science ID 000265653900017
- Temporal Changes in Apparent Resistivity on the Stanford-USGS Ultra-Low Frequency Electromagnetic Network EOS Trans AGU 2009; 89 (52)
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Nature of the crust beneath northwest Basin and Range province from teleseismic receiver function data
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2008; 113 (B10)
View details for DOI 10.1029/2007JB005306
View details for Web of Science ID 000260180000001
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Three-dimensional crustal structure of the Mariana island arc from seismic tomography
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2008; 113 (B1)
View details for DOI 10.1029/2007JB004939
View details for Web of Science ID 000252754200001
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Discontinuous and diachronous evolution of the Main Ethiopian Rift: Implications for development of continental rifts
EARTH AND PLANETARY SCIENCE LETTERS
2008; 265 (1-2): 96-111
View details for Web of Science ID 000253082300007
- Stanford-USGS Ultra-Low Frequency Electromagnetic Network: Status report and and data availability via the Web EOS Trans AGU 2008; 88 (52)
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Reconciling lithospheric deformation and lower crustal flow beneath central Tibet
Geology
2008; 36
View details for DOI 10.1130/G25097C.1
- Combining the PASSCAL and EarthScope Texan instrument pools for 3D and 3C imaging of the High Lava Plains, Oregon EOS Trans AGU 2008; 88
- Seismology across the northeastern edge of the Tibetan Plateau EOS, Transactions American Geophysical Union 2008; 89: 487
- U.S. Passive Margins: Are we missing an important opportunity? Eos, Transactions American Geophysical Union 2008; 89: 64-65
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Integration of the NEES T-Rex vibrator and PASSCAL Texan recorders for seismic profiling of shallow and deep crustal targets
SEISMOLOGICAL RESEARCH LETTERS
2008; 79 (1): 41-46
View details for Web of Science ID 000252417700006
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Temporal geochemical variation in Ethiopian Lakes Shala, Arenguade, Awasa, and Beseka: Possible environmental impacts from underwater and borehole detonations
JOURNAL OF AFRICAN EARTH SCIENCES
2007; 48 (2-3): 174-198
View details for DOI 10.1016/j.jafrearsci.2006.10.006
View details for Web of Science ID 000250411200013
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Crustal structure and evolution of the Mariana intra-oceanic island arc
GEOLOGY
2007; 35 (3): 203-206
View details for DOI 10.1130/G23212A.1
View details for Web of Science ID 000247627700003
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Seismoelectric imaging of shallow targets
GEOPHYSICS
2007; 72 (2): G9-G20
View details for DOI 10.1190/1.2428267
View details for Web of Science ID 000245441200027
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Crustal structure of the northwestern Basin and Range province and its transition to unextended volcanic plateaus
Geochemistry, Geophysics, Geosystems
2007; 8: 21
View details for DOI 10.1029/2006GC001429
- Seismic Anisotropy in the asthenosphere beneath the Eifel region, Western Germany Mantle plumes - A multidisciplinary approach edited by Ritter, J. R., Christensen, U. R. Springer-Verlag. 2007: 439–496
- Re-affirming the Magnetic Precursor to the 1989 Loma Prieta, CA, Earthquake Using Magnetic Field Data Collected in the US in 1989 and 1990 EOS Trans AGU 2007; 87 (52)
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Modeling sideswipe in 2D oceanic seismic surveys from sonar data: Application to the Mariana arc
11th International Symposium on Deep Seismic Profiling of the Continents and their Margins
ELSEVIER SCIENCE BV. 2006: 333–43
View details for DOI 10.1016/j.tecto.2006.01.027
View details for Web of Science ID 000238792100022
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Reply to comment by P.J. O'Brien on: "The onset of India-Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya" by Mary L. Leech, S. Singh, A.K. Jain, Simon L. Klemperer and R.M. Manickavasagam, Earth Planetary Science Letters 234 (2005) 83-97
EARTH AND PLANETARY SCIENCE LETTERS
2006; 245 (3-4): 817-820
View details for DOI 10.1016/j.epsl.2006.03.032
View details for Web of Science ID 000238672500026
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Distributed Nubia-Somalia relative motion and dike intrusion in the Main Ethiopian Rift
GEOPHYSICAL JOURNAL INTERNATIONAL
2006; 165 (1): 303-310
View details for Web of Science ID 000239689500024
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Crustal flow in Tibet: geophysical evidence for the physical state of Tibetan lithosphere, and inferred patterns of active flow
Conference on Channel Flow, Ductile Extrusion and Exhumation in Continental Collision Zones
GEOLOGICAL SOC PUBLISHING HOUSE. 2006: 39–70
View details for Web of Science ID 000245235500003
- Memorial for Doug Nelson Channel Flow, Ductile Extrusion and Exhumation in Continental Collision Zones edited by Law, R. D., Searle, M. P., Godin, L. Geological Society, London. 2006: ii-iv
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Crustal structure of the northern Main Ethiopian Rift from the EAGLE controlled-source survey; a snapshot of incipient lithospheric break-up
International Conference on East African Rift Systems - Geodynamics, Resources and Environment
GEOLOGICAL SOC PUBLISHING HOUSE. 2006: 269–292
View details for Web of Science ID 000239955900017
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Distributed Nubia-Somalia relative motion and dike intrusion in the Main Ethiopian Rift
Geophysical Journal International
2006
View details for DOI 10.1111/j.1365-246X.2006.02904.x
- Data report: Seismic reflection surveys of the Emperor Seamounts: ODP Leg 197 edited by Duncan, R. A., Tarduno, J. A., Davies, T. A., Scholl, D. W. ODP. 2006: 17 pp.
- Relics of Closure of an ancient ocean basin Imaging Earth History beneath the Ocean Floor National Science Foundation. 2006: 16
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Shear-wave splitting around the Eifel hotspot: evidence for a mantle upwelling
GEOPHYSICAL JOURNAL INTERNATIONAL
2005; 163 (3): 962-980
View details for Web of Science ID 000233435000010
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West-east variation in crustal thickness in northern Lhasa block, central Tibet, from deep seismic sounding data
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2005; 110 (B9)
View details for DOI 10.1029/2004JB003139
View details for Web of Science ID 000231728800001
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Seismic stratigraphy of Detroit Seamount, Hawaiian-Emperor seamount chain: Post-hot-spot shield-building volcanism and deposition of the Meiji drift
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
2005; 6
View details for DOI 10.1029/2004GC000705
View details for Web of Science ID 000230832500001
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Using seismic sensors to detect elephants and other large mammals: a potential census technique
JOURNAL OF APPLIED ECOLOGY
2005; 42 (3): 587-594
View details for DOI 10.1111/j.1365-2664.2005.01044.x
View details for Web of Science ID 000229581100018
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The onset of India-Asia continental collision: Early, steep subduction required by the timing of UHP metamorphism in the western Himalaya
EARTH AND PLANETARY SCIENCE LETTERS
2005; 234 (1-2): 83-97
View details for DOI 10.1016/j.epsl.2005.02.038
View details for Web of Science ID 000229693200007
- Ultra-low Frequency Electromagnetic Monitoring of Earthquakes in the San Francisco Bay Area: Initial Results of an Earthscope PBO Project EOS Trans AGU 2005; 86 (52)
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Shear wave splitting around hotspots: Evidence for upwelling-related mantle flow?
PLATES, PLUMES AND PARADIGMS
2005; 388
View details for DOI 10.1130/2005.2388(11)
View details for Web of Science ID 000271372500012
- Shear-wave splitting around hotspots: evidence for upwelling-related mantle flow? Plates, Plumes and Paradigms edited by Foulger, G. R., Natland, H., Presnall, D. C., Anderson, C. L. Geological Society of America. 2005: 171–192
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Three-dimensional seismic imaging of a protoridge axis in the Main Ethiopian rift
GEOLOGY
2004; 32 (11): 949-952
View details for DOI 10.1130/G20737.1
View details for Web of Science ID 000225006800006
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Shear-wave splitting in Ethiopia: Precambrian mantle anisotropy locally modified by Neogene rifting
GEOPHYSICAL RESEARCH LETTERS
2004; 31 (18)
View details for DOI 10.1029/2004GL020471
View details for Web of Science ID 000224122900002
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On the relationship between extension and anisotropy: Constraints from shear wave splitting across the East African Plateau
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2004; 109 (B8)
View details for DOI 10.1029/2003JB002866
View details for Web of Science ID 000223339400001
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Seismic waves from elephant vocalizations: A possible communication mode?
GEOPHYSICAL RESEARCH LETTERS
2004; 31 (11)
View details for DOI 10.1029/2004GL019671
View details for Web of Science ID 000221952200003
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Crustal structure of seismic velocity in southern Tibet and east-westward escape of the crustal material - An example by wide-angle seismic profile from Peigu Tso to Pumoyong Tso
SCIENCE IN CHINA SERIES D-EARTH SCIENCES
2004; 47 (6): 500-506
View details for DOI 10.1360/03yd0518
View details for Web of Science ID 000223147200003
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Shear-wave splitting beneath the Snake River Plain suggests a mantle upwelling beneath eastern Nevada, USA
EARTH AND PLANETARY SCIENCE LETTERS
2004; 222 (2): 529-542
View details for DOI 10.1016/j.epsl.2004.03.024
View details for Web of Science ID 000221993700014
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Detection of southward intracontinental subduction of Tibetan lithosphere along the Bangong-Nujiang suture by P-to-S converted waves
GEOLOGY
2004; 32 (3): 209-212
View details for DOI 10.1130/G19814.1
View details for Web of Science ID 000189284200009
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Three-dimensional seismic imaging of a proto-ridge axis in the Main Ethiopian Rift
Geology
2004; 32: 949-952
View details for DOI 10.1130/G20737.1
- Geochemical survey of lake and stream waters in central Ethiopia: no environmental impact from borehole explosions or large underwater explosions in Lakes Arenguade and Shala International Conference on the East African Rift System 2004: 40–44
- Shear-wave splitting in Ethiopia: Precambrian mantle anisotropy slightly modified by Neogene rifting International Conference on the East African Rift System 2004: 75–79
- EAGLE: The controlled source seismic project International Conference on the East African Rift System 2004: 134–38
- Seismic ground-velocity prediction based on shot distance, shot size, and shotpoint site environment in Ethiopia (EAGLE Project) International Conference on the East African Rift System 2004
- 3D seismic imaging of a proto-ridge axis in the Main Ethiopian Rift International Conference on the East African Rift System, June 20-24 2004, publ. ., pp. 2004: 102–6
- The life cycle of continental rifting as a focus for US-African scientific collaboration EOS, Transactions American Geophysical Union 2004; 85
- Shear-wave splitting reveals mantle upwelling beneath eastern Nevada Earth Planetary Science Letters 2004; 222: 529-542
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Deep reflection surveying in central Tibet: lower-crustal layering and crustal flow
GEOPHYSICAL JOURNAL INTERNATIONAL
2004; 156 (1): 115-128
View details for DOI 10.1111/j.1365-246X.2004.02119.x
View details for Web of Science ID 000187275000010
- Evidence for crustal structure influence on the evolution of the Main Ethiopian Rift International Conference on the East African Rift System 2004: 130-133
- A preliminary analysis of crustal structure variations along the Ethiopian Rift International Conference on the East African Rift System 2004: 97–101
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Tectonic Evolution of the Bristol Bay basin, southeast Bering Sea: Constraints from seismic reflection and potential field data
TECTONICS
2003; 22 (5)
View details for DOI 10.1029/2002TC001359
View details for Web of Science ID 000185653200001
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Reply to "Shear-wave splitting to test mantle deformation models around Hawaii" by Vinnik et al.
GEOPHYSICAL RESEARCH LETTERS
2003; 30 (13)
View details for DOI 10.1029/2002GL016712
View details for Web of Science ID 000184002200002
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Seismic imaging of the downwelling Indian lithosphere beneath central Tibet
SCIENCE
2003; 300 (5624): 1424-1427
Abstract
A tomographic image of the upper mantle beneath central Tibet from INDEPTH data has revealed a subvertical high-velocity zone from approximately 100- to approximately 400-kilometers depth, located approximately south of the Bangong-Nujiang Suture. We interpret this zone to be downwelling Indian mantle lithosphere. This additional lithosphere would account for the total amount of shortening in the Himalayas and Tibet. A consequence of this downwelling would be a deficit of asthenosphere, which should be balanced by an upwelling counterflow, and thus could explain the presence of warm mantle beneath north-central Tibet.
View details for Web of Science ID 000183181800043
View details for PubMedID 12775838
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Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling
GEOLOGY
2003; 31 (5): 435-438
View details for Web of Science ID 000182519200011
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INDEPTH III seismic data: From surface observations to deep crustal processes in Tibet
TECTONICS
2003; 22 (1)
View details for DOI 10.1029/2001TC001305
View details for Web of Science ID 000181833200001
- Observation of a Rayleigh wave induced by infrasonic elephant vocalizations: a possible communication mode? EOS, Transactions American Geophysical Union 2003; 84
- The George A. Thompson Volume: The Lithosphere of Western North America and its Geophysical Characterization Geological Society of America, International Book Series edited by Klemperer, S. L., Ernst, W. G. Geological Society of America. 2003; 7 (544pp.)
- Preface The George A. Thompson Volume: The Lithosphere of Western North America and its Geophysical Characterization edited by Klemperer, S. L., Ernst, W. G. Geological Society of America. 2003: 1–2
- The deep structure of the Himalaya and the Yarlung-Zangbo River Suture Zone edited by Zhao, W. J., Nelson, D., Brown, L., Kuo, J., Martyn, J., Meissner, R., Klemperer, S., Jones, A. Geophysical Publishing House, Beijing.. 2003
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Reply to Comment on "Crustal structure and exhumation of the Dabie Shan ultrahigh-pressure orogen, eastern China, from seismic reflection profiling" by Z.Y. Zhao and A.M. Fang
Geology
2003; 31
View details for DOI 10.1130/0091-7613(2003)312.0.CO;2
- Geophysical Project in Ethiopia Studies Continental Breakup EOS, Transactions American Geophysical Union 2003; 84: 342-343
- Deep seismic profiling across the Mariana arc-backarc system Deep Sea Research 2003; 23: 55-68
- Seismic imaging of the downwelling Indian lithosphere Beneath central Tibet Science 2003; 300: 1424-1427
- 'Subduction-Factory' meeting studies Izu-Bonin-Mariana margin EOS, Transactions American Geophysical Union 2003; 84: 3-7
- Measuring the seismic properties of Tibetan bright-spots: free aqueous fluids in the Tibetan middle crust (in Chinese) The deep structure of the Himalaya and the Yarlung-Zangbo River Suture Zone edited by Zhao, et al. Geophysical Publishing House, Beijing. 2003: 221–258
- An Overview of the Izu-Bonin-Mariana Subduction Factory Inside the Subduction Factory edited by Eiler, J., Hirschmann, M. American Geophysical Union. 2003: 175–222
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Ultra-low frequency electromagnetic measurements associated with the 1998 M-w 5.1 San Juan Bautista, California earthquake and implications for mechanisms of electromagnetic earthquake precursors
TECTONOPHYSICS
2002; 359 (1-2): 65-79
View details for Web of Science ID 000179278600004
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East-west crustal structure and "down-bowing" Moho under the northern Tibet revealed by wide-angle seismic proflle
SCIENCE IN CHINA SERIES D-EARTH SCIENCES
2002; 45 (6): 550-558
View details for Web of Science ID 000175593200008
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Analysis of ultralow-frequency electromagnetic field measurements associated with the 1999 M 7.1 Hector Mine, California, earthquake sequence
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
2002; 92 (4): 1513-1524
View details for Web of Science ID 000177016500028
- Preface Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002: v-ix
- Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses. Geological Society of America Special Paper edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002; 360 (pp. 1-387)
- Characteristics of volcanic rifted margins Magmatic Rifted Margins edited by Menzies, A., Klemperer, S. L., Ebinger, C., Baker, J. Geological Society of America . 2002: 1–14
- Crustal structure of the Bering and Chukchi Shelves: deep seismic reflection profiles across the North American continent between Alaska and Russia Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002: 1–24
- Crustal structure across the Bering Strait, Alaska: onshore recordings of a marine seismic seismic survey. Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002: 25–37
- Preface Magmatic Rifted Margins edited by Menzies, M. A., Klemperer, S. L., Ebinger, C., Baker, J. Geological Society of America . 2002: v-vi
- Magmatic Rifted Margins Geological Society of America Special Paper edited by Menzies, M. A., Klemperer, S. L., Ebinger, C. Geological Society of America. 2002; 362 (230 pp.)
- Geologic structure of Bering and Chukchi shelves adjacent to Bering-Chukchi deep seismic transect and tectonostratigraphic terranes of adjacent landmasses. Scale 1:3,000,000, 1 sheet Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002
- Constraints on the age of formation of seismically reflective middle and lower crust beneath the Bering Shelf: SHRIMP zircon dating of xenoliths from Saint Lawrence Island Tectonic Evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002: 195–208
- Low-fold, ultra-deep MCS Profiling of the Mariana Arc EOS Trans AGU 2002; 83
- Effect of Seafloor Topography on MCS Reflection Images and OBS Locations in the Mariana Subduction Factory Seismic Experiment EOS, Transactions American Geophysical Union 2002; 83 (47)
- Geographic Information Systems (GIS) compilation of geologic and tectonic data for the Bering Shelf, Chukchi Sea, Arctic Margin and adjacent landmasses Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Adjacent Landmasses edited by Miller, E. L., Grantz, A., Klemperer, S. L. Geological Society of America. 2002: 359–374
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Shear-wave splitting to test mantle deformation models around Hawaii
GEOPHYSICAL RESEARCH LETTERS
2001; 28 (22): 4319-4322
View details for Web of Science ID 000172032400042
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Crustal structure of central Tibet as derived from project INDEPTH wide-angle seismic data
GEOPHYSICAL JOURNAL INTERNATIONAL
2001; 145 (2): 486-498
View details for Web of Science ID 000168517600012
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Vertical extent of the newborn San Andreas fault at the Mendocino triple junction
GEOLOGY
2000; 28 (12): 1111-1114
View details for Web of Science ID 000165977500014
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CDP mapping to obtain the fine structure of the crust and upper mantle from seismic sounding data: an example for the southeastern China
Symposium on Developments in Imaging and Seismic Tomography of the Lithosphere-Asthenosphere System
ELSEVIER SCIENCE BV. 2000: 133–46
View details for Web of Science ID 000166231600010
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Crustal structure transition from oceanic arc to continental arc, eastern Aleutian Islands and Alaska Peninsula
EARTH AND PLANETARY SCIENCE LETTERS
2000; 179 (3-4): 567-579
View details for Web of Science ID 000088213600012
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Three-dimensional seismic velocity structure of the San Francisco Bay area
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2000; 105 (B6): 13859-13873
View details for Web of Science ID 000087628000043
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Three-dimensional seismic model of the Sierra Nevada arc, California, and its implications for crustal and upper mantle composition
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2000; 105 (B5): 10899-10921
View details for Web of Science ID 000087027400008
- Results from electromagnetic monitoring of the Mw 5.1 San Juan Bautista, California earthquake of 12 August 1998 3rd Conference on Tectonic Problems of the San Andreas fault system 2000: 334–46
- Volcanic rifted margins GSA Today 2000; 10: 8-11
- A transportable system for monitoring ultra low frequency electromagnetic signals associated with earthquakes Seismological Research Letters 2000; 71: 423-436
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Midcrustal reflector on INDEPTH wide-angle profiles: An ophiolitic slab beneath the India-Asia suture in southern Tibet?
TECTONICS
1999; 18 (5): 793-808
View details for Web of Science ID 000083043900004
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Measuring the seismic properties of Tibetan bright spats: Evidence for free aqueous fluids in the Tibetan middle crust
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
1999; 104 (B5): 10795-10825
View details for Web of Science ID 000080202000026
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Structure of an island-arc: Wide-angle seismic studies in the eastern Aleutian Islands, Alaska
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
1999; 104 (B5): 10667-10694
View details for Web of Science ID 000080202000018
- Geographic Information Systems (GIS) compilation of geophysical, geologic, and tectonic data for the circum-north Pacific USGS Open-File report 99-422, version 1.0 (CD-ROM) 1999
- INDEPTH wide-angle profiling traces mid-crustal reflector: an ophiolitic slab beneath the India-Asia suture in southern Tibet? Tectonics 1999; 18: 793-808
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Location of the southern edge of the Gorda slab and evidence for an adjacent asthenospheric window: Results from seismic profiling and gravity
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
1998; 103 (B12): 30101-30115
View details for Web of Science ID 000077966900021
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INDEPTH (International Deep Profiling of Tibet and the Himalaya) multichannel seismic reflection data: Description and availability
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
1998; 103 (B11): 26993-?
View details for Web of Science ID 000076918900008
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Evolution of the Gorda Escarpment, San Andreas fault and Mendocino triple junction from multichannel seismic data collected across the northern Vizcaino block, offshore northern California
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
1998; 103 (B10): 23813-23825
View details for Web of Science ID 000076373400004
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Ophiolitic basement to a forearc basin and implications for continental growth: The Coast Range Great Valley ophiolite, California
TECTONICS
1998; 17 (4): 558-570
View details for Web of Science ID 000075461400005
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Crustal deformation of the Lhasa terrane, Tibet plateau from Project INDEPTH deep seismic reflection profiles
TECTONICS
1998; 17 (4): 501-519
View details for Web of Science ID 000075461400002
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Special issue - Deep seismic profiling of the continents, I: General results and new methods - Preface
TECTONOPHYSICS
1998; 286 (1-4): IX-XIV
View details for Web of Science ID 000072943500001
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Fluids in the lower crust following Mendocino triple junction migration: Active basaltic intrusion?
GEOLOGY
1998; 26 (2): 171-174
View details for Web of Science ID 000071924000019
- Deep Seismic Profiling of the Continents: A Global Survey Tectonophysics 1998; 287: 292
- Earth Sciences Research at Norwegian Universities and Colleges: A Review Volume 1: Assessments, recommendations and conclusions prepared by the Review Committee Research Council of Norway, Oslo, Norway. 1998: 74
- Dedication. Drummond Hoyle Matthews, F.R.S., 5 February 1931 - 20 July 1997 Tectonophysics 1998; 286: vii
- Program focuses attention on continental margins EOS, Tansactions of the American Geophysical Union 1998; 79: 137,142
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Ophiolitic basement to the Great Valley forearc basin, California, from seismic and gravity data: Implications for crustal growth at the North American continental margin
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
1997; 109 (12): 1536-1562
View details for Web of Science ID A1997YL37100002
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Modeling low-frequency magnetic-field precursors to the Loma Prieta earthquake with a precursory increase in fault-zone conductivity
PURE AND APPLIED GEOPHYSICS
1997; 150 (2): 217-248
View details for Web of Science ID A1997YH90400004
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Partially Molten Middle Crust Beneath Southern Tibet: Synthesis of Project INDEPTH Results
Science (New York, N.Y.)
1996; 274 (5293): 1684-8
Abstract
INDEPTH geophysical and geological observations imply that a partially molten midcrustal layer exists beneath southern Tibet. This partially molten layer has been produced by crustal thickening and behaves as a fluid on the time scale of Himalayan deformation. It is confined on the south by the structurally imbricated Indian crust underlying the Tethyan and High Himalaya and is underlain, apparently, by a stiff Indian mantle lid. The results suggest that during Neogene time the underthrusting Indian crust has acted as a plunger, displacing the molten middle crust to the north while at the same time contributing to this layer by melting and ductile flow. Viewed broadly, the Neogene evolution of the Himalaya is essentially a record of the southward extrusion of the partially molten middle crust underlying southern Tibet.
View details for PubMedID 8939851
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INDEPTH wide-angle reflection observation of P-wave-to-S-wave conversion from crustal bright spots in Tibet
SCIENCE
1996; 274 (5293): 1690-1691
Abstract
Three-component wide-angle seismic data acquired in southern Tibet during Project INDEPTH show strong P-to-S converted reflections from reflectors that are aligned at a depth of approximately 15 kilometers beneath the northern Yadong-Gulu rift. These converted reflections are locally higher in amplitude than the corresponding P-wave reflections. Modeling of reflection mode conversion as a function of incidence angle indicates that this condition obtains for a reflector that is a solid over fluid interface; it is not typical of a solid-solid interface. The likely candidates for a fluid trapped within the crystalline crust of southern Tibet are granitic magma and water (brine).
View details for Web of Science ID A1996VW71200052
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Structural elements of the southern Tethyan Himalaya crust from wide-angle seismic data
TECTONICS
1996; 15 (5): 997-1005
View details for Web of Science ID A1996VL91400007
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Three-dimensional crustal structure of the southern Sierra Nevada from seismic fan profiles and gravity modeling
GEOLOGY
1996; 24 (4): 367-370
View details for Web of Science ID A1996UE64600020
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Transition from slab to slabless: Results from the 1993 Mendocino triple junction seismic experiment
GEOLOGY
1996; 24 (3): 195-199
View details for Web of Science ID A1996TY58900001
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Seismic reflections from the near-vertical San Andreas Fault
GEOPHYSICAL RESEARCH LETTERS
1996; 23 (3): 237-240
View details for Web of Science ID A1996TU59300008
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Origin of high mountains in the continents: The southern Sierra Nevada
SCIENCE
1996; 271 (5246): 190-193
View details for Web of Science ID A1996TP36400037
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SEISMIC EVIDENCE FOR A LOWER-CRUSTAL DETACHMENT BENEATH SAN-FRANCISCO BAY, CALIFORNIA
SCIENCE
1994; 265 (5177): 1436-1439
Abstract
Results from the San Francisco Bay area seismic imaging experiment (BASIX) reveal the presence of a prominent lower crustal reflector at a depth of approximately 15 kilometers beneath San Francisco and San Pablo bays. Velocity analyses indicate that this reflector marks the base of Franciscan assemblage rocks and the top of a mafic lower crust. Because this compositional contrast would imply a strong rheological contrast, this interface may correspond to a lower crustal detachment surface. If so, it may represent a subhorizontal segment of the North America and Pacific plate boundary proposed by earlier thermo-mechanical and geological models.
View details for Web of Science ID A1994PE73300045
View details for PubMedID 17833818
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DELINEATION AND CHARACTER OF THE ARCHEAN-PROTEROZOIC BOUNDARY IN NORTHERN SWEDEN
PRECAMBRIAN RESEARCH
1993; 64 (1-4): 67-84
View details for Web of Science ID A1993MT85500005
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DEEP SEISMIC-REFLECTION REFRACTION INTERPRETATION OF CRUSTAL STRUCTURE ALONG BABEL PROFILE-A AND PROFILE-B IN THE SOUTHERN BALTIC SEA
GEOPHYSICAL JOURNAL INTERNATIONAL
1993; 112 (3): 325-?
View details for Web of Science ID A1993KP45300002
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INTEGRATED SEISMIC STUDIES OF THE BALTIC SHIELD USING DATA IN THE GULF OF BOTHNIA REGION
GEOPHYSICAL JOURNAL INTERNATIONAL
1993; 112 (3): 305-324
View details for Web of Science ID A1993KP45300001
- Deep seismic reflection evidence for continental underthrusting beneath southern Tibet Nature 1993; 366: 557-559
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DEEP-STRUCTURE OF SOUTHERN IRELAND - A NEW GEOLOGICAL SYNTHESIS USING BIRPS DEEP REFLECTION PROFILING
JOURNAL OF THE GEOLOGICAL SOCIETY
1992; 149: 915-922
View details for Web of Science ID A1992KB87300007
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DEEP CRUSTAL PROBING - INTRODUCTION
PRECAMBRIAN RESEARCH
1992; 55 (1-4): 169-172
View details for Web of Science ID A1992HM23300014
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HIGH ELECTRICAL-CONDUCTIVITY IN A MODEL LOWER CRUST WITH UNCONNECTED, CONDUCTIVE, SEISMICALLY REFLECTIVE LAYERS
GEOPHYSICAL JOURNAL INTERNATIONAL
1992; 108 (3): 895–905
View details for DOI 10.1111/j.1365-246X.1992.tb03478.x
View details for Web of Science ID A1992HG62100016
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DEEP SEISMIC SURVEY IMAGES CRUSTAL STRUCTURE OF TORNQUIST ZONE BENEATH SOUTHERN BALTIC SEA
GEOPHYSICAL RESEARCH LETTERS
1991; 18 (6): 1091–94
View details for Web of Science ID A1991FR19000027
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CRUSTAL STRUCTURE OF THE CENTRAL AND SOUTHERN NORTH-SEA FROM BIRPS DEEP SEISMIC-REFLECTION PROFILING
JOURNAL OF THE GEOLOGICAL SOCIETY
1991; 148: 445-457
View details for Web of Science ID A1991HJ39300005
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RECORDING MARINE AIRGUN SHOTS AT OFFSETS BETWEEN 300-KM AND 700-KM
GEOPHYSICAL RESEARCH LETTERS
1991; 18 (4): 645-648
View details for Web of Science ID A1991FG82800018
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REFLECTIVITY OF A PROTEROZOIC SHIELD - EXAMPLES FROM BABEL SEISMIC PROFILES ACROSS FENNOSCANDIA
4TH INTERNATIONAL SYMP ON DEEP REFLECTION PROFILING OF THE CONTINENTAL LITHOSPHERE
AMER GEOPHYSICAL UNION. 1991: 77–86
View details for Web of Science ID A1991BW35J00010
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A DEEP SEISMIC-REFLECTION TRANSECT ACROSS THE IRISH CALEDONIDES
JOURNAL OF THE GEOLOGICAL SOCIETY
1991; 148: 149-?
View details for Web of Science ID A1991GP51700017
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EVIDENCE FOR EARLY PROTEROZOIC PLATE TECTONICS FROM SEISMIC REFLECTION PROFILES IN THE BALTIC SHIELD
NATURE
1990; 348 (6296): 34-38
View details for Web of Science ID A1990EF99400053
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REFLECTIONS FROM MANTLE FAULT ZONES AROUND THE BRITISH-ISLES
GEOLOGY
1990; 18 (6): 528-532
View details for Web of Science ID A1990DH31700012
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PROGRESS IN BIRPS DEEP SEISMIC-REFLECTION PROFILING AROUND THE BRITISH-ISLES
3RD INTERNATIONAL MEETING ON SEISMIC PROBING OF CONTINENTS AND THEIR MARGINS
ELSEVIER SCIENCE BV. 1990: 387–96
View details for Web of Science ID A1990CV73700037
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DATING THE SOURCE OF LOWER CRUSTAL REFLECTIVITY USING BIRPS DEEP SEISMIC PROFILES ACROSS THE LAPETUS SUTURE
3RD INTERNATIONAL MEETING ON SEISMIC PROBING OF CONTINENTS AND THEIR MARGINS
ELSEVIER SCIENCE BV. 1990: 445–54
View details for Web of Science ID A1990CV73700042
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A COMPARISON OF THE MOHO INTERPRETED FROM GRAVITY-DATA AND FROM DEEP SEISMIC-REFLECTION DATA IN THE NORTHERN NORTH-SEA
GEOPHYSICAL JOURNAL-OXFORD
1989; 97 (2): 247–58
View details for DOI 10.1111/j.1365-246X.1989.tb00499.x
View details for Web of Science ID A1989U623000005
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DEEP SEISMIC-REFLECTION PROFILING AND THE GROWTH OF THE CONTINENTAL-CRUST
TECTONOPHYSICS
1989; 161 (3-4): 233–44
View details for DOI 10.1016/0040-1951(89)90156-X
View details for Web of Science ID A1989U458700007
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LOWER-CRUSTAL POROSITY FROM ELECTRICAL MEASUREMENTS AND INFERENCES ABOUT COMPOSITION FROM SEISMIC VELOCITIES
GEOPHYSICAL RESEARCH LETTERS
1989; 16 (3): 255–58
View details for DOI 10.1029/GL016i003p00255
View details for Web of Science ID A1989T627700010
- Deep seismic reflection profiling and the growth of the continental crust Tectonophysics 1989; 161: 233-244
- Processing BIRPS deep seismic reflection data; a tutorial review Digital seismology and fine modeling of the lithosphere edited by Cassinis, R., Nolet, G., Panza, G. F. 1989: 229–257
- A comparison of the Moho interpreted from gravity data and from deep seismic reflection data in the northern North Sea Geophysical Journal International 1989; 97: 247-258
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THE DEEP-STRUCTURE OF NORTHERN ENGLAND AND THE IAPETUS SUTURE ZONE FROM BIRPS DEEP SEISMIC-REFLECTION PROFILES
JOURNAL OF THE GEOLOGICAL SOCIETY
1988; 145: 727-?
View details for Web of Science ID A1988P899500001
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CRUSTAL THINNING AND NATURE OF EXTENSION IN THE NORTHERN NORTH-SEA FROM DEEP SEISMIC-REFLECTION PROFILING
TECTONICS
1988; 7 (4): 803–21
View details for DOI 10.1029/TC007i004p00803
View details for Web of Science ID A1988P704700007
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SOUND-WAVES REFLECT BRITAINS DEEP GEOLOGY
NEW SCIENTIST
1988; 117 (1598): 73-&
View details for Web of Science ID A1988M296000024
- The deep structure of northern England and the Iapetus suture zone from BIRPS deep seismic reflection profiles Journal of the Geological Society of London 1988; 145: 727-740
- Iapetus suture located beneath the North Sea by BIRPS deep seismic reflection profiling Geology 1988; 15: 195-198
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A COMPARISON OF REFLECTION AND REFRACTION PROCESSING AND INTERPRETATION METHODS APPLIED TO CONVENTIONAL REFRACTION DATA FROM COASTAL MAINE
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
1987; 77 (2): 614-630
View details for Web of Science ID A1987G560400017
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REFLECTIVITY OF THE CRYSTALLINE CRUST - HYPOTHESES AND TESTS
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY
1987; 89 (1): 217–22
View details for DOI 10.1111/j.1365-246X.1987.tb04411.x
View details for Web of Science ID A1987G760000035
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WIDE-ANGLE DEEP CRUSTAL REFLECTIONS IN THE NORTHERN APPALACHIANS
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY
1987; 89 (1): 183-188
View details for Web of Science ID A1987G760000030
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COCORP - NEW PERSPECTIVES ON THE DEEP CRUST
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY
1987; 89 (1): 47-53
View details for Web of Science ID A1987G760000010
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SOME UNSOLVED BIRPS PROBLEMS
GEOPHYSICAL JOURNAL OF THE ROYAL ASTRONOMICAL SOCIETY
1987; 89 (1): 209-215
View details for Web of Science ID A1987G760000034
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CRUSTAL STRUCTURE OF WESTERN NEVADA FROM COCORP DEEP SEISMIC-REFLECTION DATA
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
1987; 98 (3): 320-329
View details for Web of Science ID A1987G305200007
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IAPETUS SUTURE LOCATED BENEATH THE NORTH-SEA BY BIRPS DEEP SEISMIC-REFLECTION PROFILING
GEOLOGY
1987; 15 (3): 195-198
View details for Web of Science ID A1987G377900001
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OVERVIEW OF THE COCORP 40-DEGREES-N TRANSECT, WESTERN UNITED-STATES - THE FABRIC OF AN OROGENIC BELT
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
1987; 98 (3): 308-319
View details for Web of Science ID A1987G305200006
- Overview of the COCORP 40N Transect, wester United States: The fabric of an orogenic belt Geological Society of America Bulletin 1987; 98: 308-319
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A RELATION BETWEEN CONTINENTAL HEAT-FLOW AND THE SEISMIC REFLECTIVITY OF THE LOWER CRUST
JOURNAL OF GEOPHYSICS-ZEITSCHRIFT FUR GEOPHYSIK
1987; 61 (1): 1–11
View details for Web of Science ID A1987H070700001
- Seismic noise-reduction techniques for use with vertical stacking; an empirical comparison Geophysics 1987; 52: 322-334
- Simulations of noise rejection and mantissa-only recording; an experiment in high-amplitude noise reduction with COCORP data Geophysics 1987; 50: 709-714
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THE MOHO IN THE NORTHERN BASIN AND RANGE PROVINCE, NEVADA, ALONG THE COCORP 40-DEGREE-N SEISMIC-REFLECTION TRANSECT
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
1986; 97 (5): 603-618
View details for Web of Science ID A1986C344000009
- The Moho in the northern Basin and Range Province, Nevada, along the COCORP 40°N seismic-reflection transect Geological Society of America Bulletin 1986; 97: 603-618
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SOME RESULTS OF COCORP SEISMIC-REFLECTION PROFILING IN THE GRENVILLE-AGE ADIRONDACK MOUNTAINS, NEW-YORK STATE
CANADIAN JOURNAL OF EARTH SCIENCES
1985; 22 (2): 141-153
View details for DOI 10.1139/e85-013
View details for Web of Science ID A1985ADW8300001
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CRUSTAL PROFILE OF MOUNTAIN BELT - COCORP DEEP SEISMIC-REFLECTION PROFILING IN NEW-ENGLAND APPALACHIANS AND IMPLICATIONS FOR ARCHITECTURE OF CONVERGENT MOUNTAIN CHAINS
AAPG BULLETIN-AMERICAN ASSOCIATION OF PETROLEUM GEOLOGISTS
1984; 68 (7): 819-837
View details for Web of Science ID A1984TC46400003
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ADIRONDACK-APPALACHIAN CRUSTAL STRUCTURE - THE COCORP NORTHEAST TRAVERSE
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
1983; 94 (10): 1173-1184
View details for Web of Science ID A1983RP48600007
- Adirondack-Appalachian crustal structure: The COCORP Northeast Traverse Geological Society of America Bulletin 1983; 94: 1173-1184