George Hilley
Professor of Earth and Planetary Sciences
Earth & Planetary Sciences
Administrative Appointments
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Postdoctoral Researcher, Universitaet Potsdam (2001 - 2002)
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Postdoctoral Research Fellow, Universitaet Potsdam (2002 - 2003)
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Postdoctoral Research Associate, University of California, Berkeley (2003 - 2004)
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Assistant Professor, Stanford University (2005 - 2011)
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Associate Professor, Stanford University (2011 - Present)
Honors & Awards
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Postdoctoral Research Fellow, Alexander von Humboldt Fellowship, Universitaet Potsdam (2001-2002)
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Terman Fellow, Stanford University (2006-present)
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Outstanding Reviewer Citation - JGR Earth Surface, American Geophysical Union (2006)
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School of Earth Sciences Award for Excellence in Teaching, Stanford University (2009)
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Walter J. Gores Award for Excellence in Teaching, Stanford University (2012)
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AGU Outstanding Reviewer Citation - Tectonics, American Geophysical Union (2013)
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AGU Outstanding Reviewer Citation - GRL, American Geophysical Union (2013)
Boards, Advisory Committees, Professional Organizations
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Associate Editor, Basin Research (2014 - Present)
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Associate Editor, Tectonics, American Geophysical Union (2014 - Present)
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Member, Vice Provost for Online Learning Advisory Board, Stanford University (2014 - Present)
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SES Teaching Task Force, School of Earth Sciences, Stanford University (2014 - Present)
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Distinguished Lecturer, School of Earth Sciences, Stanford University (2013 - 2014)
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Invited Speaker, University of California, Berkeley (2013 - 2013)
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Associate Editor, Lithosphere (2012 - Present)
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Member, Undergraduate Curriculum Committee, Stanford University (2010 - 2011)
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Lecturer, Intel International Science and Engineering Fair Stanford Orientation, Stanford University (2010 - 2010)
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Lecturer, New Student Orientation, Stanford University (2010 - 2010)
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de facto GES representative to proposed Hazards Initiative, Stanford University (2009 - 2011)
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Invited Keynote Speaker, Long-Range Science Goals for Geodesy Community Workshop (2009 - 2009)
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Invited Speaker, San Jose State University (2009 - 2009)
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Invited Speaker, United States Geological Survey, Menlo Park, CA (2009 - 2009)
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Invited Speaker, Penninsula Geological Society (2009 - 2009)
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Invited Keynote Speaker, Deformation Mechanisms, Rheology and Tectonics Meeting, Milano, Italy (2008 - 2008)
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Member, School of Earth Sciences Council, Stanford University (2008 - 2008)
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Invited Speaker, University of California, Santa Cruz (2007 - 2007)
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Member, Computational Seismology Search Committee, Department of Geophysics, Stanford University (2007 - 2007)
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Program Committee Member, Earthscope Annual National Meeting, National Science Foundation (2007 - 2007)
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Member, Graduate Student Admissions Committee, Stanford University (2006 - 2011)
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Member. Steering Committee, National Center for Airborne Laser Mapping (2005 - 2007)
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Invited Speaker, University of California, Los Angeles (2005 - 2005)
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Steering Committee Member, National Center for Airborne Laser Mapping (2004 - 2008)
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Invited Speaker, Department of Geological Sciences, University of Oregon (2004 - 2004)
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Invited Speaker, Department of Earth Sciences, University of Southern California (2004 - 2004)
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Invited Speaker, Berkeley Seismology Laboratory, University of California, Berkeley (2004 - 2004)
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Invited Speaker - Department of Geological and Environmental Sciences, Stanford University (2004 - 2004)
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Invited Speaker, Department of Geoscience,, University of Nevada, Las Vegas (2004 - 2004)
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Invited Speaker, Berkeley Seismology Laboratory, University of California, Berkeley (2003 - 2003)
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Invited Speaker, Department of Geology, University of California, Davis (2003 - 2003)
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Invited Speaker, Department of Earth and Atmospheric Sciences, Cornell University (2003 - 2003)
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Invited Speaker, International Quality Network (IQN) Paleoseismology Workshop, Potsdam, Germany (2002 - 2002)
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Invited Speaker, Geology Department Colloquium, University of South Florida (2002 - 2002)
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Invited Speaker, United States Geological Survey Earthquake Hazards Seminar (2001 - 2001)
Professional Education
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Ph.D., Arizona State University, Geology (2001)
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B.S., Stanford University, Geological and Environmental Sciences (1996)
Current Research and Scholarly Interests
Research
I study the landscape's response to active faulting and folding of the Earth's crust. My students and I use a wide range of tools to study these processes, such as geologic and geomorphic field studies, and numerical models of tectonic and erosional processes. My research spans a broad range of time and spatial scales, from the development of mountain ranges over millions of years through the development of small landforms and watersheds over 10s-100s of thousands of years. For example, at the scale of entire mountain belts, I study how deformation and erosion within the Andes may be coupled, providing a link between deep earth and atmospheric processes. At the other extreme, I study how active uplift along the San Andreas Fault affects the short-term development of small, ~4-km-long landforms. Finally, I have recently become interested in studying large, slow-moving landslides in urbanized areas (and the hazards they pose) using remote sensing methods such as Synthetic Aperture Radar Interferometry.
Teaching
I teach both graduate and undergraduate classes and seminars on the development of mountain belts in tectonically active areas. These courses use both classic field examples, as well as local field excursions in the Santa Cruz Mountains as guides to understanding how active faulting may produce steep topography.
Professional Activities
Terman Fellow, 2006-present; Steering Committee, National Center for Airborne Laser Mapping, 2005- present; Program Committee, NSF-Earthscope Annual Meeting; Alexander von Humboldt Fellow, 2001-02
2024-25 Courses
- Introduction to Field Methods
EPS 105, EPS 405 (Spr) - Moving and Shaking in the Bay Area
EPS 42 (Aut) -
Independent Studies (15)
- Advanced Projects
EPS 399 (Aut, Win, Spr, Sum) - Directed Individual Study in Earth Systems
EARTHSYS 297 (Aut, Win, Spr, Sum) - Directed Reading with Earth & Planetary Sciences Faculty
EPS 292 (Aut, Win) - Directed Research
EARTHSYS 250 (Aut, Win, Spr, Sum) - Field Research
EPS 299 (Aut, Win, Spr, Sum) - Graduate Research
EPS 400 (Aut, Win, Spr, Sum) - Graduate Teaching Experience in Geological Sciences
EPS 386 (Aut, Win, Spr, Sum) - Honors Program
EPS 199 (Aut, Win) - Honors Program in Earth Systems
EARTHSYS 199 (Aut, Win, Spr, Sum) - Practical Experience in the Geosciences
EPS 385 (Aut, Win, Spr, Sum) - Research in the Field
EPS 190 (Aut, Win, Sum) - Scientific Knowledge Applied to Real-World Challenges
EPS 193 (Aut, Win, Spr, Sum) - Senior Thesis
EPS 197 (Aut, Win) - Teaching in Geological Sciences
EPS 398 (Aut, Win, Spr, Sum) - Undergraduate Research in Earth & Planetary Sciences
EPS 192 (Aut, Win)
- Advanced Projects
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Prior Year Courses
2023-24 Courses
- Earth and Planetary Processes and Mechanics
EPS 217, EPS 3 (Win) - Fundamentals of Structural Geology
EPS 111 (Win) - Introduction to Field Methods
EPS 105, EPS 405 (Spr)
2022-23 Courses
- Earth and Planetary Processes and Mechanics
GEOLSCI 217, GEOLSCI 3 (Win) - Moving and Shaking in the Bay Area
GEOLSCI 42 (Aut)
2021-22 Courses
- Earth and Planetary Processes and Mechanics
GEOLSCI 3 (Win) - Moving and Shaking in the Bay Area
EARTH 42, GEOLSCI 42 (Aut) - Moving and Shaking in the Bay Area
GEOLSCI 42B (Spr)
- Earth and Planetary Processes and Mechanics
All Publications
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Climatic and lithological controls on the structure and thickness of granitic weathering zones
EARTH AND PLANETARY SCIENCE LETTERS
2022; 600
View details for DOI 10.1016/j.epsl.2022.117890
View details for Web of Science ID 000933515500003
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Mountain Rivers Reveal the Earthquake Hazard of Geologic Faults in Silicon Valley
GEOPHYSICAL RESEARCH LETTERS
2022; 49 (19)
View details for DOI 10.1029/2022GL099220
View details for Web of Science ID 000865967400001
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Seasonal and Multiyear Changes in CO2 Degassing at Mammoth Mountain Explained by Solid-Earth-Driven Fault Valving
GEOPHYSICAL RESEARCH LETTERS
2022; 49 (6)
View details for DOI 10.1029/2021GL096595
View details for Web of Science ID 000775611400001
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Bridging earthquakes and mountain building in the Santa Cruz Mountains, CA.
Science advances
2022; 8 (8): eabi6031
Abstract
Relative crustal motions along active faults generate earthquakes, and repeated earthquake cycles build mountain ranges over millions of years. However, the long-term summation of elastic, earthquake-related deformation cannot produce the deformation recorded within the rock record. Here, we provide an explanation for this discrepancy by showing that increases in strain facilitated by plastic deformation of Earth's crust during the earthquake cycle, in conjunction with isostatic deflection and erosion, transform relative fault motions that produce individual earthquakes to geologic deformations. We focus our study on the data-rich Santa Cruz Mountains, CA, USA and compare predicted and observed quantities for rock uplift, apatite (U-Th)/He thermochronology, topographic relief, 10Be-based erosion rates, and interseismic surface velocities. This approach reconciles these disparate records of mountain-building processes, allowing us to explicitly bridge decadal measures of deformation with that produced by millions of years of plate motion.
View details for DOI 10.1126/sciadv.abi6031
View details for PubMedID 35213228
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Are submarine and subaerial drainages morphologically distinct?
GEOLOGY
2019; 47 (11): 1093–97
View details for DOI 10.1130/G46329.1
View details for Web of Science ID 000491287900018
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Earth's topographic relief potentially limited by an upper bound on channel steepness
NATURE GEOSCIENCE
2019; 12 (10): 828-+
View details for DOI 10.1038/s41561-019-0442-3
View details for Web of Science ID 000488223800011
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Regional‐scale detection of fault scarps and other tectonic landforms: Examples from Northern California
Journal of Geophysical Research: Solid Earth
2019; 124
View details for DOI 10.1029/2018JB016886
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Millennial-scale denudation rates of the Santa Lucia Mountains, California: Implications for landscape evolution in steep, high-relief, coastal mountain ranges
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2018; 130 (11-12): 1809–24
View details for DOI 10.1130/B31907.1
View details for Web of Science ID 000449028300004
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Adding a community partner to service learning may elevate learning but not necessarily service
INTERNATIONAL JOURNAL OF DISASTER RISK REDUCTION
2018; 28: 80–87
View details for DOI 10.1016/j.ijdrr.2018.02.011
View details for Web of Science ID 000430284000008
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Weak bedrock allows north-south elongation of channels in semi-arid landscapes
EARTH AND PLANETARY SCIENCE LETTERS
2017; 478: 150–58
View details for DOI 10.1016/j.epsl.2017.08.037
View details for Web of Science ID 000413380200016
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Geomorphology, denudation rates, and stream channel profiles reveal patterns of mountain building adjacent to the San Andreas fault in northern California, USA
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2017; 129 (5-6): 732–49
View details for DOI 10.1130/B31551.1
View details for Web of Science ID 000403309300013
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Encouraging Earthquake-Resistant Construction: A Randomized Controlled Trial in Nepal
EARTHQUAKE SPECTRA
2016; 32 (4): 1975-1988
View details for DOI 10.1193/102015EQS156M
View details for Web of Science ID 000388626400002
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Benchmarking analogue models of brittle thrust wedges
JOURNAL OF STRUCTURAL GEOLOGY
2016; 92: 116-139
View details for DOI 10.1016/j.jsg.2016.03.005
View details for Web of Science ID 000387196000008
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Rate-weakening friction characterizes both slow sliding and catastrophic failure of landslides
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
2016; 113 (37): 10281-10286
Abstract
Catastrophic landslides cause billions of dollars in damages and claim thousands of lives annually, whereas slow-moving landslides with negligible inertia dominate sediment transport on many weathered hillslopes. Surprisingly, both failure modes are displayed by nearby landslides (and individual landslides in different years) subjected to almost identical environmental conditions. Such observations have motivated the search for mechanisms that can cause slow-moving landslides to transition via runaway acceleration to catastrophic failure. A similarly diverse range of sliding behavior, including earthquakes and slow-slip events, occurs along tectonic faults. Our understanding of these phenomena has benefitted from mechanical treatments that rely upon key ingredients that are notably absent from previous landslide descriptions. Here, we describe landslide motion using a rate- and state-dependent frictional model that incorporates a nonlocal stress balance to account for the elastic response to gradients in slip. Our idealized, one-dimensional model reproduces both the displacement patterns observed in slow-moving landslides and the acceleration toward failure exhibited by catastrophic events. Catastrophic failure occurs only when the slip surface is characterized by rate-weakening friction and its lateral dimensions exceed a critical nucleation length [Formula: see text] that is shorter for higher effective stresses. However, landslides that are extensive enough to fall within this regime can nevertheless slide slowly for months or years before catastrophic failure. Our results suggest that the diversity of slip behavior observed during landslides can be described with a single model adapted from standard fault mechanics treatments.
View details for DOI 10.1073/pnas.1607009113
View details for Web of Science ID 000383092000034
View details for PubMedID 27573836
View details for PubMedCentralID PMC5027430
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High spatio-temporal resolution observations of crater lake temperatures at Kawah Ijen volcano, East Java, Indonesia
BULLETIN OF VOLCANOLOGY
2016; 78 (8)
View details for DOI 10.1007/s00445-016-1049-9
View details for Web of Science ID 000382015800001
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The chemical, mechanical, and hydrological evolution of weathering granitoid
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2016; 121 (8): 1410-1435
View details for DOI 10.1002/2016JF003822
View details for Web of Science ID 000384442100001
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A unified framework for modeling landscape evolution by discrete flows
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2016; 121 (5): 816-842
View details for DOI 10.1002/2015JF003693
View details for Web of Science ID 000382580100001
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Integrated thermal infrared imaging and structure-from-motion photogrammetry to map apparent temperature and radiant hydrothermal heat flux at Mammoth Mountain, CA, USA
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
2015; 303: 16-24
View details for DOI 10.1016/j.jvolgeores.2015.07.025
View details for Web of Science ID 000362608000003
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Simulating depth-averaged, one-dimensional turbidity current dynamics using natural topographies
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2015; 120 (8): 1485-1500
View details for DOI 10.1002/2015JF003638
View details for Web of Science ID 000363464000003
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Recent topographic evolution and erosion of the deglaciated Washington Cascades inferred from a stochastic landscape evolution model
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2015; 120 (5): 856-876
View details for DOI 10.1002/2014JF003387
View details for Web of Science ID 000356443500007
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Lithologic control on the form of soil-mantled hillslopes
GEOLOGY
2015; 43 (1): 83-86
View details for DOI 10.1130/G36052.1
View details for Web of Science ID 000352018600025
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Influence of attenuated lithosphere and sediment loading on flexure of the deep-water Magallanes retroarc foreland basin, Southern Andes
TECTONICS
2014; 33 (12): 2505-2525
View details for DOI 10.1002/2014TC003684
View details for Web of Science ID 000348713100011
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Multi-scale observations of the variability of magmatic CO2 emissions, Mammoth Mountain, CA, USA
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
2014; 284: 1-15
View details for DOI 10.1016/j.jvolgeores.2014.07.011
View details for Web of Science ID 000343361300001
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Symmetry, randomness, and process in the structure of branched channel networks
GEOPHYSICAL RESEARCH LETTERS
2014; 41 (10): 3485-3493
View details for DOI 10.1002/2014GL059816
View details for Web of Science ID 000337610200022
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Crustal migration of CO2-rich magmatic fluids recorded by tree-ring radiocarbon and seismicity at Mammoth Mountain, CA, USA
EARTH AND PLANETARY SCIENCE LETTERS
2014; 390: 52-58
View details for DOI 10.1016/j.epsl.2013.12.035
View details for Web of Science ID 000333998400006
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New estimates of silicate weathering rates and their uncertainties in global rivers
Geochimica et Cosmochimica Acta
2014
View details for DOI 10.1016/j.gca.2014.02.033
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Impact of flow routing on catchment area calculations, slope estimates, and numerical simulations of landscape development
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2013; 118 (4): 2105-2123
View details for DOI 10.1002/jgrf.20127
View details for Web of Science ID 000329873500007
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Depth and character of rock weathering across a basaltic- hosted climosequence on Hawaii
INTERNATIONAL JOURNAL OF CIRCUIT THEORY AND APPLICATIONS
2013; 41 (11): 381-398
View details for DOI 10.1002/esp.3505
View details for Web of Science ID 000333483000008
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Hillslopes Record the Growth and Decay of Landscapes
SCIENCE
2013; 341 (6148): 868-871
Abstract
Earth's surface archives the combined history of tectonics and erosion, which tend to roughen landscapes, and sediment transport and deposition, which smooth them. We analyzed hillslope morphology in the tectonically active Dragon's Back Pressure Ridge in California, United States, to assess whether tectonic uplift history can be reconstructed using measurable attributes of hillslope features within landscapes. Hilltop curvature and hillslope relief mirror measured rates of vertical displacement caused by tectonic forcing, and their relationships are consistent with those expected when idealizing hillslope transport as a nonlinear diffusion process. Hilltop curvature lags behind relief in its response to changing erosion rates, allowing growing landscapes to be distinguished from decaying landscapes. Numerical modeling demonstrates that hillslope morphology may be used to infer changes in tectonic rates.
View details for DOI 10.1126/science.1241791
View details for Web of Science ID 000323370600037
View details for PubMedID 23970695
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Restraining bend tectonics in the Santa Cruz Mountains, California, imaged using Be-10 concentrations in river sands
GEOLOGY
2013; 41 (8): 843-846
View details for DOI 10.1130/G33970.1
View details for Web of Science ID 000323274600007
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Geologic CO2 input into groundwater and the atmosphere, Soda Springs, ID, USA
CHEMICAL GEOLOGY
2013; 339: 61-70
View details for DOI 10.1016/j.chemgeo.2012.06.013
View details for Web of Science ID 000316423200007
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Multitemporal ALSM change detection, sediment delivery, and process mapping at an active earthflow
EARTH SURFACE PROCESSES AND LANDFORMS
2012; 37 (3): 262-272
View details for DOI 10.1002/esp.2234
View details for Web of Science ID 000300838600002
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Eddy covariance network design for mapping and quantification of surface CO2 leakage fluxes
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
2012; 7: 137-144
View details for DOI 10.1016/j.ijggc.2012.01.010
View details for Web of Science ID 000303290200015
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The sensitivity of turbidity currents to mass and momentum exchanges between these underflows and their surroundings
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
2012; 117
View details for DOI 10.1029/2011JF001990
View details for Web of Science ID 000299704000001
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Eddy covariance imaging of diffuse volcanic CO2 emissions at Mammoth Mountain, CA, USA
BULLETIN OF VOLCANOLOGY
2012; 74 (1): 135-141
View details for DOI 10.1007/s00445-011-0503-y
View details for Web of Science ID 000298993400010
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Structural, geomorphic, and depositional characteristics of contiguous and broken foreland basins: examples from the eastern flanks of the central Andes in Bolivia and NW Argentina
TECTONICS OF SEDIMENTARY BASINS: RECENT ADVANCES
2012: 508–21
View details for Web of Science ID 000336999700026
- Structural, geomorphic, and depositional characteristics of contiguous and broken foreland basins: examples from the eastern flanks of the central Andes in Bolivia and NW Argentina Recent Advances in Tectonics of Sedimentary Basins edited by Busby, C., Azor, A. Wiley-Blackwell. 2012
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Terrestrial source to deep-sea sink sediment budgets at high and low sea levels: Insights from tectonically active Southern California
GEOLOGY
2011; 39 (7): 619-622
View details for DOI 10.1130/G31801.1
View details for Web of Science ID 000291729600003
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Climatic control of denudation in the deglaciated landscape of the Washington Cascades
NATURE GEOSCIENCE
2011; 4 (7): 469-473
View details for DOI 10.1038/NGEO1159
View details for Web of Science ID 000292241900020
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Vadose zone controls on weathering intensity and depth: Observations from grussic saprolites
APPLIED GEOCHEMISTRY
2011; 26: S36-S39
View details for DOI 10.1016/j.apgeochem.2011.03.023
View details for Web of Science ID 000297788100011
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Erosional control of the kinematics of the Aconcagua fold-and-thrust belt from numerical simulations and physical experiments
GEOLOGY
2011; 39 (5): 439-442
View details for DOI 10.1130/G31675.1
View details for Web of Science ID 000289416500012
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Constraints on the late Quaternary glaciations in Tibet from cosmogenic exposure ages of moraine surfaces
QUATERNARY SCIENCE REVIEWS
2011; 30 (5-6): 528-554
View details for DOI 10.1016/j.quascirev.2010.11.005
View details for Web of Science ID 000288840000004
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Linking chronosequences with the rest of the world: predicting soil phosphorus content in denuding landscapes
BIOGEOCHEMISTRY
2011; 102 (1-3): 153-166
View details for DOI 10.1007/s10533-010-9428-3
View details for Web of Science ID 000285359000010
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Links between topography, erosion, rheological heterogeneity, and deformation in contractional settings: Insights from the central Andes
TECTONOPHYSICS
2010; 495 (1-2): 78-92
View details for DOI 10.1016/j.tecto.2009.06.017
View details for Web of Science ID 000286411500007
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Erosional control of the kinematics and geometry of fold-and-thrust belts imaged in a physical and numerical sandbox
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2010; 115
View details for DOI 10.1029/2010JB007472
View details for Web of Science ID 000282015500003
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Fault zone structure from topography: Signatures of en echelon fault slip at Mustang Ridge on the San Andreas Fault, Monterey County, California
TECTONICS
2010; 29
View details for DOI 10.1029/2010TC002673
View details for Web of Science ID 000281634300002
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Erosion, Geological History, and Indigenous Agriculture: A Tale of Two Valleys
ECOSYSTEMS
2010; 13 (5): 782-793
View details for DOI 10.1007/s10021-010-9354-1
View details for Web of Science ID 000280260100012
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A TEST OF INITIATION OF SUBMARINE LEVEED CHANNELS BY DEPOSITION ALONE
JOURNAL OF SEDIMENTARY RESEARCH
2010; 80 (7-8): 710-727
View details for DOI 10.2110/jsr.2010.067
View details for Web of Science ID 000280725900008
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Competition between erosion and reaction kinetics in controlling silicate-weathering rates
EARTH AND PLANETARY SCIENCE LETTERS
2010; 293 (1-2): 191-199
View details for DOI 10.1016/j.epsl.2010.01.008
View details for Web of Science ID 000277217100020
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Dynamics of CO2 fluxes and concentrations during a shallow subsurface CO2 release
ENVIRONMENTAL EARTH SCIENCES
2010; 60 (2): 285-297
View details for DOI 10.1007/s12665-009-0396-7
View details for Web of Science ID 000276637000007
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Morphologic dating of fault scarps using airborne laser swath mapping (ALSM) data
GEOPHYSICAL RESEARCH LETTERS
2010; 37
View details for DOI 10.1029/2009GL042044
View details for Web of Science ID 000274788500002
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Structural geometry of Raplee Ridge monocline and thrust fault imaged using inverse Boundary Element Modeling and ALSM data
JOURNAL OF STRUCTURAL GEOLOGY
2010; 32 (1): 45-58
View details for DOI 10.1016/j.jsg.2009.06.015
View details for Web of Science ID 000274840800005
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Eddy covariance mapping and quantification of surface CO2 leakage fluxes
GEOPHYSICAL RESEARCH LETTERS
2009; 36
View details for DOI 10.1029/2009GL040775
View details for Web of Science ID 000271579400007
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Does the topographic distribution of the central Andean Puna Plateau result from climatic or geodynamic processes?
GEOLOGY
2009; 37 (7): 643-646
View details for DOI 10.1130/G25545A.1
View details for Web of Science ID 000267390100016
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Eddy covariance observations of surface leakage during shallow subsurface CO2 releases
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
2009; 114
View details for DOI 10.1029/2008JD011297
View details for Web of Science ID 000267187200005
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Earthquake-cycle deformation and fault slip rates in northern Tibet
GEOLOGY
2009; 37 (1): 31-34
View details for DOI 10.1130/G25157A.1
View details for Web of Science ID 000262428200008
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Detection of CO2 leakage by eddy covariance during the ZERT project's CO2 release experiments
9th International Conference on Greenhouse Gas Control Technologies
ELSEVIER SCIENCE BV. 2009: 2301–6
View details for DOI 10.1016/j.egypro.2009.01.299
View details for Web of Science ID 000276074402044
- Does the topographic distribution of the central Andean Plateau result from climatic or geodynamic processes? Geology 2009; 37: 643-646
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A framework for predicting global silicate weathering and CO2 drawdown rates over geologic time-scales
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
2008; 105 (44): 16855-16859
Abstract
Global silicate weathering drives long-time-scale fluctuations in atmospheric CO(2). While tectonics, climate, and rock-type influence silicate weathering, it is unclear how these factors combine to drive global rates. Here, we explore whether local erosion rates, GCM-derived dust fluxes, temperature, and water balance can capture global variation in silicate weathering. Our spatially explicit approach predicts 1.9-4.6 x 10(13) mols of Si weathered globally per year, within a factor of 4-10 of estimates of global silicate fluxes derived from riverine measurements. Similarly, our watershed-based estimates are within a factor of 4-18 (mean of 5.3) of the silica fluxes measured in the world's ten largest rivers. Eighty percent of total global silicate weathering product traveling as dissolved load occurs within a narrow range (0.01-0.5 mm/year) of erosion rates. Assuming each mol of Mg or Ca reacts with 1 mol of CO(2), 1.5-3.3 x 10(8) tons/year of CO(2) is consumed by silicate weathering, consistent with previously published estimates. Approximately 50% of this drawdown occurs in the world's active mountain belts, emphasizing the importance of tectonic regulation of global climate over geologic timescales.
View details for DOI 10.1073/pnas.0801462105
View details for Web of Science ID 000260913800013
View details for PubMedID 18952842
View details for PubMedCentralID PMC2572559
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Geomorphic response to uplift along the Dragon's Back pressure ridge, Carrizo Plain, California
GEOLOGY
2008; 36 (5): 367-370
View details for DOI 10.1130/G24517A.1
View details for Web of Science ID 000255853300008
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Six-week time series of eddy covariance CO2 flux at Mammoth Mountain, California: Performance evaluation and role of meteorological forcing
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
2008; 171 (3-4): 178-190
View details for DOI 10.1016/j.jvolgeores.2007.11.029
View details for Web of Science ID 000255801500002
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Deducing paleoearthquake timing and recurrence from paleoseismic data, part II: Analysis of paleoseismic excavation data and earthquake behavior along the central and southern San Andreas fault
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
2008; 98 (1): 407-439
View details for DOI 10.1785/0120070012
View details for Web of Science ID 000253494200026
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Deducing paleoearthquake timing and recurrence from paleoseismic data, part 1: Evaluation of new Bayesian Markov-Chain Monte Carlo simulation methods applied to excavations with continuous peat growth
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
2008; 98 (1): 383-406
View details for DOI 10.1785/0120020077
View details for Web of Science ID 000253494200025
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The relationship between tectonic uplift and chemical weathering rates in the Washington cascades: Field measurements and model predictions
AMERICAN JOURNAL OF SCIENCE
2007; 307 (9): 1041-1063
View details for DOI 10.2475/09.2007.01
View details for Web of Science ID 000253135700001
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Inferring fault characteristics using fold geometry constrained by airborne laser swath mapping at Raplee Ridge, Utah
GEOPHYSICAL RESEARCH LETTERS
2007; 34 (16)
View details for DOI 10.1029/2007GL030548
View details for Web of Science ID 000249334500004
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Influence of lithosphere viscosity structure on estimates of fault slip rate in the Mojave region of the San Andreas fault system
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2007; 112 (B7)
View details for DOI 10.1029/2006JB004842
View details for Web of Science ID 000248288500004
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Chemical weathering, mass loss, and dust inputs across a climate by time matrix in the Hawaiian Islands
EARTH AND PLANETARY SCIENCE LETTERS
2007; 258 (3-4): 414-427
View details for DOI 10.1016/j.epsl.2007.03.047
View details for Web of Science ID 000248057900004
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Major ion chemistry of the Yarlung Tsangpo-Brahmaputra river: Chemical weathering, erosion, and CO2 consumption in the southern Tibetan plateau and eastern syntaxis of the Himalaya
GEOCHIMICA ET COSMOCHIMICA ACTA
2007; 71 (12): 2907-2935
View details for DOI 10.1016/j.gca.2007.03.021
View details for Web of Science ID 000247216400001
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Dynamic coupling of volcanic CO2 flow and wind at the Horseshoe Lake tree kill, Mammoth Mountain, California
GEOPHYSICAL RESEARCH LETTERS
2007; 34 (3)
View details for DOI 10.1029/2006GL028848
View details for Web of Science ID 000244041000004
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Uplift, erosion, and phosphorus limitation in terrestrial ecosystems
ECOSYSTEMS
2007; 10 (1): 158-170
View details for DOI 10.1007/s10021-006-9011-x
View details for Web of Science ID 000246766000014
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Tectonics and climate of the southern central Andes
ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES
2007; 35: 747-787
View details for DOI 10.1146/annurev.earth.35.031306.140158
View details for Web of Science ID 000247012500024
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Resolving vertical tectonics in the San Francisco Bay Area from permanent scatterer InSAR and GPS analysis
GEOLOGY
2006; 34 (3): 221-224
View details for DOI 10.1130/G22064.1
View details for Web of Science ID 000235959300025
- Tectonics, climate, and landscape evolution of the southern Central Andes: The Argentine Puna Plateau and adjacent Regions between 22 and 28°S lat, in The Andes—Active Subduction Orogeny Frontiers in Earth Sciences edited by Oncken, O., Chong, G., Franz, G., Giese, P., Götze, et al. Springer Verlag, Berlin. 2006: 265—283
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Tectonics, Climate, and Landscape Evolution of the Southern Central Andes: the Argentine Puna Plateau and Adjacent Regions between 22 and 30 degrees S
ANDES: ACTIVE SUBDUCTION OROGENY
2006: 265–83
View details for DOI 10.1007/978-3-540-48684-8_12
View details for Web of Science ID 000268287800012
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Mechanics and erosion of basement-cored uplift provinces
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2005; 110 (B12)
View details for DOI 10.1029/2005JB003704
View details for Web of Science ID 000234507000001
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An improved strategy to detect CO2 leakage for verification of geologic carbon sequestration
GEOPHYSICAL RESEARCH LETTERS
2005; 32 (19)
View details for DOI 10.1029/2005GL024281
View details for Web of Science ID 000232686100008
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Processes of oscillatory basin filling and excavation in a tectonically active orogen: Quebrada del Toro Basin, NW Argentina (vol 117, pg 887, 2005)
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2005; 117 (9-10): 1367-1367
View details for DOI 10.1130/B25602.1
View details for Web of Science ID 000231587300016
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Oligocene range uplift and development of plateau morphology in the southern central Andes
TECTONICS
2005; 24 (4)
View details for DOI 10.1029/2004TC001762
View details for Web of Science ID 000231384600002
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Interseismic coupling and asperity distribution along the Kamchatka subduction zone
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2005; 110 (B7)
View details for DOI 10.1029/2005JB003648
View details for Web of Science ID 000230919600001
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Processes of oscillatory basin filling and excavation in a tectonically active orogen: Quebrada del Toro Basin, NW Argentina
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2005; 117 (7-8): 887-901
View details for DOI 10.1130/1325602.1
View details for Web of Science ID 000229991100005
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Bayesian inference of plastosphere viscosities near the Kunlun Fault, northern Tibet
GEOPHYSICAL RESEARCH LETTERS
2005; 32 (1)
View details for DOI 10.1029/2004GL021658
View details for Web of Science ID 000226510500005
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Dynamics of slow-moving landslides from permanent scatterer analysis
SCIENCE
2004; 304 (5679): 1952-1955
Abstract
High-resolution interferometric synthetic aperture radar (InSAR) permanent scatterer data allow us to resolve the rates and variations in the rates of slow-moving landslides. Satellite-to-ground distances (range changes) on landslides increase at rates of 5 to 7 millimeters per year, indicating average downslope sliding velocities from 27 to 38 millimeters per year. Time-series analysis shows that displacement occurs mainly during the high-precipitation season; during the 1997-1998 El Niño event, rates of range change increased to as much as 11 millimeters per year. The observed nonlinear relationship of creep and precipitation rates suggests that increased pore fluid pressures within the shallow subsurface may initiate and accelerate these features. Changes in the slope of a hill resulting from increases in the pore pressure and lithostatic stress gradients may then lead to landslides.
View details for Web of Science ID 000222241600042
View details for PubMedID 15218146
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Growth and erosion of fold-and-thrust belts with an application to the Aconcagua fold-and-thrust belt, Argentina
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2004; 109 (B1)
View details for DOI 10.1029/2002JB002282
View details for Web of Science ID 000188673200001
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Steady state erosion of critical Coulomb wedges with applications to Taiwan and the Himalaya
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2004; 109 (B1)
View details for DOI 10.1029/2002JB002284
View details for Web of Science ID 000188673200002
- The scaling relationship between self-potential and fluid flow on Masaya volcano, Nicaragua Water-Rock Interaction: Proceedings of the Eleventh International Symposium edited by Wanty, R. B., Seal, R. R. Taylor and Francis, London. 2004: 153—156
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Formation of internally drained contractional basins by aridity-limited bedrock incision
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2003; 108 (B7)
View details for DOI 10.1029/2002JB001883
View details for Web of Science ID 000184697000002
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Shallow soil CO2 flow along the San Andreas and Calaveras Faults, California
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
2003; 108 (B4)
View details for DOI 10.1029/2002JB002141
View details for Web of Science ID 000182243500001
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Differential structural and geomorphic mountain-front evolution in an active continental collision zone: The northwest Pamir, southern Kyrgyzstan
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
2003; 115 (2): 166-181
View details for Web of Science ID 000180898100003
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Late Cenozoic tectonic development of the intramontane Alai Valley, (Pamir-Tien Shan region, central Asia): An example of intracontinental deformation due to the Indo-Eurasia collision
TECTONICS
2002; 21 (6)
View details for DOI 10.1029/2002TC001358
View details for Web of Science ID 000180643600003
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Average Pleistocene climatic patterns in the southern central Andes: Controls on mountain glaciation and paleoclimate implications
JOURNAL OF GEOLOGY
2002; 110 (2): 211-226
View details for Web of Science ID 000173673600006
- Initial breaching and evolution of an extensional monocline by a propagating normal fault, Baja California Sur, Mexico Journal of Structural Geology 2002; 24: 651-669
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Interaction between normal faults and fractures and fault scarp morphology
GEOPHYSICAL RESEARCH LETTERS
2001; 28 (19): 3777-3780
View details for Web of Science ID 000171217300039
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Inferring segment strength contrasts and boundaries along low-friction faults using surface offset data, with an example from the Cholame-Carrizo segment boundary along the San Andreas Fault, southern California
BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA
2001; 91 (3): 427-440
View details for Web of Science ID 000169543100002