School of Earth, Energy and Environmental Sciences
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Allegra Hosford Scheirer
Physical Sci Res Scientist
Current Research and Scholarly InterestsResearch
Allegra Hosford Scheirer is a research geophysicist at Stanford University, specializing in basin and petroleum system modeling. Her work is centered on the strong belief in the integration of geological, geochemical, and geophysical data in a unified working environment.
She co-teaches courses and co-advises several graduate students with a focus on basin and petroleum system modeling and investigative methods for exploring conventional and unconventional hydrocarbons.
Prior to joining Stanford, Allegra was a member of the Geophysical Unit of Menlo Park and the Energy Resources Program at the U.S. Geological Survey, where she constructed three-dimensional geologic models for use in the resource assessment process. Allegra has led and participated in numerous field programs at sea and in the United States. She is the editor of U.S.G.S. Professional Paper 1713 and a past Associate Editor of Journal of Geophysical Research.
Assistant Professor of Geophysics and, by courtesy, of Electrical Engineering
BioMy research focuses on advancing the scientific and technical foundations of geophysical ice penetrating radar and its use in observing and understanding the interaction of ice and water in the solar system. I am primarily interested in the subglacial and englacial conditions of rapidly changing ice sheets and their contribution to global sea level rise. However, a growing secondary focus of my work is the subsurface exploration of icy moons. I am also interested in the development and application of science-optimized geophysical radar systems. I consider myself an instrument scientist and strive to approach problems from both an earth systems science and a radar systems engineering perspective. I am actively engaged with the flow of information through each step of the observational science process; from instrument and experiment design, through data processing and analysis, to modeling and inference. This allows me to draw from a multidisciplinary set of tools to test system-scale and process-level hypotheses. For me, this deliberate integration of science and engineering is the most powerful and satisfying way to approach questions in Earth and planetary science
Ph.D. Student in Geophysics
Current Research and Scholarly InterestsI am interested in better understanding the geological, tectonic, and hydrological controls on induced earthquakes. Specifically, in using observational seismology techniques to infer these characteristics. In addition to this, I am also interested in describing practical regulatory frameworks to manage induced seismicity. My prior focus has emphasized earthquakes related to hydraulic fracturing, but will include other anthropogenic causes such as wastewater disposal.
Professor of Geophysics
Current Research and Scholarly InterestsResearch
I study active earthquake and volcanic process through data collection, inversion, and theoretical modeling. Using methods such as precise Global Positioning System (GPS) positioning and Interferometric Synthetic Aperture Radar (InSAR) we are able to measure deformation in space and time and invert these data for the geometry of faults and magma chambers, and spatiotemporal variations in fault slip-rate and magma chamber dilation. The accumulation of shear strain in tectonic regions provides a direct measure of earthquake potential. Similarly, magma accumulation in the crust prior to eruptions causes measurable inflation. We use these data to develop and test models of active plate boundaries such as the San Andreas, and the Cascade and Japanese subduction zones, the nucleation of earthquakes, slow slip events, induced seismicity, and the physics of magma migration leading to volcanic eruptions. These physics-based models rely on principles and methodologies from solid and fluid dynamics.
I teach introductory undergraduate classes in natural hazards and the prediction of volcanic eruptions, as well as graduate level courses on modeling earthquake and volcano deformation and geophysical inverse theory.
James B. Macelwane Medal, American Geophysical Union (1990); fellow, American Geophysical Union (1990); fellow, Geological Society of America (1997); president, Tectonophysics Section, AGU (2002-04); U.S.G.S. Science of Earthquakes Advisory Committee (2002-06); California Earthquake Prediction Evaluation Committee (2003-07); chair, Plate Boundary Observatory Steering Committee (2003-06); N.S.F. Panel, Instruments and Facilities Program (1997-2000); associate editor, Journal of Geophysical Research (1984-87). William Smith Lecturer, Geological Society of London (2011). Charles A. Whitten Medal, American Geophysical Union (2014), National Academy of Sciences (2016)
Ph.D. Student in Environment and Resources
Current Research and Scholarly InterestsSamy researches how to estimate public opinion at state and local levels, so that public opinion data is more relevant for policymakers. She also studies how people form their attitudes toward climate change and how those attitudes shape behavior.
Administrative Associate 3, Department of Geophysics - Geophysics
Current Role at StanfordAdministrative Assistant to Prof. Mark Zoback and Natural Gas Initiative (NGI) & Stanford Center for Induced and Triggered Seismicity (SCITS) Affiliate Programs