Title: Geodynamic Models Reveal Coupling Between Surface Tectonics And Mantle Dynamics At Regional And Global Scales
Abstract: The coupling between tectonic plates and the mantle, and the forces driving surface tectonics, remain key questions in geoscience. Because direct mantle observations are limited, numerical models that link deep-mantle flow to surface deformation are essential. These models require constraints from seismology, geodesy, and petrology to infer Earth’s physical properties and tectonic behavior.
In my work, I develop high-resolution forward models of both an intraplate seismic zone—the Central and Eastern United States—and the Earth’s mantle to represent their present-day physical states. I integrate constraints from multiple disciplines (e.g., geodesy, seismology, mineralogy) to capture complexity across vastly different length scales. To build these models, I contribute to the community software ASPECT and test various hypotheses by validating model results against observations.
These models advance our understanding of the mechanisms driving earthquake generation in intraplate seismic zones and of mantle flow, providing key insights into plate-boundary dynamics and surface processes.
Biography: I am a geophysicist interested in investigating the coupling between deeper mantle flow and observed surface tectonics. For my research, I develop global and regional-scale numerical models that combine available geophysical constraints.
I am also interested in community engagement and scientific visualization. Currently, I am developing educational modules describing complex Geodynamic concepts using community software for the scientific community.
To join virtually: Zoom
Contact: ahsaxena@ucdavis.edu
Website: https://alarshi.github.io/
Recording: Zoom Recording (will be available within a week after the seminar)