A School of Earth and Atmospheric Sciences Presents Dr. Eric O. Lindsey, Nanyang Technical University
Portrait of an Earthquake: Geodetic Perspectives on the Physics of Faulting in the Himalaya
Following the 2015 Nepal earthquake, I provided the first high-resolution, wide-swath synthetic aperture radar image of the resulting ground deformation to the geophysics community. These data reveal clearly where the fault slipped, and by integrating them with 3D structural models, we show that the earthquake was bounded on all sides by sharp bends or ramps along the fault.
Combining these results with long-term GPS observations of ground motion, I demonstrate how the fault structure controls both the long- and short-term behavior of the megathrust throughout the Himalaya, and in turn, how fault friction interacts to control the fault structure over time.
In the future, developing a better understanding of the interaction between the structure and behavior of faults will require input from a diverse set of geophysical techniques and disciplines.