[Eoas-seminar] Colloquium Today: Thursday February 15 3:30

eoas-seminar at lists.fsu.edu eoas-seminar at lists.fsu.edu
Thu Feb 15 09:10:17 EST 2018


Announcing a colloquium presentation entitled:

Earthquake rupture evolution and triggering revealed by back-projection
By: Wenyuan Fan
Woods Hole Oceanographic Institution

Thursday February 15 at 3:30pm
Baum Room: 353LOV

Abstract: Large to great earthquakes (M > 7) show numerous complexities when they are imaged in detail. For example, earthquakes often rupture multiple faults and may contain a number of large subevents. The fault systems hosting these earthquakes are mostly in plate-boundary regions and they often interact with each other. These complexities challenge traditional source imaging approaches, such as finite-fault or moment-tensor inversions. In contrast, back-projection has proven effective in resolving the detailed spatiotemporal evolution of large earthquakes because the method requires few prior assumptions, although care must be taken to avoid imaging artifacts.  The superior spatial resolution of global array back-projection enables investigation of frequency-dependent rupture and detection of both subevents and early aftershocks.  I will discuss large earthquake kinematics and their near-instantaneously triggered aftershocks that are revealed by the global back-projection method.
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Dr. Vincent J.M. Salters
National High Magnetic Field Laboratory and Department of Earth, Ocean and Atmospheric Sciences
Florida State University
Tallahassee, Florida
Phone: 850-644-1934, Skype: vsalters





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