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Geophysics Department Seminar - Chris Marone: The Mechanics of Slow Earthquakes and the Spectrum of Fault Slip Behaviors

Date and Time: 
October 25, 2018 -
12:00pm to 1:15pm
Location: 
Mitchell 350/372
Contact Email: 
coreyann@stanford.edu
Contact Phone: 
650.497.3498
Event Sponsor: 
Geophysics Department

Speaker: Dr. Chris Marone, Penn State University

Earthquake science is in the midst of a revolution. Our understanding of tectonic faulting has been shaken to the core by the discoveries of seismic tremor, low frequency earthquakes, slow slip events, and other modes of fault slip. These phenomena represent modes of failure that were thought to be non-existent and theoretically impossible only a few years ago.  Despite the growing number of observations of slow earthquakes and the fact that they can trigger catastrophic large earthquakes their origin remains unresolved.  Basic questions remain regarding how slow ruptures can propagate quasi-dynamically, at speeds far below the Rayleigh wave speed, and how tectonic faults can host both slow slip and dynamic earthquake rupture.  Here, I focus on laboratory results from recent works that reproduce repetitive, slow slip and illuminate the underlying mechanics of slow earthquakes and the spectrum of fault slip behaviors.