PHYSICAL MODELING OF EARTHQUAKE RUPTURE DYNAMICS AND GROUND MOTIONS
TITLE:
PHYSICAL MODELING OF EARTHQUAKE RUPTURE DYNAMICS AND GROUND MOTIONS
DATE:
Friday, May 1st, 2009
TIME:
3:30 PM
LOCATION:
GMCS 214
SPEAKER:
Shuo Ma, Assistant Professor, Department of Geological Sciences, San Diego State University
ABSTRACT:
Earthquake rupture models incorporating our best known fault geometry, state of stress in the crust, rock friction, realistic velocity structure provide important insights into the earthquake source physics and lay the foundation for predicting strong ground motions expected in future large earthquakes. Â In this talk, I will review this interdisciplinary field based on the knowledge from earthquake geology, seismology, engineering, and computational sciences. I will describe how an earthquake rupture problem is formulated in a continuum mechanics context and how the problem is solved numerically. Â Examples include the MW 6.0 Parkfield, California earthquake (one of the best recorded earthquake), scenario MW 7.7 Sierra Madre earthquakes in Los Angeles, and a physical model that accounts for the off-fault material damage using plasticity theory.
HOST:
Steve Day
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