Description:

Stress Interaction Between Slow and Fast Earthquakes

Speaker:

Kevin Chao - Data Science Scholar, Center for Optimization and Statistical Learning (OSL) & Northwestern Institute for Complex Systems (NICO)

Talk Abstract:

Tectonic tremor and slow slip events (one type of slow earthquake), located downdip from the seismogenic zone, hold the key to recurring patterns of typical earthquakes. The finding of the migration of slow slip before the 2011 Mw9.0 Tohoku earthquake (Kato et al., Science, 2012) has provided new insight into the study of stress transform of slow earthquakes in fault zones prior to megathrust earthquakes. To enhance our understanding of the stress interaction between tremor and earthquake, we conduct the following studies, in which we (1) search for tremor globally, (2) examine tremor activity associated with distant earthquakes, and (3) quantify the temporal variation of tremor activity before and after nearby earthquakes. The findings from this study can enhance our understanding of the interaction among tremor, slow slip, and megathrust earthquakes in the high seismic hazard regions.

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