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Elizabeth Cochran

Res. Geophysicist

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Dr. Elizabeth Cochran is a geophysicist with the US Geological Survey in Pasadena, California. As an observational seismologist, her research ranges from studying the detailed behavior of fault slip to developing new techniques to densely observe earthquakes. 

Dr. Cochran conducts detailed studies of aftershock behavior, fault zone properties, and deep seismic slip (tremor). After a large earthquake, large numbers of seismic stations are installed in near the mainshock to record the hundreds to thousands of aftershocks that will occur over the subsequent months. These data are then used to image fault structure and study the small-scale details of fault complexity and damage zones around faults. The work has shown that fault structures can exhibit highly complex slip behavior. And, faults tend to localize on zones that are 100m - 1 km wide and severely damaged compared to surrounding, intact rock. 

She is also currently investigating new techniques to densely monitor strong ground motions in urban areas. The Quake-Catcher Network is a collaborative research effort that uses low-cost MEMS sensors connected to personal computers or other devices in homes, offices, and schools. The data collected by these sensors may be used to augment the exisiting seismic networks to aid in the study of earthquake rupture processes, block-by-block variations in ground motion, and may even provide useful data for earthquake early warning systems currently being developed for California and the Pacfic Northwest. 




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My Science Topics


Science Topic
Subtopic
Natural Hazardsearthquakes
Earth Characteristicsearth structure


Contact Information

Elizabeth Cochran
525 & 535 S. Wilson St.
Pasadena, CA 91106-3212
ecochran@usgs.gov
626-583-7238
626-583-7827 - Fax
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