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Earth Surface & Interior

The proposed project aims to undertake a systematic study of fault creep in northern California using Persistent Scatterer InSAR (PS-InSAR), an advanced geodetic imaging technique. Fault creep is a behavior of some faults where instead of showing conventional “stick-slip” behavior, (i.e. long periods of locking separated by sudden earthquake ruptures), faults slip gradually at the surface without initiating earthquakes. The occurrence of creep can potentially reduce the magnitude of future earthquakes on a fault, and is therefore an important consideration in seismic hazard analyses. Through processing PS-InSAR data on multiple tracks covering the Calaveras-Hayward-Rodgers Creek-Maacama fault zone, and boundary element modeling of those data, we hope to generate maps of the distribution and rate of creep along the fault zone. By adding complexities to our models, e.g. realistic frictional effects, we hope gain insight into the mechanics of such fault behavior and to address problems such as the response of creeping fault segments to nearby earthquake ruptures, which are relevant to current concerns surrounding the high probability of an large earthquake on the Hayward fault. We propose to involve local youth in our study area in a program of monitoring of the creeping faults in their midst. This outreach campaign, entitled “Citizen Creepmeters”, ill accompany undergraduate and graduate courses in remote sensing, active tectonics and the earthquake cycle aimed at addressing NASA concerns in education at multiple levels.

Project PI: Gareth Funning/University of California, Riverside

University of California, Riverside Department of Earth Sciences Geology Building 900 University Ave. Riverside, CA 92521

Phone: (951) 827-3434

Fax: (951) 827-4324

Email: gareth@ucr.edu

http://earthscience.ucr.edu/funning.html

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Started: Aug 09, 2010

Last Activity: Dec 09, 2010

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