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Earth Surface & Interior

Understanding earthquakes and plate boundary zone mechanics has increasingly evolved from a fairly simple, constant-velocity/cyclic-occurrence paradigm to one in which transient deformation and stresses modulate earthquakes and slow slip events. One of the fundamental challenges for geodetic imaging is the ability to detect and discriminate transient and secular tectonic deformation signals from other signals and sources of noise that are inherent to each of these observations. We propose to develop an enhanced Network Inversion Filter (NIF) time variable GPS and InSAR geodetic imaging capability that we will apply to GPS, satellite InSAR, and UAVSAR InSAR observation over California and the Basin and Range region. This research has three principal objectives: (1) To develop the enhanced NIF for integrating InSAR and GPS time series to separate tectonic and transient deformation from other noise sources. (2) To demonstrate the applicability and requirements of the NIF for using UAVSAR time series to detect deformation transients. (3) To characterize the source for transient deformation signals through the use of the integrated NIF and other numerical methods. Once developed we will apply this approach to understand time varying deformation processes across the Eastern California Shear Zone; central and southern San Andreas fault systems; and the Basin and Range. The geodetic imaging capability that we will develop through this proposed research will enhance the capability of the Plate Boundary Observatory (PBO), UAVSAR, and DESDynI components of Earthscope. This proposed research is relevant to NASA's goals within the Geodetic Imaging component of EarthScope by strengthening the application of remote sensing (InSAR) in the determination of crustal dynamics through the extension of the NIF approach to include InSAR from both satellite and UAVSAR InSAR applied to understand transient deformation processes along faults and within the crust and upper mantle.

Project PI: Paul Lundgren/Jet Propulsion Laboratory

Jet Propulsion Laboratory M/S 300-233 4800 Oak Grove Drive Pasadena, CA 91109

Phone: 818.354.1795

Fax: 818.354.9476

Email: paul.lundgren@jpl.nasa.gov

http://science.jpl.nasa.gov/people/Lundgren/

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Started: Aug 09, 2010

Last Activity: Dec 09, 2010

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