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Summary of Proposal HYD0655

TitleSubsidence associated with fluid extraction in urban areas of the SW US and NW Mexico
Investigator Dixon, Timothy - University of South Florida, Department of Geology
Team Member
Dr. Wdowinski, Shimon - University of Miami, Marine Geology and Geophysics
Dr. Amelung, Falk - University of Miami, Marine Geology and Geophysics
Dr. Crosby, Chris - UNAVCO, WInSAR
SummaryA large number of acquifers are under severe environmental stress, mainly from urban development, pollution, population growth, climate change, and over-pumping. In a previous study (Cabral-Cano et al., 2008), we demonstrated that C-band InSAR can measure subsidence due to ground water withdrawal, and that simple models can be developed to relate the measured subsidence to the change in acquifer level. Here we propose to use higher spatial and temporal resolution TerraSAR-X data to investigate to suitability of X-band InSAR to other hydrological and subsidence applications. We will develop PS-InSAR maps of subsidence in several urban areas where there is a contrast of hydrologic management practices, then develop finite element models to relate the surface subsidence to acquifer depletion. Deliverables for this project include a final report and open literature publications. Data requirements: HH polarization, strip map mode (3 meter resolution), with coverage every 11 or 22 days, of two areas in northern Mexico: Nueva Laredo, and Ciudad Juarez Currently we are supported by NASA, which funds our research for the time period 10/2009-9/2012.

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