Southern California Groundwater
This animation depicts variations in surface elevation resulting from the discharge and recharge of groundwater basins in Southern California. These seasonal fluctuations, which range between -5 and +5 centimeters (-2 to +2 inches), result from the pumping of groundwater during the dry season (Summer/Fall) and recharge of the basins during the wet season (Winter/Spring). Reductions in elevation, resulting from extraction of groundwater, are shown in orange, while increases in elevation, resulting from the recharge of the basins, are shown in blue.
Radar reveals changes in Southern California groundwater.
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Credits
Please give credit for this item to:
ESA/NASA/JPL-Caltech, SAR data and analysis courtesy of Paul Lundgren of the Jet Propulsion Laboratory.
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Project support
Release date
This page was originally published on Thursday, October 17, 2013.
This page was last updated on Friday, August 2, 2024 at 5:55 PM EDT.
Related papers
Lanari, R., P. Lundgren, M. Manzo, and F. Casu (2004), Satellite radar interferometry time series analysis of surface deformation for Los Angeles, California, Geophys. Res. Lett., 31, L23613, doi:10.1029/2004GL021294.
Lanari, R., P. Lundgren, M. Manzo, and F. Casu (2004), Satellite radar interferometry time series analysis of surface deformation for Los Angeles, California, Geophys. Res. Lett., 31, L23613, doi:10.1029/2004GL021294.
Datasets used
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[ERS-1: SAR]
ID: 171 -
Differential Interferometry [ERS-1 and ERS-2: SAR]
ID: 720
Note: While we identify the data sets used on this page, we do not store any further details, nor the data sets themselves on our site.