1 National Aeronautics and Space Administration Satellite Radar Images Quake Interferograms from Japanese radar satellite show up to 3 meters (10 feet) of fault slip along full length of fault system (dashed white line) Gray areas show wide- spread surface disruption in Colorado River Delta due to liquefaction, flooding and other effects Epicenter

2 National Aeronautics and Space Administration NASA Gulfstream Flies UAVSAR

3 National Aeronautics and Space Administration UAVSAR Images Motion 5 cm (2 inch) contours of ground motion Ground moved as much as 80 cm (30 inches) south and down First earthquake deformation captured by the UAVSAR system using data acquired on October 21, 2009 and April 13, 2010.

4 National Aeronautics and Space Administration Fault Slip Continued After April Numerous small fault offsets of 0.5–4.5 cm on faults trending northwest and northeast in Yuha desert Yuha Fault slipped at time of main earthquake and afterwards, but motion mostly stopped after July. image resolution ~7 m, 5 cm contours Newly mapped Yuha Fault

5 National Aeronautics and Space Administration Deep Fault Slipped June-August UAVSAR and satellite radar shows deep fault slip from June to August 2010 in western Yuha desert Northwest extension of Laguna Salada Fault Zone was cause of June 14 M5.7 and its aftershocks Motion stopped by September

6 National Aeronautics and Space Administration Radar Monitors Surface Motion Radar image differencing (interferometry) measures ground motion to few mm or small fraction of inch Large motions near main earthquake reveal complex fault system Smaller motions in Yuha Desert show triggered slip on faults that transfer strain from Mexico to Elsinore and San Jacinto Faults Late fault slip in June and July ended by September 2010