Figure Caption. This is a double difference image showing the topographic change that accumulated over 3 years.  Apparently, there is about 3 cm of strain directed along a NE axis.  This fringe pattern is in agreement with the sparsely distributed GPS observations.  However, there may be some processing artifacts in the image, and we are working to validate the image.  Still, the agreement with GPS is quite encouraging.  Our goal is to use interferometry and numerous SAR scenes to detect any precursor topographic change related to seismicity.

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