Sentinel-1A produces its INSAR measurements of Napa valley earthquake


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The new Sentinel-1A radar satellite has already shown that it can be used to generate 3D models of Earth’s surface and will be able to closely monitor terrain deformation. As the first in a fleet of satellite missions for Europe’s Copernicus environmental monitoring programme, Sentinel-1A was launched on 3 April, 2014. This summer’s Napa Valley earthquake was an opportunity for Sentinel to produce an interferogram that accurately depicts post-seismic deformation.