2015 Northwest of Kathmandu, Nepal
-Surface Displacement from the M7.8 Earthquake- Differential Interferometric SAR (DInSAR) Analysis

This figure shows the results of differential interferometric SAR processing (InSAR) using C-band SAR data from Sentinel-1 satellite operated by the ESA, acquired before (April 17, 2015) and after (April 29, 2015) the earthquake that occurred northwest of Kathmandu, Nepal, at 11:56 local time on April 25, 2015. The seismic source was located about 77 km northwest of Kathmandu at a depth of approximately 15 km. The focal mechanism solution provided by the United States Geological Survey (USGS) indicates NNE-SSW compression. Analysis of the satellite data suggests that a broad area extending more than 100 km in the east-west direction was uplifted. The maximum uplift occurred about 20 km east-northeast of Kathmandu, with an estimated displacement exceeding 1.2 m.