Subsidence Mexico City

This image, showing surface deformation in Mexico City, was generated using a ‘stack’ of 11 images aquired between 4 April and 30 November 2013. The images are from Radarsat-2, which was programmed to work in an experimental imaging mode called Terrain Observation by Progressive Scans in azimuth (TOPS) to mimic Sentinel-1A’s interferometric wide-swath mode. Images such as this are helping users prepare for Sentinel-1A.