Over the course of two years, from October 2015 to October 2017, over 2,000 Sentinel-1 images were used to create a map showing ground movement across the United Kingdom. The map tracks areas of land subsidence and uplift based on processed data from Sentinel-1’s Synthetic Aperture Radar (SAR). SAR can be used to detect changes in surface heights with sub-millimeter precision in order to map land deformation.
The land deformation map was developed by Geomatic Ventures Limited, a commercial company spun off of the Nottingham Geospatial Institute, University of Nottingham. Known as the UK Relative Land Motion Map, it covers the United Kingdom with a spatial resolution of 90 meters. The web map interface was built with Mango Maps. Using a rainbow classification scheme, the map indicates ares that have subsided (trending red) or uplifted (trending blue) between 2015 and 2017. Users can search for areas by typing in a location or post code or use the pan and zoom tools. There are also some areas outlined by rectangles that features areas of interesting subsidence or uplift.
More: Map records UK’s small ups and downs, BBC News