ARIA Damage Proxy Map (Copernicus Sentinel-1) on 3/8/2020 for the Nashville Tornado
Date of Image: 3/8/2020 Date of Next Image: None Expected Summary: The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory and California Institute of Technology, both in Pasadena, California, created this Damage Proxy Map (DPM) depicting areas that are likely damaged caused by the tornado in Nashville. The map was derived from synthetic aperture radar (SAR) images from the Copernicus Sentinel-1 satellites, operated by the European Space Agency (ESA). The team compared the post-event image acquired on March 08, 2020 with pre-event images taken since August 2019. The color variation from yellow to red indicates increasingly more significant surface change. Preliminary validation was done by comparing with the aerial photos by NOAA. This damage proxy map should be used as guidance to identify damaged areas, and may be less reliable over vegetated areas. For example, the scattered colored pixels over vegetated areas may be false positives, and the lack of colored pixels over vegetated areas does not necessarily mean no damage. This map is most sensitive to building damage, but small scale change or partial structural damage may not be detected by this map. Suggested Use: This damage proxy map shows surface change with yellow to red indiciating more significant change or building damage due to the recent earthquakes. The damage proxy map should be used as guidance to identify damaged areas and may be less reliable over vegetated areas. The lack of colored pixels over vegeated areas does not necessarily mean no damage. Small scale change or partial structural damage may not be detected by this map. Satellite/Sensor: Copernicus Sentinel-1 Synthetic Aperture Radar (SAR) Resolution: 30 meters Credits: Contains modified Copernicus Sentinel data (2020), processed by ESA. Analyzed by the NASA-JPL/Caltech ARIA team. This task was carried out at JPL funded by NASA. ESRI REST Endpoint: See URL section on right side of the page WMS Endpoint: https://maps.disasters.nasa.gov/ags04/services/nashville_tornado_202003/aria_dpm_sentinel1_20200308/ImageServer/WMSServer Download Link: http://aria-share.jpl.nasa.gov/20200303-Nashville_Tornado/DPM/