ARIA DPM Sentinel-1 TD21 v0.9, Türkiye and Syria

The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory and California Institute of Technology in Southern California created this Damage Proxy Map (DPM) depicting areas that are likely damaged by the large earthquakes (Feb. 06, 2023) in Türkiye (Turkey) and Syria. The map was derived from synthetic aperture radar (SAR) images on Feb. 10, 2023 by the Copernicus Sentinel-1 satellites operated by the European Space Agency (ESA). The pre-event images were taken from Sep. 19, 2022 to Jan. 29, 2022). 

The image covers an area of 252 by 337 kilometers (156 by 210 miles), shown by the large red polygon. Each pixel measures about 30 meters across. The color variation from yellow to red indicates increasingly more significant surface change. Preliminary validation was done by comparing with the Media reports. This damage proxy map should be used as guidance to identify damaged areas, and may be less reliable over vegetated. 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. Some areas at higher elevation that were covered by snow on Feb. 10 and some areas of sand in Syria may also show apparent surface change that is not damage to buildings. This map is most sensitive to building damage, but small-scale change or partial structural damage may not be detected by this map. 

Sentinel-1 data were accessed through the Copernicus Open Hub and the Alaska Satellite Facility server. The product contains modified Copernicus Sentinel data (2022-2023), processed by ESA and analyzed by the NASA-JPL/Caltech ARIA team in collaboration with Earth Observatory of Singapore - Remote Sensing Lab (EOS-RS). Part of the funding was provided by NASA's Earth Applied Sciences Disasters Program.

NOTE: If you are loading the KMZ file in Google Earth Pro, to avoid slight color degradation, please make sure to uncheck the "Compress" option in the Preference > 3D View > Texture Colors (for Mac) or Tools > Options > 3D View > Texture Colors (for Windows). Google Earth may need to be restarted afterwards.

The products (KMZ and GeoTIFF files) are available to download at https://aria-share.jpl.nasa.gov/20230206_Turkey_EQ/DPM/ 

For more information about ARIA, visit: http://aria.jpl.nasa.gov