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Dates of Image:
Numerous Dates in May-August 2020
Date of Next Image:
None
Summary:
The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory (JPL) and California Institute of Technology (Caltech), California, in collaboration with the Earth Observatory of Singapore (EOS), created this Damage Proxy Map (DPM) depicting areas that are likely damaged caused by the ammonium nitrate blast in Beirut, Lebanon, on Aug 4, 2020. 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 before and after SAR data acquired from four different Sentinel-1 tracks since May 1, 2020.
Each pixel measures about 10 meters across. The color variation from yellow to red indicates increasingly more significant surface change. Preliminary validation was done by comparing with the DigitalGlobe optical satellite imagery. This damage proxy map should be used as guidance to identify potentially 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 indicating more significant change or building damage due to the explosion. The map may be less reliable over vegetated areas. The lack of colored pixels over vegetated 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:
10 meters
Credits:
Contains modified Copernicus Sentinel data, processed by ESA. Analyzed by the NASA-JPL/Caltech ARIA team. This task was carried out at JPL funded by NASA Disasters Program.
Esri REST Endpoint:
See URL Section on right side of page
Dates of Image:
Numerous Dates in May-August 2020
Date of Next Image:
None
Summary:
The Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory (JPL) and California Institute of Technology (Caltech), California, in collaboration with the Earth Observatory of Singapore (EOS), created this Damage Proxy Map (DPM) depicting areas that are likely damaged caused by the ammonium nitrate blast in Beirut, Lebanon, on Aug 4, 2020. 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 before and after SAR data acquired from four different Sentinel-1 tracks since May 1, 2020.
Each pixel measures about 10 meters across. The color variation from yellow to red indicates increasingly more significant surface change. Preliminary validation was done by comparing with the DigitalGlobe optical satellite imagery. This damage proxy map should be used as guidance to identify potentially 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 indicating more significant change or building damage due to the explosion. The map may be less reliable over vegetated areas. The lack of colored pixels over vegetated 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:
10 meters
Credits:
Contains modified Copernicus Sentinel data, processed by ESA. Analyzed by the NASA-JPL/Caltech ARIA team. This task was carried out at JPL funded by NASA Disasters Program.
Esri REST Endpoint:
See URL Section on right side of page