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  "Comments": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P><SPAN STYLE=\"font-weight:bold;\">Date of Images:<\/SPAN><\/P><P><SPAN>9/20/2021, 9/22/2021<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Date of Next Image:<\/SPAN><\/P><P><SPAN>Unknown<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Summary:<\/SPAN><\/P><P><SPAN>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 or strongly affected by the Volcanic eruption (starting September 19, 2021) in island of La Palma. Each pixel measures about 30 meters across.<\/SPAN><\/P><UL><LI><P><SPAN STYLE=\"font-style:italic;\">9/20/2021<\/SPAN><SPAN>: The map was derived from synthetic aperture radar (SAR) images on Sep 20, 2021 by the Copernicus Sentinel-1 satellites operated by the European Space Agency (ESA). The pre-event images were taken before (Sep 08, 2021 and Sep 14, 2021) the volcano erupted.<\/SPAN><\/P><\/LI><LI><P><SPAN STYLE=\"font-style:italic;\">9/22/2021<\/SPAN><SPAN>: The map was derived from synthetic aperture radar (SAR) images on Sep 22, 2021 by the Copernicus Sentinel-1 satellites operated by the European Space Agency (ESA). The pre-event images were taken before (Sep 10, 2021 and Sep 16, 2021) the volcano erupted.<\/SPAN><\/P><\/LI><\/UL><P><SPAN STYLE=\"font-weight:bold;\">Suggested Use:<\/SPAN><\/P><P><SPAN>The color variation from yellow to red indicates increasingly more significant surface change. Preliminary validation was done by comparing with the Media reports and Copernicus Emergency Management Service mapping.<\/SPAN><\/P><P><SPAN>This damage proxy map should be used as guidance to identify damaged areas or areas affected by heavy volcanic ash fall, 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 and other large changes, but small-scale change or partial structural damage may not be detected by this map.<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Satellite/Sensor:<\/SPAN><\/P><P><SPAN>Copernicus Sentinel-1 Synthetic Aperture Radar (SAR)<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Resolution:<\/SPAN><\/P><P><SPAN>30 meters<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Credits:<\/SPAN><\/P><P><SPAN>Sentinel-1 data were accessed through the Copernicus Open Hub and the Alaska Satellite Facility server. The product contains modified Copernicus Sentinel data (2021), processed by ESA and analyzed by the NASA-JPL/Caltech ARIA team. Part of the funding was provided by NASA's Earth Applied Sciences Disasters Program.<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">Esri REST Endpoint:<\/SPAN><\/P><P><SPAN>See URL Section on right side of page<\/SPAN><\/P><P><SPAN STYLE=\"font-weight:bold;\">WMS Endpoint:<\/SPAN><\/P><P><SPAN /><\/P><P><SPAN STYLE=\"font-weight:bold;\">Data Download:<\/SPAN><\/P><P><A href=\"https://aria-share.jpl.nasa.gov/20210919-LaPalma_Volcano/DPM/\"><SPAN>https://aria-share.jpl.nasa.gov/20210919-LaPalma_Volcano/DPM/<\/SPAN><\/A><\/P><\/DIV><\/DIV><\/DIV>",
  "Subject": "ARIA Damage Proxy Map (Copernicus Sentinel-1) for the La Palma Eruption September 2021",
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  "Keywords": "NASA,NASA Disasters Program,La Palma,Volcano,Canary Islands,ARIA,Copernicus,Sentinel-1,ESA,Cumbre Vieja"
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