20251023 11230300 1.0 TRUE 150000000 5000 ItemDescription Sentinel-1 Likely Damaged Areas for the Southern California Wildfires January 2025 <div style='text-align:Left;'><div><div>Date of Image(s):January 9, 2025, January 13, 2025, January 21, 2025Summary:This raster dataset (TIF) represents likely damaged/destroyed urban areas in Los Angeles, California, during the fires of January 2025. The map is the result of a coherent change detection analysis of interferometric Sentinel-1 radar (InSAR) images from January 2025 in comparison with pre-disaster reference images from 2022-2025. Coherent change detection analysis is used to show change across the entire domain, which includes vegetation and forested areas. This analysis is constrained to a snapshot of the FIRIS perimeter domain to highlight the damage to built up areas only.Potentially damaged areas denoted in orange represent data collected on January 9, 2025 from a Sentinel-1 pass over the Altadena/Eaton area. Potentially damaged areas denoted in red represent data collected on January 13, 2025 from a Sentinel-1 pass over the Palisades area. Potentially damaged structures denoted in red represent data collected on January 21, 2025.Date(s) and time(s) covered:Swaths from 9 January 2025, 14 January 2025, and January 21, 2025, with 188 images collected from 2022-12-20 to 2025-01-02 for a pre-disaster reference dataset.Suggested Usage:The map is meant for landscape-level geospatial overlay and visualization purposes of fire damage in urban/built-up regions. For example, the map is useful for tabulating estimates of the number of likely damaged or destroyed structures. Pixel values of 1 represent a region likely damaged or destroyed; pixel values of 0 represent all other regions.Satellite/Sensor:European Space Agency Copernicus Sentinel-1/10 meter spatial resolution processed to 40 meters for interferometric coherence change analysisResolution:40 metersCredits:Damage analysis of Copernicus Sentinel-1 satellite data by Corey Scher of CUNY Graduate Center and Jamon Van Den Hoek of Oregon State University.Contact: Jamon Van Den Hoek (jamon.vandenhoek@oregonstate.edu).Data sources:Sentinel-1 <a href='https://asf.alaska.edu/datasets/daac/sentinel-1/' target='_blank' style='text-decoration:underline;'>https://asf.alaska.edu/datasets/daac/sentinel-1/</a>Alaska Satellite Facility <a href='https://hyp3-docs.asf.alaska.edu/usage_guidelines/' target='_blank' style='text-decoration:underline;'>https://hyp3-docs.asf.alaska.edu/usage_guidelines/</a>CA Perimeters NIFC FIRIS data (<a href='http://gis.data.cnra.ca.gov/datasets/CALFIRE-Forestry::ca-perimeters-nifc-firis-public-view/' target='_blank' style='text-decoration:underline;'>gis.data.cnra.ca.gov/datasets/CALFIRE-Forestry::ca-perimeters-nifc-firis-public-view/</a>)Access and Use Constraints:Likely Damaged Areas: The damage map has not been field-validated and omission/commission errors are likely present. Regions that changed over the course of the reference period or were otherwise dynamic (such as places of construction or destruction or vegetated areas) are likely excluded from the analysis.Service URL:WMS Endpoint:</div></div></div> Damage analysis of Copernicus Sentinel-1 satellite data by Corey Scher of CUNY Graduate Center and Jamon Van Den Hoek of Oregon State University. Contact: Jamon Van Den Hoek jamon.vandenhoek@oregonstate.edu. Data sources: Sentinel-1 https://asf.alaska.edu/datasets/daac/sentinel-1/; Alaska Satellite Facility https://hyp3-docs.asf.alaska.edu/usage_guidelines/. SENTINEL1_DMG Damage assessment damage Sentinel-1 ASF CUNY Copernicus California Los Angeles Wildfires <div style='text-align:Left;'><div><div>The damage map has not been field-validated and omission/commission errors are likely present. Regions that changed over the course of the reference period or were otherwise dynamic (such as places of construction or destruction or vegetated areas) are likely excluded from the analysis.</div></div></div> 20251023