OGC WMS
type: Distribution
access URL: https://maps.disasters.nasa.gov/ags03/services/dist_s1_prototype/MapServer/WMSServer
format: OGC WMS
issued: 2025-09-18T18:03:53.567304
modified: 2025-09-18T18:03:53.556433

Descending Track 71: 2025-01-09 T13:53:03 UTC
type: Dataset
keyword: ARIA
keyword: Los Angeles
keyword: disturbance
keyword: California
keyword: surface disturbance
keyword: Sentinel-1
keyword: Wildfires
keyword: OPERA
landing page: https://disasters.amerigeoss.org/maps/NASA::descending-track-71-2025-01-09-t135303-utc
description: Researchers working with the Advanced Rapid Imaging and Analysis (ARIA) and Observational Products for End-Users from Remote Sensing Analysis (OPERA) teams at NASA's Jet Propulsion Laboratory, Pasadena, California, created the OPERA Surface Disturbance Alert from Sentinel-1 (DIST-S1-ALERT) prototype product suite to create maps of surface disturbance due to ongoing wildfires in Los Angeles County in January 2025. The OPERA DIST-S1 prototype results posted here are preliminary results, primarily intended to aid the field response and people who wanted to have a rough first look area impacted by wildfire. The ARIA-share website has always focused on posting preliminary results as fast as possible for urgent response. All information is provisional for use under emergency response guidelines. These data are provided with absolutely no warranty of any kind. Use at your own risk. Suggested Use: The DIST-S1 product shows disturbance of each pixel with a corresponding level of confidence: 0: No disturbance 1: Moderate Confidence Disturbance (more than 2.5 standard deviations from mean estimated from imagery prior to event) 2: High Confidence Disturbance (more than 4.5 standard deviations from mean estimated from imagery prior to event) Date of most recent image used: Ascending track 64: 2025-01-09T01:50:51 (UTC) or 2025-01-08T17:50:51 (PST). Descending track 71: 2025-01-09T13:53:03 (UTC) or 2025-01-09 05:53:03 (PST) Dates of other used images to define pre-fire baseline: 2024-09-11, 2024-09-23, 2024-10-05, 2024-10-17, 2024-10-29, 2024-11-10, 2024-11-22, 2024-12-04, 2024-12-16, 2024-12-28 Processing Details: The OPERA DIST-S1-ALERT prototype product provides a picture of surface disturbance (e.g., vegetation loss, structure change, damage) outside a historical norm using Sentinel-1A images. The products are distributed as GeoTIFFs. Pixels capturing disturbances are further differentiated as moderate confidence disturbance (pixel value = 1) and high confidence disturbance (p…
issued: 2025-01-17T15:30:55+00:00
modified: 2025-01-17T15:33:48+00:00
publisher: NASA ArcGIS Online

CSV
type: Distribution
access URL: https://disasters.amerigeoss.org/api/download/v1/items/68c6367869b94853a9bc624b9e230569/csv
format: CSV
issued: 2025-09-18T18:03:53.567305
modified: 2025-09-18T18:03:53.556513

GeoJSON
type: Distribution
access URL: https://disasters.amerigeoss.org/api/download/v1/items/68c6367869b94853a9bc624b9e230569/geojson
format: GeoJSON
issued: 2025-09-18T18:03:53.567308
modified: 2025-09-18T18:03:53.556694

Shapefile
type: Distribution
access URL: https://disasters.amerigeoss.org/api/download/v1/items/68c6367869b94853a9bc624b9e230569/shapefile
format: ZIP
issued: 2025-09-18T18:03:53.567306
modified: 2025-09-18T18:03:53.556591

KML
type: Distribution
access URL: https://disasters.amerigeoss.org/api/download/v1/items/68c6367869b94853a9bc624b9e230569/kml
format: KML
issued: 2025-09-18T18:03:53.567309
modified: 2025-09-18T18:03:53.556778

ArcGIS Hub Dataset
type: Distribution
access URL: https://disasters.amerigeoss.org/maps/NASA::descending-track-71-2025-01-09-t135303-utc
format: HTML
issued: 2025-09-18T18:03:53.567299
modified: 2025-09-18T18:03:53.556223

ArcGIS GeoService
type: Distribution
access URL: https://maps.disasters.nasa.gov/ags03/rest/services/dist_s1_prototype/MapServer/2
format: ArcGIS GeoServices REST API
issued: 2025-09-18T18:03:53.567303
modified: 2025-09-18T18:03:53.556348