| snippet:
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Water Extents and RGB Composite (Copernicus Sentinel-1) for Flooding in Türkiye and Syria |
| summary:
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Water Extents and RGB Composite (Copernicus Sentinel-1) for Flooding in Türkiye and Syria |
| extent:
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[[34.3063424637343,33.7185774499403],[41.0593415845061,39.0725717628874]] |
| accessInformation:
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NASA MSFC, Alaska Satellite Facility, ESA, Copernicus |
| thumbnail:
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thumbnail/thumbnail.png |
| maxScale:
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1.7976931348623157E308 |
| typeKeywords:
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["Data","Service","Map Service","ArcGIS Server"] |
| description:
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<div style='text-align:Left;'><div><div><p><span style='font-weight:bold;'>Date of Images:</span></p><p><span>2/4/2023, 2/5/2023, 2/9/2023, 2/10/2023</span></p><p><span style='font-weight:bold;'>Date of Next Image:</span></p><p><span>None Expected</span></p><p><span style='font-weight:bold;'>Summary:</span></p><p><span style='font-style:italic;'>Water Extents:</span></p><p><span>The Alaska Satellite Facility has developed water extent images using the Sentinel-1A/B Synthetic Aperture Radar (SAR) instrument. These images can be used to see where water is located at the time of the satellite overpass. This product shows all water detected and does not differentiate between normal water and flood water. To determine where flooding may have occurred, combine this layer with a reference water layer.</span></p><p><span style='font-style:italic;'>RGB Composite:</span></p><p><span>The Alaska Satellite Facility has developed false color Red, Green, Blue (RGB) and Radiometrically Terrain-Correct (RTC) composites of the Sentinel-1A/B Synthetic Aperture Radar (SAR) instrument which assigns the co- and cross-polarization information to a channel in the composite. When used to support a flooding event, areas in blue denotes water present at the time of the satellite overpass before or after the start of the hurricane.</span></p><p><span>Blue areas have low returns in VV and VH (smooth surfaces such as calm water, but also frozen/crusted soil or dry sand), Green areas have high returns in VH (volume scatterers such as vegetation or some types of snow/ice), and Red areas have relatively high VV returns and relatively low VH returns (such as urban or sparsely vegetated areas).</span></p><p><a href='https://earthdata.nasa.gov:443/learn/articles/getting-started-with-sar' rel='nofollow ugc' style='text-decoration:underline;'><span>Additional SAR Information</span></a></p><p><span style='font-weight:bold;'>Suggested Use:</span></p><p><span style='font-style:italic;'>Water Extents:</span></p><p><span><span>This product shows all water detected and does not differentiate between normal water and flood water. To determine where flooding may have occurred, combine this layer with a reference water layer.</span></span></p><p><span style='font-style:italic;'>RGB Composite:</span></p><p><span>In this image, water appears in blue, vegetated areas in shades of green and urban areas in bright orange. It is recommended to use this product with ancillary information to derive flooded areas.</span></p><p><span>Blue areas have low returns in VV and VH (smooth surfaces such as calm water, but also frozen/crusted soil or dry sand), Green areas have high returns in VH (volume scatterers such as vegetation or some types of snow/ice), and Red areas have relatively high VV returns and relatively low VH returns (such as urban or sparsely vegetated areas).</span></p><p><span style='font-weight:bold;'>Satellite/Sensor:</span></p><p><span>Synthetic Aperture Radar on European Space Agency's (ESA) Copernicus Sentinel-1A satellite</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 data used in this derived product, contains modified Copernicus Sentinel data (2023), processed by ESA, Alaska Satellite Facility, NASA MSFC</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><a href='https://maps.disasters.nasa.gov/ags04/services/turkey_earthquake_2023/sentinel1_waterextents_rgb/MapServer/WMSServer' rel='nofollow ugc' target='_blank'>https://maps.disasters.nasa.gov/ags04/services/turkey_earthquake_2023/sentinel1_waterextents_rgb/MapServer/WMSServer</a><span style='font-weight:bold;'><br /></span></p><p><span style='font-weight:bold;'>Data Download:</span></p><p><a href='https://maps.disasters.nasa.gov:443/download/gis_products/event_specific/2023/turkiye_earthquakes_202302/sentinel1/' rel='nofollow ugc' style='text-decoration:underline;'><span>https://maps.disasters.nasa.gov/download/gis_products/event_specific/2023/turkiye_earthquakes_202302/sentinel1/</span></a></p></div></div></div> |
| licenseInfo:
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<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>NASA data and products are freely available to federal, state, public, non-profit and commercial users. This information can be experimental- or research-grade data products and may not be appropriate for operational use. These NASA data products, services, and the Disasters Mapping Portal are intended to aid decision makers and enhance situational awareness, but these data are not guaranteed to be consistently available or routinely updated. Use of this product should include: "Contains modified Copernicus Sentinel data (2023) processed by ESA"</SPAN></P></DIV></DIV></DIV> |
| catalogPath:
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| title:
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Water Extents and RGB Composite (Copernicus Sentinel-1) for Flooding in Türkiye and Syria |
| type:
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Map Service |
| url:
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|
| tags:
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["NASA","NASA Disasters Program","Copernicus","ESA","Sentinel-1","SAR","Flooding","Türkiye","Syria"] |
| culture:
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en-US |
| name:
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sentinel1_waterextents_rgb |
| guid:
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BF51D125-49BE-4C90-B156-9D4B69C5F1B9 |
| minScale:
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0 |
| spatialReference:
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WGS_1984_UTM_Zone_37N |