{
 "culture": "en-US",
 "name": "",
 "guid": "",
 "catalogPath": "",
 "snippet": "100 m Sentinel-1 12-day median coherence mosaic from summer 2019, highlighting dune activity, vegetation dynamics, and seasonal surface changes; a 15 m version from 2021 is also available.",
 "description": "<DIV STYLE=\"text-align:Left;\"><DIV><DIV><P STYLE=\"margin:0 0 11 0;\"><SPAN STYLE=\"font-size:12pt\">100 m Sentinel-1 12-day median coherence mosaic from summer 2019, highlighting dune activity, vegetation dynamics, and seasonal surface changes; a 15 m version from 2021 is also available. &amp;&amp; <\/SPAN><\/P><P STYLE=\"margin:0 0 11 0;\"><SPAN STYLE=\"font-size:12pt\">We have included a 100 m resolution mosaic of Sentinel-1 12-daily median coherence image. This mosaic was generated from 12 daily pairs of all the Sentinel-1 images acquired over the study area in the summer (June-August) of 2019. The source data is accessible at: https://asf.alaska.edu/datasets/derived/global-seasonal-sentinel-1-interferometric-coherence-and-backscatter-dataset/.  Radar coherence is a measure that is sensitive to surface changes (dunes activity, vegetation, construction). The dunes have low coherence values and appear in dark shades in the provided coherence image. This dataset offers a unique perspective on the slower, cumulative changes affecting dune landscapes by providing median coherence measurements at 12-day repeat intervals, specifically during the summer months. It is invaluable for studying the broader patterns of dune migration, seasonal variations in sand deposition, and the long-term impacts of climate change on desertification processes.<\/SPAN><\/P><P><SPAN /><\/P><\/DIV><\/DIV><\/DIV>",
 "summary": "100 m Sentinel-1 12-day median coherence mosaic from summer 2019, highlighting dune activity, vegetation dynamics, and seasonal surface changes; a 15 m version from 2021 is also available.",
 "title": "Sentinel_1_12_day_Median_VV_Coherence_c (100m)",
 "tags": [
  "Sentinel-1",
  "SAR Coherence",
  "Interferometric Coherence",
  "Dune Dynamics",
  "Vegetation Monitoring",
  "Desertification",
  "Climate Change",
  "Seasonal Change"
 ],
 "type": "",
 "typeKeywords": [],
 "thumbnail": "",
 "url": "",
 "minScale": 150000000,
 "maxScale": 5000,
 "spatialReference": "",
 "accessInformation": "",
 "licenseInfo": "",
 "portalUrl": ""
}