ABoVE: Riverbank Erosion and Vegetation Changes, Yukon River Basin, Alaska, 1984-2017

Description

This dataset provides a time series of riverbank erosion and vegetation colonization along reaches of the Yukon River (3 study areas), Tanana and Nenana Rivers (1 area), and Chandalar River (1 area) in interior Alaska over the period 1984-2017. The change data were derived from selected 30-m images from Landsat TM, Landsat ETM+, and Landsat Operational Land Imager (OLI) surface reflectance products. Image classification used the Normalized Differenced Vegetation Index (NDVI) with an NDVI threshold of 0.2 to differentiate vegetated from non-vegetated pixels. Images were assigned to one of seven or eight multiyear intervals, within the 1984-2017 overall range, for each study area. Time intervals vary by study site. Change detection identified shifts from one time interval to the next: changes from vegetated to non-vegetated classes were considered riverbank erosion and changes from non-vegetated to vegetated classes were considered vegetation colonization.

Resources

Name Format Description Link
33 ABoVE: Erosion and Vegetation Along the Yukon River and Tributaries: 1984-2017: Erosion_Vegetation_Yukon.pdf https://data.ornldaac.earthdata.nasa.gov/public/above/Erosion_Vegetation_Yukon/comp/Erosion_Vegetation_Yukon.pdf
21 This link allows direct data access via Earthdata login https://daac.ornl.gov/above/Erosion_Vegetation_Yukon/
21 ORNL DAAC Data Set Documentation https://daac.ornl.gov/ABOVE/guides/Erosion_Vegetation_Yukon.html
21 Data set Landing Page DOI URL https://doi.org/10.3334/ORNLDAAC/1616
21 Search results for publications that cite this dataset by its DOI. https://scholar.google.com/scholar?q=10.3334%2FORNLDAAC%2F1616
8 ABoVE: Erosion and Vegetation Along the Yukon River and Tributaries: 1984-2017: LandsatImagery_DatesSatellitesSensors.csv https://data.ornldaac.earthdata.nasa.gov/public/above/Erosion_Vegetation_Yukon/comp/LandsatImagery_DatesSatellitesSensors.csv
21 ABoVE project site https://above.nasa.gov
21 Web Coverage Service for this collection. https://webmap.ornl.gov/wcsdown/dataset.jsp?ds_id=1616
34 Riverbank erosion and vegetation colonization at the Yukon River 1 study area, located along the Middle Yukon River between Circle and Fort Yukon, Alaska, for multi-year intervals spanning the years 1985-2017. https://daac.ornl.gov/ABOVE/guides/Erosion_Vegetation_Yukon_Fig1.png

Tags

  • land-surface
  • biosphere
  • vegetation
  • landscape
  • erosion-sedimentation
  • earth-science

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