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

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.

Data and Resources

Additional Info

Field Value
Maintainer Earthdata Forum
Last Updated June 22, 2026, 17:03 (UTC)
Created April 1, 2025, 14:08 (UTC)
accessLevel public
bureauCode {026:00}
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
harvest_object_id fce2197d-6163-4394-a862-f2ea124ed708
harvest_source_id b99e41c6-fe79-4c19-bbc3-9b6c8111bfac
harvest_source_title Science Discovery Engine
identifier 10.3334/ORNLDAAC/1616
license https://www.usa.gov/government-works
modified 2026-06-15T22:15:58Z
programCode {026:000}
publisher ORNL_DAAC
resource-type Dataset
source_datajson_identifier true
source_hash f617b6b4cbbd3aa309c27b985e68438ffec55525dc8e6a2f03b8f0def6a19f6a
source_schema_version 1.1
spatial ["CARTESIAN", [{"WestBoundingCoordinate": -161.459, "NorthBoundingCoordinate": 68.1463, "EastBoundingCoordinate": -143.305, "SouthBoundingCoordinate": 61.9076}]]
temporal 1984-01-01/2017-12-31
theme {"Earth Science"}