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This dataset describes measurements of river migration rates (averaged over the period 2016-2022) in three locations within the Yukon River Watershed: Huslia, Alaska (AK) (65.700 N, 156.387 W), Beaver, AK (66.362 N, 147.398 W), and Alakanuk, AK (62.685 N, 164.644 W). Huslia is located on the Koyukuk River and Beaver and Alakanuk are located on the Yukon River. The river migration rates are quantified from sub-pixel correlation of optical satellite imagery (Sentinel-2 imagery, 10 meter (m) spatial resolution), following the methodology of Geyman et al. (2024). The methodology allows for the detection of riverbank erosion at scales approximately 5-10 times smaller than the pixel size, so the detection threshold is 1-2 m over the approximately 7-year interval, corresponding to a migration rate of 0.1 to 0.3 m/year. The motion of the eroding and accreting sides of the river are quantified separately. The river migration rate datasets are made available as georeferenced shapefiles.
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Resolving the spatial and seasonal pattern of riverbank erosion on the Koyukuk River, Alaska, 2016-2022
This dataset describes measurements of inter-annual to sub-seasonal riverbank erosion rates on the Koyukuk River, Alaska, over the period 2016-2022. The data are used in the paper: “Geyman, E., Douglas, M., Avouac, J.-P. and Lamb, M. Permafrost slows Arctic riverbank erosion, in review (2024).” The dataset contains two sets of measurements: (1) riverbank displacement estimated from Sentinel-2 optical satellite imagery (10 meter (m) resolution) over the period 30-Aug-2016 to 13-Jul-2022, and (2) riverbank displacement estimated from Planet optical satellite imagery (3 m resolution) over the period 31-Aug-2016 to 01-Oct-2022. The first dataset is based on comparison of Sentinel-2 satellite acquisitions from the start and end of the study interval. The second dataset analyzes 65 PlanetScope image mosaics (for an average of 9 observations per year). The Matlab code used to analyze the Sentinel-2 and PlanetScope imagery, as well as to process the sub-seasonal displacement estimates, is included in the file “Code.zip”.
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- Award ID(s):
- 2031532
- PAR ID:
- 10578752
- Publisher / Repository:
- NSF Arctic Data Center
- Date Published:
- Format(s):
- Medium: X Other: text/xml
- Sponsoring Org:
- National Science Foundation
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