Resolving the spatial and seasonal pattern of riverbank erosion on the Koyukuk River, Alaska, 2016-2022 ...

• Main Authors: Geyman, Emily, Douglas, Madison, Avouac, Jean-Philippe, Lamb, Michael
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2024
• Subjects: Arctic; The Sentinel; permafrost; Alaska
• Online Access: https://dx.doi.org/10.18739/a2s46h766; https://arcticdata.io/catalog/view/doi:10.18739/A2S46H766

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 ...