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    • ABoVE: Permafrost Measurements and Distribution Across the Y-K Delta, Alaska, 2016

    Metadata Updated: December 7, 2023

    This dataset provides field observations of thaw depth and dominant vegetation types, a LiDAR-derived elevation map, and permafrost distribution and probability maps for an area on the coastal plain of the Yukon-Kuskokwim Delta (YKD), in western Alaska, USA. Field data were collected during July 8-17, 2016 to parameterize and to validate the derived permafrost maps. The YKD is in the sporadic to isolated permafrost zone where permafrost forms extensive elevated plateaus on abandoned floodplains. The region is extremely flat and vulnerable to eustatic sea-level rise and inland storm surges. These high-resolution permafrost maps support landscape change analyses and assessments of the impacts of climate change on permafrost in this region of high biological productivity, critical wildlife habitats, and subsistence-based human economy.

    Access & Use Information

    Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

    Downloads & Resources

    Dates

    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Graphic Preview

    High-resolution map of permafrost distribution created using the 2.5 m a.m.s.l (mean + 1 SD) threshold for the entire 2009 LiDAR swath. The insets show detail for areas of high elevation (left) and relative low elevation (right) (Whitley et al., 2018).

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date December 1, 2022
    Metadata Updated Date December 7, 2023
    Publisher ORNL_DAAC
    Maintainer
    Identifier C2162142273-ORNL_CLOUD
    Data First Published 2018-09-18
    Language en-US
    Data Last Modified 2023-06-12
    Category ABoVE, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://data.nasa.gov/data.json
    Schema Version https://project-open-data.cio.gov/v1.1/schema
    Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
    Citation Whitley, M., G. Frost, M.T. Jorgenson, M. Macander, C.V. Maio, and S.G. Winder. 2018. ABoVE: Permafrost Measurements and Distribution Across the Y-K Delta, Alaska, 2016. ORNL DAAC, Oak Ridge, Tennessee, USA. https://doi.org/10.3334/ORNLDAAC/1598
    Graphic Preview Description High-resolution map of permafrost distribution created using the 2.5 m a.m.s.l (mean + 1 SD) threshold for the entire 2009 LiDAR swath. The insets show detail for areas of high elevation (left) and relative low elevation (right) (Whitley et al., 2018).
    Graphic Preview File https://daac.ornl.gov/ABOVE/guides/Permafrost_Thaw_Depth_YK_fig1.png
    Harvest Object Id 9cbab0ea-bbb8-451b-a417-c11e9aea9233
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://doi.org/10.3334/ORNLDAAC/1598
    Metadata Type geospatial
    Old Spatial -165.69 61.17 -165.03 61.29
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash 95ffcc49282998a087d60e69d9abfb356a1ea4ae9e6b346468f54d4386c8095a
    Source Schema Version 1.1
    Spatial
    Temporal 2009-06-27T00:00:00Z/2016-07-17T23:59:59Z

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