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    • NDVI change for Icy Bay, Alaska from May 2015 to May 2016

    Metadata Updated: January 7, 2026

    Normalized difference vegetation index (NDVI) is an indicator of vegetation health and density. High NDVI values generally correspond to dense vegetation and low NDVI values generally correspond to sparsely vegetated or barren areas. NDVI was calculated for pan-sharpened Landsat 8 Operational Land Imager images acquired on May 13, 2015 and May 15, 2016 for the region around Icy Bay, Alaska. NDVI results from 2015 were subtracted from results for 2016 to produce a change image. The change image can be used to assess changes in vegetation patterns resulting from a landslide that occurred near Tyndall Glacier in October, 2015 and generated a tsunami in Taan Fiord, an arm of Icy Bay. Positive change in NDVI generally indicates areas where vegetation is denser or more vigorous in 2016 than in 2015, whereas negative values generally imply a decrease or loss of vegetation between 2015 and 2016.

    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 January 7, 2026
    Metadata Updated Date January 7, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 7, 2026
    Metadata Updated Date January 7, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_597244c5e4b0ec1a4885edf7
    Data Last Modified 2020-08-27T00:00:00Z
    Category geospatial
    Public Access Level public
    Bureau Code 010:12
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    Metadata Catalog ID https://ddi.doi.gov/usgs-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
    Harvest Object Id 86f97660-832f-4a04-8390-c0dfb103b9db
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial -141.764575924, 59.84226727, -141.040778079, 60.25376627
    Source Datajson Identifier True
    Source Hash 6bfd75d85734107606d9465d5ec2cf7519bebeaeca678fe7aaa4ac44ab9912bb
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": -141.764575924, 59.84226727, -141.764575924, 60.25376627, -141.040778079, 60.25376627, -141.040778079, 59.84226727, -141.764575924, 59.84226727}

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