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    • Interferometric Synthetic Aperture Radar (IFSAR) Alaska

    Metadata Updated: August 23, 2025

    The U.S. Geological Survey (USGS) National Geospatial Program (NGP) developed the Alaska Mapping Initiative (AMI) to collaborate with the State and other Federal partners to acquire 3-dimensional elevation data to improve statewide topographic maps for Alaska. AMI coordinates Federal activities through the Alaska Mapping Executive Committee (AMEC) and State efforts through Alaska's Statewide Digital Mapping Initiative (SDMI) to ensure a unified approach for consistent data acquisition and enhancement of elevation data products. AMI attained interferometric synthetic aperture radar (IFSAR) to generate digital elevation model (DEM) data. This radar mapping technology is an effective tool for collecting data in challenging circumstances such as cloud cover, extreme weather conditions, rugged terrain, and remote locations. Airborne IFSAR data were flown over South Central Alaska in the summer of 2010 and over Northwest Alaska in 2012.

    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 November 12, 2020
    Metadata Updated Date August 23, 2025

    Metadata Source

    Harvested from NASA Data.json

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date November 12, 2020
    Metadata Updated Date August 23, 2025
    Publisher DOI/USGS/EROS
    Maintainer
    Identifier C1220567953-USGS_LTA
    Data First Published 2019-09-20
    Language en-US
    Data Last Modified 2025-07-17
    Category AMI, geospatial
    Public Access Level public
    Bureau Code 026:00
    Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
    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 44e4623e-5584-4fef-b5a0-af3958265954
    Harvest Source Id 58f92550-7a01-4f00-b1b2-8dc953bd598f
    Harvest Source Title NASA Data.json
    Homepage URL https://cmr.earthdata.nasa.gov:443/search/concepts/C1220567953-USGS_LTA.html
    Metadata Type geospatial
    Old Spatial 130.0 54.666668 173.0 71.833336
    Program Code 026:001
    Source Datajson Identifier True
    Source Hash a560b51b6600518f322fb8cd2ff76e0865a6498e7567ffdeba30876fed3dac41
    Source Schema Version 1.1
    Spatial
    Temporal 1970-01-01T00:00:00Z/2022-01-17T00:00:00Z

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