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    • One-second USGS Guam (GUA) magnetic observatory data collected before 2013

    Metadata Updated: January 21, 2026

    The USGS Geomagnetism Program operates a network of magnetic observatories that collect vector and scalar magnetometer data for use in Earth main-field modeling, geophysics research, space physics research, and space weather hazard assessment and mitigation. Until mid-2011, only 1-minute time resolution magnetic field measurements were archived with the INTERMAGNET consortium following international magnetic observatory standards. 1-second time resolution magnetic field measurements, which had already been collected by all the USGS observatories for up to almost a decade prior, started being archived with INTERMAGNET on June 13, 2011, or July 27, 2012 in the case of the more recently constructed Deadhorse (DED) magnetic observatory. This data release contains 1-second time resolution magnetic field measurements collected up through the end of 2012, after which time 1-second data from USGS magnetic observatories may be obtained from INTERMAGNET. There is some overlap between data in this release and those data archived with INTERMAGNET. Any discrepancies that may exist between these two data sources should resolve in favor of INTERMAGNET. GUA-specific notes: - some filenames originally and mistakenly identified the Guam observatory as "GUM", not "GUA". - some filenames originally possessed with a ".sec" extension and were renamed to ".raw"

    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 11, 2026
    Metadata Updated Date January 21, 2026

    Metadata Source

    Harvested from DOI USGS DCAT-US

    Other Data Resources

    Additional Metadata

    Resource Type Dataset
    Metadata Created Date January 11, 2026
    Metadata Updated Date January 21, 2026
    Publisher U.S. Geological Survey
    Maintainer
    Identifier http://datainventory.doi.gov/id/dataset/USGS_6333789fd34e900e86c6251b
    Data Last Modified 2023-01-25T00:00:00Z
    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
    Datagov Dedupe Retained 20260121062710
    Harvest Object Id 9e7e21dc-234c-412c-9c96-d74413fc37d8
    Harvest Source Id 2b80d118-ab3a-48ba-bd93-996bbacefac2
    Harvest Source Title DOI USGS DCAT-US
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": 144.85940, 13.57950, 144.85940, 13.59950, 144.87940, 13.59950, 144.87940, 13.57950, 144.85940, 13.57950}
    Source Datajson Identifier True
    Source Hash 2bd4bebbee1a88661a90afd5599bbf5413253d5226f35e21d476f4526a104668
    Source Schema Version 1.1
    Spatial {"type": "Polygon", "coordinates": 144.85940, 13.57950, 144.85940, 13.59950, 144.87940, 13.59950, 144.87940, 13.57950, 144.85940, 13.57950}

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