{
    "identifier": "gov.noaa.ngdc.stp.geomag:1806",
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        "@type": "vcard:Contact",
        "fn": "Your contact point",
        "hasEmail": "mailto:[email protected]"
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    "programCode": [
        "010:000"
    ],
    "landingPage": "",
    "title": "Geomagnetic Observatory Database February 2004",
    "description": "The NOAA National Centers for Environmental Information (formerly National Geophysical Data Center) maintains an active database of worldwide geomagnetic observatory data to further the understanding of Earth magnetism and the Sun-Earth environment.Historically, magnetic observatories were established to monitor the secular change (variation), of the Earth's magnetic field, and this remains one of their most important functions. This generally involves absolute measurements sufficient in number to monitor instrumental drift and to produce annual means. Over 70 countries operate more than 200 observatories worldwide. The magnetic observatory data are crucial to the studies of secular change, investigations into the Earth's interior, navigation, communication, and to global modeling efforts. In addition to the continuously operating magnetic observatories, many countries make measurements at temporary magnetic stations (known as repeat stations), over a period of days every 5 - 10 years.The Earth's magnetic field is described by seven parameters. These are declination (D), inclination (I), horizontal intensity (H), vertical intensity (Z), total intensity (F) and the north (X) and east (Y) components of the horizontal intensity. By convention, declination is considered positive when measured east of north, inclination and vertical intensity positive down, X positive north, and Y positive east. The magnetic field observed on Earth is constantly changing.",
    "language": "",
    "distribution": [
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            "@type": "dcat:Distribution",
            "mediaType": "application\/json",
            "accessURL": "https:\/\/www.ncei.noaa.gov\/metadata\/geoportal\/\/rest\/metadata\/item\/gov.noaa.ngdc.stp.geomag%3A1806"
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        {
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    "bureauCode": [
        "010:04"
    ],
    "modified": "2025-11-19T15:45:19.308Z",
    "publisher": {
        "@type": "org:Organization",
        "name": "Your Publisher"
    },
    "theme": "",
    "keyword": [
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Forecasts",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Indices",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Geomagnetic Induction",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Anomalies",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Declination",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Inclination",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Magnetic Intensity",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Paleomagnetism",
        "EARTH SCIENCE > SOLID EARTH > Geomagnetism > Reference Fields",
        "Secular Change",
        "Magnetic Total Intensity",
        "Magnetic Declination",
        "Magnetic Observatory",
        "Magnetic Models",
        "Magnetic Survey",
        "Magnetospheric Science",
        "Global",
        "DOC\/NOAA\/NESDIS\/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce",
        "DOC\/NOAA\/NESDIS\/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce",
        "geoscientificInformation"
    ]
}