Geomagnetic Observatory Database February 2004
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.
Cite this dataset when used as a source.
- ID not available.
gov.noaa.ngdc.stp.geomag:1806
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Distribution Formats |
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Distributor | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Dataset Point of Contact | Justin Mabie Space and Terrestrial Weather Specialist DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce (303) 497-6135 Justin.Mabie@noaa.gov |
Time Period | 1800-01-01 to Present |
Spatial Bounding Box Coordinates |
West:-180.000000
East:180.000000
South:-90.000000
North:90.000000
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Spatial Coverage Map |
Documentation links not available. |
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Edition | First |
Dataset Progress Status | Under development - data is currently in the process of being created |
Data Update Frequency | Annually |
Supplemental Information |
Formally FE 17, 119, 626. Entry_ID G01152
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Purpose | Provide information for research and surveyors |
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Theme keywords | NASA/GCMD Earth Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords | NASA/GCMD Location Keywords
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Last Modified: 2015-09-18
For questions about the information on this page, please email:Justin.Mabie@noaa.gov