Geomagnetic Observatory Database February 2004

Metadata Updated: May 29, 2014

The 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.

Access & Use Information

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.

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Dates

Metadata Date May 28, 2013
Metadata Created Date Aug 20, 2013
Metadata Updated Date May 29, 2014
Reference Date(s) Jan 01, 1972 (publication)
Frequency Of Update annually

Metadata Source

Harvested from NGDC - STP - Geomag - iso

Additional Metadata

Resource Type Dataset
Metadata Date May 28, 2013
Metadata Created Date Aug 20, 2013
Metadata Updated Date May 29, 2014
Reference Date(s) Jan 01, 1972 (publication)
Responsible Party DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Contact Email
Access Constraints Use Constraints: None, Access Constraints: No Constraints
Bbox East Long 180.000000
Bbox North Lat 90.000000
Bbox South Lat -90.000000
Bbox West Long -180.000000
Coupled Resource
Frequency Of Update annually
Guid gov.noaa.ngdc.stp.geomag:1806
Harvest Object Id 416fc3f2-ede1-4b3c-a77d-3fc018fa941c
Harvest Source Id 21ab3ced-499d-4f59-bb62-448fe06ef827
Harvest Source Title NGDC - STP - Geomag - iso
Licence While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
Metadata Language
Metadata Type geospatial
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True
Temporal Extent Begin 1800-01-01

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