ISO Table View Alternate Views: Get Data, FAQ, ISO Rubric, DOI Rubric, CSW, HTML, Components, XML

Metadata Identifier: gov.noaa.ngdc.stp.geomag:G10118

Aggregation Info | Bands | Citations | Constraints | Coverage Descriptions | Dimensions | Extents | Formats | Geographic Bounding Box
Georectified Information | Georeferenceable Information | Identifiers | Instruments | Mediums | OnlineResources | Operations
Platforms | Process Steps | Range Elements | Reference Systems | Responsible Parties | Series | Sources | Spatial Grids | Temporal Extents

MD_DataIdentification

Count Component Title Abstract
1 Geomagnetic Observatory Annual Means Data The National Geophysical Data Center / World Data Center, Boulder maintains an active database of worldwide geomagnetic observatory data. 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. While the current global network of geomagnetic observatories involves over 70 countries operating more than 200 observatories, the historic database includes observations from more than 600 observatories since the early 1800s. 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. 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.
Top

SV_Identification

none found
Top

CI_Citation

Count Component Title Date Citation Identifier
1 Geomagnetic Observatory Annual Means Data
  • 2006-01-01
1 NASA/GCMD Earth Science Keywords
    Top

    CI_Series

    none found
    Top

    CI_ResponsibleParty

    Count Component Individual Organization Position Email Role Linkage
    3 Justin Mabie Justin Mabie DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce Space and Terrestrial Weather Specialist Justin.Mabie@noaa.gov pointOfContact
    2 User Services DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce ngdc.info@noaa.gov originator
    Top

    CI_OnlineResource

    none found
    Top

    MD_Identifier or RS_Identifier

    Count Component Code
    1 G10118
    Top

    EX_Extent

    Bounding Box Temporal Extent
    Count Component Description West East North South Start End
    1 -180.0 180.0 89.0 -89.0 1813-01-01
    Top

    EX_GeographicBoundingBox

    Count Component West East North South
    1 -180.0 180.0 89.0 -89.0
    Top

    EX_TemporalExtent

    Count Component Start End
    1 1813-01-01
    Top

    MD_Format

    none found
    Top

    MD_Medium

    none found
    Top

    MD_Constraints

    Count Component Use Limitation
    1
    Top

    MD_ReferenceSystem

    none found
    Top

    MD_GridSpatialRepresentation

    none found
    Top

    MD_Georeferenceable or MI_Georeferenceable

    none found
    Top

    MD_Georectified or MI_Georectified

    none found
    Top

    MD_Dimension

    none found
    Top

    MD_CoverageDescription or MI_CoverageDescription

    Count Component Attribute Description Content Type
    1
    Top

    MD_Band or MI_Band

    Count Component Identifier Descriptor
    1 Declination (D) The angle made by the magnetic meridian and the true north meridian, considered positive east of north and negative west of north
    1 Inclination (I) The angle which the line of force at a point of observation makes with the horizontal plane, positive when directed downward
    1 Horizontal Intensity (H) The projection of the geomagnetic field vector on the horizontal plane, always positive
    1 Vertical Intensity (Z) The projection of the geomagnetic field vector on the vertical plane, positive when directed down
    1 Total Intensity (F) The scalar magnitude of the geomagnetic field vector, always positive
    1 North Component (X) The projection of the horizontal component (H) in the true meridian
    1 East Component (Y) The projection of the horizontal component on the true east direction, positive when directed eastward
    Top

    MI_RangeElementDescription

    none found
    Top

    MD_AggregateInformation

    none found
    Top

    LE_Source or LI_Source

    none found
    Top

    LE_ProcessStep or LI_ProcessStep

    none found
    Top

    MI_Operation

    Count Component Code Type Status Description
    1 G10118
    Top

    MI_Platform

    none found
    Top

    MI_Instrument

    none found
    Top