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Metadata Identifier: gov.noaa.ngdc.mgg.geophysics:G01444

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 U.S. Terrain Corrected Free Air Anomalies (96) This 2' gravity anomaly grid for the conterminous United States is NOT the input data set used in development of the GEOID96 model. This gravity grid models the 1.7 million terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996. The data used in this grid have NOT been augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). Please note that the GEOID96 model itself does contain the NGA (former National Imagery and Mapping Agency) contributions. These gravity values are based on the International Gravity Standardization Net 1971 (IGSN71). Terrain corrected, atmospherically corrected, Bouguer anomalies were computed with respect to the Geodetic Reference System 1980 (GRS80) using NAD83 and NAVD88 coordinates. Terrain corrections were computed by FFT integration of 30" digital elevation data throughout the United States. These complete Bouguer anomalies were gridded by splines in tension. The free air anomaly grid was obtained by restoring the Bouguer plate with a 2' mean elevation grid. Additional information is available at http://www.ngs.noaa.gov/GEOID/geoid.html
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SV_Identification

none found
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CI_Citation

Count Component Title Date Citation Identifier
1 Mean Sea Level depth
    2012-08-10
2 U.S. Terrain Corrected Free Air Anomalies (96)
    1999-01-01
1 Uncontrolled Keywords
    Unresolved Xlinks
    NASA/GCMD Science Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[1]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
    GCMD Location Keywords at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:descriptiveKeywords[4]/gmd:MD_Keywords[1]/gmd:thesaurusName[1]
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    CI_Series

    none found
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    CI_ResponsibleParty

    Count Component Individual Organization Position Email Role Linkage
    1 resourceProvider http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::5715
    1 Susan Mclean (processor) processor
    2 Brian Meyer Brian Meyer DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce Brian.Meyer@noaa.gov pointOfContact
    2 NCEI (publisher) DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce publisher
    1 User Services (originator) DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce User Services ngdc.info@noaa.gov originator
    1 User Services DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce User Services ngdc.info@noaa.gov distributor
    Unresolved Xlinks
    EPSG Registry at: /gmi:MI_Metadata/gmd:referenceSystemInfo[1]/gmd:MD_ReferenceSystem[1]/gmd:referenceSystemIdentifier[1]/gmd:RS_Identifier[1]/gmd:authority[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[2]
    Susan Mclean at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:pointOfContact[1]
    Susan Mclean (processor) at: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:processStep[1]/gmi:LE_ProcessStep[1]/gmd:processor[1]
    National Geodetic Survey at: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:source[1]/gmd:LI_Source[1]/gmd:sourceCitation[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
    Anna Milan at: /gmi:MI_Metadata/gmd:metadataMaintenance[1]/gmd:MD_MaintenanceInformation[1]/gmd:contact[1]
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    CI_OnlineResource

    Count Component Linkage Name Description Function
    1 http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::5715 MSL depth GML for Vertical CRS in EPGS Registry. information
    1 http://www.ngdc.noaa.gov/mgg/fliers/se-0703.html
    1 http://www.ngdc.noaa.gov/mgg/gravity/1999/document/html/tablegri.html
    1 http://www.ngdc.noaa.gov/mgg/gravity/1999cd.html
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    MD_Identifier or RS_Identifier

    Count Component Code
    1 urn:ogc:def:crs:EPSG::5715
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    EX_Extent

    Bounding Box Temporal Extent
    Count Component Description West East North South Start End
    1 -130 -66 53 24
    1
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    EX_GeographicBoundingBox

    Count Component West East North South
    1 -130 -66 53 24
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    EX_TemporalExtent

    Count Component Start End
    2
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    MD_Format

    Count Component Name Version specification
    1 Binary
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    MD_Medium

    Count Component Name mediumFormat mediumNote
    1 cdRom iso9660 iso9660
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    MD_Constraints

    Count Component Use Limitation
    Unresolved Xlinks
    NOAA Disclaimer at: /gmi:MI_Metadata/gmd:identificationInfo[1]/gmd:MD_DataIdentification[1]/gmd:resourceConstraints[1]
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    MD_ReferenceSystem

    Count Component Code Authority Title
    1 MSL urn:ogc:def:crs:EPSG::5715 Mean Sea Level depth
    EPSG Registry at Xpath: /gmi:MI_Metadata/gmd:referenceSystemInfo[1]/gmd:MD_ReferenceSystem[1]/gmd:referenceSystemIdentifier[1]/gmd:RS_Identifier[1]/gmd:authority[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[2]
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    MD_GridSpatialRepresentation

    Count Component Number of Dimensions Cell Geometry Code
    1 2 area
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    MD_Georeferenceable or MI_Georeferenceable

    none found
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    MD_Georectified or MI_Georectified

    none found
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    MD_Dimension

    Count Component Name Code Size
    1 row 871
    1 column 1921
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    MD_CoverageDescription or MI_CoverageDescription

    Count Component Attribute Description Content Type
    1
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    MD_Band or MI_Band

    Count Component Identifier Descriptor
    1 Gravity grid value Value, in milligals of an observed gravity station value, after various corrections have been applied to the value.
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    MI_RangeElementDescription

    none found
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    MD_AggregateInformation

    none found
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    LE_Source or LI_Source

    Count Component Title Date Description
    1 U.S. Terrain Corrected Free Air Anomalies (96) Source Contribution: Gravity survey data Source Type: varies
    National Geodetic Survey at Xpath: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:source[1]/gmd:LI_Source[1]/gmd:sourceCitation[1]/gmd:CI_Citation[1]/gmd:citedResponsibleParty[1]
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    LE_ProcessStep or LI_ProcessStep

    Count Component DateTime Description
    1 All data were processed by the source before being forwarded to the National Geophysical Data Center
    Susan Mclean (processor) at Xpath: /gmi:MI_Metadata/gmd:dataQualityInfo[2]/gmd:DQ_DataQuality[1]/gmd:lineage[1]/gmd:LI_Lineage[1]/gmd:processStep[1]/gmi:LE_ProcessStep[1]/gmd:processor[1]
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    MI_Operation

    none found
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    MI_Platform

    none found
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    MI_Instrument

    none found
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