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Mexico Terrain Corrected Free Air Anomalies (97)

This 2' gravity anomaly grid for Mexico, North-Central America and the Western Caribbean Sea is NOT the input data set used in the development of the MEXICO97 model. This gravity grid represents one million gravity measurements held in the NGS gravity database as of March 1997. The data used in this grid have NOT been augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency), but have been augmented by 2'x2' satellite-altimeter-derived gravity anomalies computed by Sandwell and Smith (1997). Please note that the MEXICO97 geoid model does contain the NGA (former National Imagery and Mapping Agency) contributions. Large data gaps south of 20 degrees North latitude were filled with15'x15' gravity values derived from the EGM96 global geopotential model. The gravity values are based on the International Gravity Standardization Net 1971 (IGSN71). The geoid heights are referred to the Geodetic Reference System 1980 (GRS80) ellipsoid, centered at the origin of the International Terrestrial Reference Frame 1994 (ITRF94(1996.0)). Additional information is available at:http://www.ngs.noaa.gov

Use Constraints: If you use this data, please cite the National Geophysical Data Center and the originator of the data.

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    Distribution Formats
    • Binary
    Distributor DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
    Point of Contact Susan McLean
    DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    (303) 497-6478
    Susan.McLean@noaa.gov
    Documentation links not available.
    Originator
    • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
    Publisher
    • DOC/NOAA/NESDIS/NGDC - National Geophysical Data Center
    Date(s)
    • publication: 1999-01-01
    Edition: 1999 Edition
    Dataset Progress Status Complete
    Data Update Frequency: Irregular
    Purpose: To provide easy access to global and regional gravity data and related models for scientific studies.
    Time Period:  to 
    Spatial Reference System: urn:ogc:def:crs:EPSG::5715
    Spatial Bounding Box Coordinates:
    N: 35
    S: 12
    E: -73
    W: -121
    Spatial Coverage Map:
    Themes
    • EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Control Surveys
    • EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Gravitational Field
    • EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Gravity
    • EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Reference Systems
    • EARTH SCIENCE>SOLID EARTH>Geodetics/Gravity>Satellite Orbits
    • Absolute Gravity
    • Bouguer Gravity
    • Free Air Anomaly
    • Gridded Gravity
    • Land Gravity
    • Observed Gravity
    • WDC/SEG, BOULDER>World Data Center for Solid Earth Geophysics, Boulder
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Places
    • Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea
    • Continent>North America>Mexico
    Use Constraints
    • Use Constraints: If you use this data, please cite the National Geophysical Data Center and the originator of the data.
    Access Constraints
    • Access Constraints: None
    Fees
    • Depends on the data set
    Source Datasets
    • Mexico Terrain Corrected Free Air Anomalies (97)
      • Description of Source: Source Contribution: Gravity survey data Source Type: varies
      • Temporal extent used:   to 
    Lineage Statement Lineage statement not available.
    Processor
    • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
    Processing Steps
    • All data were processed by the source before being forwarded to the National Geophysical Data Center

    Metadata Last Modified: 2012-10-26

    For questions about the information on this page, please email: Brian.Meyer@noaa.gov