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PR/VI North-South Deflections (DEFLEC96)

This 2' surface deflection of the vertical grid for Puerto Rico and the Virgin Islands is distributed as the DEFLEC96 model. The computation used about 26,000 terrestrial and marine gravity data held in the National Geodetic Survey gravity data base in July 1996. These data were augmented by gravity data contributions from NGA (former National Imagery and Mapping Agency (former Defence Mapping Agency)). The deflections were obtained by numerical differentiation of cubic spline models along the meridians of the GEOID96 grid. The gravity values are based on the International Gravity Standardization Net 1971IGSN71). The deflections are referred to theGeodetic Reference System 1980 (GRS80) ellipsoidal normals. The curvature of the plumbline correction has been applied. We are particularly grateful to NGA (former National Imagery and Mapping Agency) for theirassistance and their data contributions.

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: 21
    S: 15
    E: -64
    W: -68
    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>Virgin Islands
    • Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea>Puerto Rico
    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
    • PR/VI North-South Deflections (DEFLEC96)
      • 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