PR/VI East-West 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 bygravity data contributions from NGA (former National Imagery and Mapping Agency) (formerDefense Mapping Agency).The deflections wereobtained by numerical differentiation of cubicspline models along the parallels of the GEOID96grid. The gravity values are based on theInternational Gravity Standardization Net 1971IGSN71). The deflections are referred to in theGeodetic Reference System 1980 (GRS80)ellipsoidal normals. The curvature of the plumbline correction has been applied. We areparticularly 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.
  • ID not available.
gov.noaa.ngdc.mgg.geophysics:G01436
Other Access
Distribution Formats
  • Binary
Ordering Instructions Ordering Instructions: Price information is available upon request. Prepay by check, money order or bank card. There is a standard handling charge, with additional costs for special handling. Orders may be placed via fax, email, regular mail or telephone. Custom Order Process: Contact Data Center for information.
Distributor User Services
DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
303-497-6826
ngdc.info@noaa.gov
Dataset No POCs available for this dataset
Time Period Unknown to Unknown
Spatial Reference System urn:ogc:def:crs:EPSG::5715
Spatial Bounding Box Coordinates
N: 21
S: 15
E: -64
W: -68
Spatial Coverage Map
Documentation links not available.
Publication Dates
  • publication: 1999-01-01
Edition 1999 Edition
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Irregular
Purpose To provide easy access to global and regional gravity data and related models for scientific studies.
Dataset Citation
  • Use Constraints: If you use this data, please cite the National Geophysical Data Center and the originator of the data.
Originators
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Publishers
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • 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
Uncontrolled Keywords
  • Absolute Gravity
  • Bouguer Gravity
  • Free Air Anomaly
  • Gridded Gravity
  • Land Gravity
  • Observed Gravity
Data Center keywords
  • DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Place keywords Global Change Master Directory (GCMD) Location Keywords
  • Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea>Virgin Islands
  • Ocean>Atlantic Ocean>North Atlantic Ocean>Caribbean Sea>Puerto Rico
Project keywords Global Change Master Directory (GCMD) Project Keywords
  • ICSU-WDS > International Council for Science - World Data System
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
Lineage information for: dataset
Processing Steps
  • All data were processed by the source before being forwarded to the National Geophysical Data Center
Source Datasets
  • PR/VI East-West Deflections (DEFLEC96)
    Last Modified: 2017-09-25
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