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
- 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:G01444
Other Access | |
Distribution Formats |
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Ordering Instructions | Ordering Instructions: Price information is available on request, or through the on-line store http:// ols.nndc.noaa.gov Prepay by check, money order, or bankcard There is a standard handling charge, with additional costs for special handling Order may be placed via fax, e-mail, regular mail, through the online store, or by 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 Point of Contact | Brian Meyer NOAA National Centers for Environmental Information 303-497-6125 Brian.Meyer@noaa.gov |
Time Period | Unknown to Unknown |
Spatial Reference System | urn:ogc:def:crs:EPSG::5715 |
Spatial Bounding Box Coordinates |
West:-130
East:-66
South:24
North:53
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Spatial Coverage Map |
Documentation links not available. |
Publication Dates |
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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. |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Place keywords | Global Change Master Directory (GCMD) Location Keywords
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Last Modified: 2017-09-25
For questions about the information on this page, please email:Brian.Meyer@noaa.gov