Alaska North-South Deflections (DEFLEC96)
This 2' x 4' surface deflection of the vertical grid for Alaska is the DEFLEC96 model.
The computation used about 1.1 million 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 DefenseMapping 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 1971 (IGSN71). The deflections
are referred to the Geodetic Reference System 1980 (GRS80) ellipsoidal normals. The
curvature of the plumb line correction has been applied.Additional information is
available at:http://www.ngs.noaa.gov/ We are particularlygrateful to NGA (former National
Imagery and Mapping Agency) for their assistance 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:G01422
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Distribution Formats |
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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 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:-180
East:-126
South:49
North:72
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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 |
Supplemental Information |
Note that for the Alaska Geoid96 data the West Bounding Coordinate is actually -188
degrees.
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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