Principal Hawaiian Islands Geoid Heights (GEOID96)
This 2' geoid height grid for the Principal Hawaiian Islands is distributed as a GEOID96
model. The computation used 61,000 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)). By means of a Fast Fourier Transform (FFT) technique,
high frequency corrections were made to an underlying EGM96 geopotential model through
a remove, compute, and restore process. 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. Unlike the grid for the conterminous United
States, this GEOID96 grid does not incorporate GPS on leveled benchmarks. This model
is a gravimetric geoid in a geocentric, ITRF94(1996.0) reference frame. It is necessary
to subtract 12.0 cm from these values to obtain the geoid undulation between the best-fit
global geopotential surface and the GRS80 ellipsoid (both expressed in a tide free
system). Additional information is available at: http://www.ngs.noaa.gov/GEOID/geoid.html
We are particularly grateful 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:G01428
Other Access | |
Distribution Formats |
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Ordering Instructions | Ordering Instructions: 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:-161
East:-154
South:18
North:24
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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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Publishers |
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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 | Getty Thesaurus of Geographic Names
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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