Within the NOAA National Ocean Service (NOS), the NOAA National Geodetic Survey (NGS) has a federal mandate to provide accurate positioning, including heights, to all federal non-military mapping activities in the USA. In 2007, the NGS embarked on the Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Project, one of the most ambitious projects in the history of the agency. The gravity-based vertical datum resulting from this project is accurate at the 2 cm level where possible for much of the country. Available data include airborne and terrestrial survey information, gravity data, and gravity-based geoids or datums.
About this Dataset
Title | Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Data Products |
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Description | Within the NOAA National Ocean Service (NOS), the NOAA National Geodetic Survey (NGS) has a federal mandate to provide accurate positioning, including heights, to all federal non-military mapping activities in the USA. In 2007, the NGS embarked on the Gravity for the Redefinition of the American Vertical Datum (GRAV-D) Project, one of the most ambitious projects in the history of the agency. The gravity-based vertical datum resulting from this project is accurate at the 2 cm level where possible for much of the country. Available data include airborne and terrestrial survey information, gravity data, and gravity-based geoids or datums. |
Modified | 2024-08-02T17:50:22.026Z |
Publisher Name | N/A |
Contact | N/A |
Keywords | Earth Science > Solid Earth > Geodetics/Gravity > Gravity , INFOTERRA > Subject disciplines > Geophysics > Geophysics , NGDA , National Geospatial Data Asset , Elevation Theme , ICSU-WDS > International Council for Science - World Data System , Geographic Region > Global Ocean , Vertical Location > Sea Floor , 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 , oceans |
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