Detailed Gravimetric Geoid for the United States | Zendy

William E. Strange | Zendy; S. Vincent | Zendy; Richard H. Berry | Zendy; J. G. Marsh | Zendy

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Detailed Gravimetric Geoid for the United States

Author(s) -

William E. Strange,

S. Vincent,

Richard H. Berry,

J. G. Marsh

Publication year - 2011

Publication title -

geophysical monograph

Language(s) - English

Resource type - Book series

SCImago Journal Rank - 0.375

H-Index - 96

eISSN - 2328-8779

pISSN - 0065-8448

DOI - 10.1029/gm015p0169

Subject(s) - geoid , geodesy , undulation of the geoid , geodetic datum , geology , gravimetry , spherical harmonics , ocean surface topography , geophysics , physics , geotechnical engineering , quantum mechanics , reservoir modeling , measured depth

A detailed gravimetric geoid was computed for the United States using a combination of satellite-derived spherical harmonic coefficients and 1 by 1 deg mean gravity values from surface gravimetry. Comparisons of this geoid with astrogeodetic geoid data indicate that a precision of plus or minus 2 meters has been obtained. Translations only were used to convert the NAD astrogeodetic geoid heights to geocentric astrogeodetic heights. On the basis of the agreement between the geocentric astrogeodetic geoid heights and the gravimetric geoid heights, no evidence is found for rotation in the North American datum. The value of the zero-order undulation can vary by 10 to 20 meters, depending on which investigator's station positions are used to establish it.

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