Antarctic marine gravity field from high-density satellite altimetry

Details Antarctic marine gravity field from high-density satellite altimetry Antarctic marine gravity field from high-density satellite altimetry

May 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992geoji.109..437s&link_type=abstract

Geophysical Journal International (ISSN 0956-540X), vol. 109, no. 2, May 1992, p. 437-448.

Physics

46

Antarctic Regions, Celestial Geodesy, Earth Gravitation, Gravity Anomalies, Ocean Bottom, Satellite Altimetry, Geodetic Satellites, Geoids, Geosat Satellites, Gravimetry, Gravitational Fields, Laplace Equation

Scientific paper

High-density (about 2-km profile spacing) Geosat/GM altimetry profiles were obtained for Antarctic waters (6-deg S to 72 deg S) and converted to vertical gravity gradient, using Laplace's equation to directly calculate gravity gradient from vertical deflection grids and Fourier analysis to construct gravity anomalies from two vertical deflection grids. The resultant gravity grids have resolution and accuracy comparable to shipboard gravity profiles. The obtained gravity maps display many interesting and previously uncharted features, such as a propagating rift wake and a large 'leaky transform' along the Pacific-Antarctic Rise.

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