Submarine measurement of the Newtonian gravitational constant

Details Submarine measurement of the Newtonian gravitational constant Submarine measurement of the Newtonian gravitational constant

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..67.3051z&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 67, Nov. 25, 1991, p. 3051-3054. Research supported by U.S. Navy and DOE.

Physics

29

Gravimetry, Gravitational Constant, Oceanography, Earth Gravitation, Gravimeters, Gravitational Fields, Submarines

Scientific paper

The Newtonian gravitational constant is measured using the ocean as an attracting mass and a research submersible as a platform for gravity measurements. Gravitational acceleration was measured along four continuous profiles to depths of 5000 m with a resolution of 0.1 mGal. These data, combined with satellite altimetry, sea-surface and seafloor gravity measurements, and seafloor bathymetry, yield an estimate of G = (6.677 +/-0.013) x 10 exp 11 cu m/s squared kg; the fractional uncertainty is 2 parts in 1000. Within this accuracy, the submarine value for G is consistent with laboratory determinations.

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