Absolute gravity measurements in California, 1984-1989

Details Absolute gravity measurements in California, 1984-1989 Absolute gravity measurements in California, 1984-1989

Feb 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991jgr....96.2501s&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 96, Feb. 10, 1991, p. 2501-2513.

Physics

3

Earth Crust, Gravimeters, Gravitational Constant, Michelson Interferometers, California, Statistical Analysis

Scientific paper

Repeated absolute gravity measurements have been made at 12 sites in California between 1984.3 and 1989.7. As determined in laboratory tests, the instrument used has an estimated accuracy of 10 microgal (approximately 10 to the -8th g). The repeatability of the measurements is consistent with this accuracy assessment. No gravity changes above the limits set by instrumental uncertainty and environmental noise are observed during this period; the field observations provide upper limits on the rates of secular gravity changes which could be attributed to crustal deformation with a resolution corresponding to vertical displacement rates of 1-2 cm/yr.

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