Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....9712427n&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. B9, Aug. 10, 1992, p. 12,427-12,435. Research supported by NIST.
Astronomy and Astrophysics
Astrophysics
2
Atmospheric Pressure, Earth Tides, Gravimeters, Ocean Surface, Polar Wandering (Geology), Water Waves, Data Bases, Data Recording, Laser Interferometry, Michelson Interferometers, Noise Spectra
Scientific paper
Two different 1-month gravity records taken with two different Joint Institution for Laboratory Astrophysics gravimeters are discussed. These records were corrected for the effects of earth tides, ocean loading, local and global barometric effects, and polar motion. These data allowed precise determinations of the local air pressure admittance. Also obtained is a value for the second-order gravimetric factor which agreed with the theoretical value to about 0.3 percent where the predominant uncertainty is the ocean load modeling. The corrected noise specta were white above 1 cycle/d with a spectral noise density of about 80 microGal/sq rt Hz.
Faller James E.
Niebauer Timothy M.
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