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Detailed Reference Information |
Niebauer, T.M. and Faller, J.E. (1992). Continuous gravity observations using joint institute for laboratory astrophysics absolute gravimeters. Journal of Geophysical Research 97: doi: 10.1029/92JB00808. issn: 0148-0227. |
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We discuss two different 1-month gravity records taken with two different Joint Institute for Laboratory Astrophysics (JILA) gravimeters. These records were corrected for the effects of Earth tides, and ocean loading, local and global barametric effects, and polar motion. These data allowed precise determinations of the local air pressure admittance. We also obtained a value for the second-order gravimetric factor which agreed with the theretical value to about 0.3% where the predominant uncertainty is the ocean load modeling. The corrected noise spectra were white above 1 cycle/d with a spectral noise density of about 80 μGal/√Hz. We note that absolute gravimeters have a sensitivity to time varying gravity that is comparable to that obtained with superconducting relative gravimeters. The sensitivity of these data emphasizes that need for better modeling of ocean loads, air pressure effects, and even man-made environmental noise. ¿ American Geophysical Union 1992 |
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Abstract |
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Keywords
Geodesy and Gravity, Instruments and techniques, Geodesy and Gravity, Standards and absolute measurements |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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