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Calibration of a superconducting gravimeter by comparison with an absolute gravimeter FG5 in Boulder

被引：46
作者：
Francis, O
Niebauer, TM
Sasagawa, G
Klopping, F
Gschwind, J
机构：
[1] Observ Royal Belgique, B-1180 Brussels, Belgium
[2] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA
[3] NOAA, Natl Ocean Serv, Geosci Lab, Off Ocean & Earth Sci, Longmont, CO 80503 USA
[4] Microg Solut Inc, Erie, CO 80516 USA
来源：
GEOPHYSICAL RESEARCH LETTERS | 1998年 / 25卷 / 07期
关键词：
D O I：
10.1029/98GL00712
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
This paper reports the results of a calibration of a superconducting gravimeter using simultaneous measurements of Earth tides with an absolute gravimeter. Nine consecutive days of observations were made with both the C024 superconducting gravimeter and the FG5-202 absolute gravimeter at the NOAA Table Mountain Gravity Observatory near Boulder, Colorado. The precision of the calibration factor is better than 0.1%. The calibration factor obtained in this fashion agrees well with that obtained from a moving platform. This experiment provides a noise estimate for both the superconducting and absolute gravimeter. In addition, the local air pressure admittances of both instruments compare well with a value close to -0.35 mu Gal/mbar.
引用
收藏
页码：1075 / 1078
页数：4
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