Earth tide and tilt detection by a ring laser gyroscope
Earth tide and tilt detection by a ring laser gyroscope
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通过环形激光陀螺仪检测地球潮汐和倾斜
DOI：
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发表时间：
2003
期刊：
影响因子：
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通讯作者：
G. Stedman
中科院分区：
文献类型：
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作者：
K. Schreiber;T. Klügel;G. Stedman
[1]在新西兰基督城地下30米C-Ⅱ环形激光器的Sagnac频率记录中，观测到一个月球潮汐周期为12小时25分的固体潮信号。它的振幅是地球自转信号的百万分之一，远远大于预期的十亿分之四十。倾斜仪的记录显示，这种放大有很大一部分是地球物理的，月球倾斜分量的振幅约为0.1-0.2 μrad，主要是因为班克斯半岛的海洋负荷。节理记录还显示了与环境压力和温度变化下的洞室变形和洞室倾斜中的长周期波相关的Sagnac频率的影响。
[1] An Earth tide signal at the lunar tidal period of 12 hours 25 min has been detected in the Sagnac frequency record of the C-II ring laser 30 m underground at Christchurch, New Zealand. Its amplitude, one part per million of the Earth rotation signal, is much greater than the value of 40 parts per billion expected. Tiltmeter records show that a substantial part of this amplification is geophysical, the lunar component of tilt having an amplitude of the order of 0.1–0.2 μrad, principally because of ocean loading of Banks Peninsula. The joint records also show effects on the Sagnac frequency associated with cavern deformation under ambient pressure and temperature change and with long-period waves in cavern tilt.