Oceanic Tidal Loadings Estimated from Gravity Observations in Kyoto and Bandung
Oceanic Tidal Loadings Estimated from Gravity Observations in Kyoto and Bandung
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根据京都和万隆重力观测估算的海洋潮汐载荷
DOI：
10.11366/sokuchi1954.47.261
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
Y. Fukuda
中科院分区：
文献类型：
--
作者：
A. Mukai;S. Takemoto;T. Higashi;Y. Fukuda
日本京都和印度尼西亚万隆利用超导重力仪对重力变化进行了常规观测。京都和万隆被太平洋和其他海洋包围。由于海洋负载潮汐引起的重力变化在每个站都有可检测到的信号水平。我们可以利用海洋加载潮汐的观测值和预期值之间的差异来研究地壳和上地幔的粘度。海洋潮汐负荷的观测相位与潮汐成分主要部分的预测相位偏差约10度，但由于地球粘度导致的相位滞后预计为0.1度或更小。
Routine observations of gravity changes have been performed at Kyoto, Japan and Bandung, Indonesia by employing superconducting gravimeters. Kyoto and Bandung are surrounded by the Pacific Ocean and other oceans. Gravity changes due to oceanic loading tides have a detectable signal level at each station. We can investigate viscosity of the crust and the upper mantle using differences between observed values and expected values of oceanic loading tides. Observed phase in the oceanic tidal loading has a deviation about 10 degrees from the predicted phase in major parts of tidal constituents, though phase lag due to viscosity in the Earth is expected to be 0.1 degree or less.