摘要
通过气压变化对重力观测的影响和大气潮对重力固体潮的负荷效应二方面的研究 ,得出将 GS型重力仪置于密封装置 ,能使气压的影响量降低 1个数量级。谱分析结果表明 ,大气潮使S1波的振幅增大 1 0 % ,引起相位偏差约 1 0°,使 K1波和 S2 波的振幅分别增大 0 .2 %和 0 .37% ,而对其他主波的影响不大 。
By means of studying the influence of atmospheric pressure variation on gravity mea- surementand the loading effectofearth tide,itis inferred thatthe influence ofatmospher- ic pressure may decrease by one orderof magnitude,if GSgravimeter is placed in the con- fined container.Spectral analysis shows that atmospheric tide may increase the amplitude 1 0 % for wave S1 ,and increase0 .2 % and0 .37% for waves K1 and S2 .The few influences on other main waves may be neglectin use.
出处
《地震》
CSCD
北大核心
1998年第3期281-285,共5页
Earthquake
