昌平台钻孔应变固体潮调合分析  

Harmonic analysis of earth tide of borehole strain data observed at Changping station

作　　者：王勇[1] 戴建华 段立新[2] 

机构地区：[1]中国地震局地壳应力研究所,北京100085 [2]河北省怀来地震台,河北怀来075400

出　　处：《地震》2000年第2期107-110,共4页Earthquake

摘　　要：介绍了体应变观测潮汐因子和勒夫数 h2 之间的线性关系 ,h2 的变化幅度较体应变观测潮汐因子震前异常变化大 7.5倍。同时 ,昌平台剪应变观测潮汐因子 O1波与体应变观测潮汐因子M2 波震前异常有较好的一致性 ,研究钻孔应变观测潮汐因子的变化有可能是取得地震前兆的有效途径之一。In this paper,we presented the linear relation between tide factor and Love numberh2 . The variational range ofh2 is 7.5times larger than anomalies of tide factor of body strain prior to earthquakes.The changes in tide factor of O1 wave of shear strain is well consistent with that in M2 wave tide factor of body strain prior to earthquakes at Changping Station. It may be one of the useful methods for extracting anomalies before earthquakes to study the change of tide factor of borehole strain.

关 键 词：潮汐因子 体应变 剪应变 固体潮 地震前兆 

分 类 号：P315.7[天文地球—地震学] P183.5[天文地球—固体地球物理学]