加卸载响应比在体应变固体潮中的应用  

APPLICATION OF RESPONSE RATIO OF LOAD AND UNLOAD TO BULK STRAIN EARTHTIDE

作　　者：张昭栋[1] 王秀芹[1] 董守德 

机构地区：[1]山东省地震局,中国济南250014

出　　处：《地震》1999年第3期217-222,共6页Earthquake

基　　金：地震科学联合基金会资助课题

摘　　要：从岩石的应变与应力的非线性响应分析了体应变固体潮加卸载响应比的物理机理， 给出了体应变固体潮加卸载响应比的计算方法，并以昌平和峰峰台的体应变观测值为例，计算了二台的体应变固体潮加卸载响应比。结果表明，在中强地震前存在增大变化。In this paper, based on the nonlinear response of rock strain and stress, we have analized the physical mechanism of loading and unloading response ratio of the earth tides of bulk strain, and the calculation method of loading and unloading response ratio of the earth tides of bulk strain is given. We took the observed values of the bulk strain at the Changping and Fenfeng stations as example, calculated the loading and unloading response ratio of the earth tides of bulk strain. Before the moderately strong earthquake the response ratio has shown the variation of increase.

关 键 词：体应变 固体潮 加卸载响应比 地震前兆 

分 类 号：P315.7[天文地球—地震学]