地壳体应变异常及其映震效能分析

BULK STRAIN ANOMALIES OF CRUST AND ITS INFLUENCE ON REFLECTING CAPACITY OF EARTHQUAKE

摘要:

本文分析了几个体应变观测台站的资料,通过数学方法,提取可能与地震孕育有关的中短期应变趋势变化,计算了潮汐因子,然后选取一定的判别标准,识别其中的异常。通过震例检验表明,体应变异常变化与地震有一定的相关性。本文的数据处理方法在识别震前异常方面有一定效果,所提取的异常信息与地震发生在时间上有较好的对应关系。

Abstract:

Firstly,this paper analyzed the data of bulk strain observed from various stations.By the mathematic method,it extracted the mid-short term strain trend variations, which probably relate to the preparedness and occurrence of earthquakes,and calculated the tide factor, Then, the anomalous variations are identified by selecting a certain discrimination criterion. By verify-ing some earthquake cases,it showed that the data processing method proposed by this paper is quite efficient in extracting anomaly information which is of some correlation with earthquake in time sequence.