中强震与江苏新沂地震台地电阻率异常的关系研究

A Study on the Relation between Medium-strong Earthquakes and Ground Resistivity Anomalies of Xinyi Seismological Station of Jiangsu Province

运用速率法、滑动富氏法对江苏省新沂地震台1990年至1999年地电阻率观测资料进行了分析,研究了电阻率异常与江苏省及其邻近地区的中强震的关系。结果表明,从1994年到1997年之间发生的中强震,新沂地震台地电阻率3个测向有不同程度的异常与之对应。研究结果表明,资料异常呈现出的各向异性和其对应性与地球自转加速年份、孕震期的应力状态、震区构造、介质结构有关。

Analysis about ground resistivity observation data from 1990 to 1999 of Xinyi Seismological Station is made with the velocity method and Fourier slipping method. The relation between the ground resistivity anomalies and medium-strong earthquakes accrued in Jiangsu and its adjacent region from 1990 to 1999 is studied . The result show that resistivity anomalies appeared in all three components of Xinyi Station correspond, in different degree, to earthquakes occurred from 1994 to 1997. The anisotropism and correspondence of the data anomalies are related to years of the earth rotation accelerating , stress state in seismogenic period, seismo-tectonics of seismic area and media structure.