【摘要】 根据Allegre的地壳介质破裂的尺度理论研究了甘肃地区近期3次中强地震前两种地震学前兆(地震空间相关长度和尾波Qc值)的变化特征。结果表明,在3次地震前这两种参数都表现出增长的特征,并可用幂次率关系拟合。更多还原

【Abstract】 In this paper we studied the characteristics of two seismological precursors(seismic spatial correlation length and coda Qc) associated with three moderate-strong earthquakes occurred in Gansu province,China,based on Allegre′s scale-rule theory of rock fracture.The results show that an increasing trends of seismic spatial correlation length and coda Qc appeared before the three earthquakes.A power exponent relation is used to fit the increasing variation form of these two parameters.更多还原