震级—频度关系的非线性特征  

RESERCH ON THE FUZZY FRACTAL CHARACTERISTICS OF SEISMIC PRECURSORS FOR GROUND FLUIDS BEFORE MEDIUM-STRONG EARTHQUAKES IN SHANDONG

作　　者：陈时军[1] 陶九庆[1] 王志才[1] 王健 梁更国[1] 

机构地区：[1]山东省地震局

出　　处：《地震研究》1997年第3期303-310,共8页Journal of Seismological Research

基　　金：山东省地震局合同制项目

摘　　要：在假设地震断裂系统具有分形特征前提下，推导出非线性震级—频度关系公式：ＬｏｇＮ＝ａ＋ｂΔＭ－Ｃ／ΔＭ，作为示例，用此公式对一些实际观测资料进行了最小二乘拟合，效果明显好于线性公式。和其它非线性公式对比，该公式具有明确的物理意义，并可方便地区分不同类型的地震断裂系统。The fuzzy fractal values of seismic precursors for ground fluids before the 1983 Heze earthquake of M=5 9 and the 1995 Changshan earthquake of M=5 2 are calculated by using fuzzy fractal method combining fuzzy set theory with fractal theory.The results show that fuzzy fractal values reflect structure variation characteristics of observation data of time sequence for seismic precursors,have some physical significance and provide a new method for extracting seismic anomalous information from complex precursor data of ground fludids.However,the variation characteristics of fuzzy fractaly values and seismic precusor aomalies for some observation items and at some stations should be analysed specifically.

关 键 词：地震 震级 频度关系 非线性特征 断层 

分 类 号：P315.9[天文地球—地震学]