广义地震应变能释放的多重分形特征  

MULTIFRACTAL CHARACTERISTICS OF GENERAL STRESS RELEASE (GSR) OF EARTHQUAKES

作　　者：陈时军[1] David Harte 王丽凤[3] 马丽[3] 

机构地区：[1]山东省地震局,中国济南250014 [2]惠灵顿PO Box 12-649新西兰统计学联合会 [3]中国地震局分析预报中心,中国北京100036

出　　处：《地震学报》2003年第2期182-190,共9页Acta Seismologica Sinica

基　　金：国家自然科学基金(40074013);新西兰Marsden基金(00-SRA-002-MIS)资助项目

摘　　要：利用基于小波变换的多重分形谱估计方法,研究了以中国东西部地区为代表的板内地震活动和以新西兰、日本为代表的板缘地震活动广义应变能释放的多重分形特征。结果表明,中国东、西部地震活动广义应变能释放的多重分形特征有明显差别,新西兰与日本的地震活动广义应变能释放的多重分形特征也有明显不同;地震活动的多重分形特征与构造的复杂程度有关。Using multifractal spectrum estimating method based on the wavelet, the multifractal characteristics of GSR of earthquakes in China, Japan and New Zealand regions have been studied. It is shown that the multifractal spectra of GSR are obviously different in inter- and intra- plate regions. Moreover, though Japan and New Zealand are all located at the boundary of plates, West and East China are all characterized of continental tectonic structure, the multifractal spectra of GSR for both the two regions are also different. Further analysis shows that the natures of multifractal spectra of GSR are somehow related to the complexity of tectonics.

关 键 词：小波变换 多重分形 广义应变能释放 估计 

分 类 号：P315.727[天文地球—地震学]