SiZer for exploration of inhomogeneous structure in temporal distribution of earth-quakes  

作　　者：陈时军 贾庆华 马丽 

机构地区：[1]Earthquake Administration of Shandong Province Ji'nan 250014, China [2]Earthquake Administration of Guangdong Province Guangzhou 510070, China [3]Institute of Earthquake Science, China Earthquake Administration Beijing 100036, China

出　　处：《Acta Seismologica Sinica(English Edition)》2005年第5期78-87,共10页

基　　金：Natural Science Foundation of Shandong Province (Y2002E01), Key Project for Earthquake Prevention and Disaster Mitigation in Shandong (SD10503-02-05) and Project of China-Greece International Cooperation of Science and Technology from 2003 to 2005.

摘　　要：In this paper, the inhomogeneous structure of generalized seismic strain release time series (GSSRTS) of earth- quakes in East, West China and their subtectonic regions as Xinjiang, Qinghai-Xizang (Tibetan) Plateau, Northeast China, North China, South China and Taiwan have been analyzed by using the method of significant analysis on zero crossings of derivatives (SiZer). Results show that when index η for estimating GSSRTS is close to zero and bandwidth is large enough, GSSRTSs feature significant increasing in Xinjiang, Northeast China, South China and Taiwan tectonic regions and decreasing in Qinghai-Xizang (Tibetan Platean) and North China tectonic regions from January 1, 1970 to January 1, 2000. While with the dwindling of bandwidth GSSRTSs in all the above tec- tonic regions characterize clustering, that is to say, significant increasing and decreasing emerge alternatively. When η is large enough, GSSRTSs would have no significant statistical variation in most of above tectonic regions except Qinghai-Xizang (Tibetan Platean) and Taiwan where significant increasing or decreasing hold in several time intervals within limited bandwidths.In this paper, the inhomogeneous structure of generalized seismic strain release time series (GSSRTS) of earth- quakes in East, West China and their subtectonic regions as Xinjiang, Qinghai-Xizang (Tibetan) Plateau, Northeast China, North China, South China and Taiwan have been analyzed by using the method of significant analysis on zero crossings of derivatives (SiZer). Results show that when index η for estimating GSSRTS is close to zero and bandwidth is large enough, GSSRTSs feature significant increasing in Xinjiang, Northeast China, South China and Taiwan tectonic regions and decreasing in Qinghai-Xizang (Tibetan Platean) and North China tectonic regions from January 1, 1970 to January 1, 2000. While with the dwindling of bandwidth GSSRTSs in all the above tec- tonic regions characterize clustering, that is to say, significant increasing and decreasing emerge alternatively. When η is large enough, GSSRTSs would have no significant statistical variation in most of above tectonic regions except Qinghai-Xizang (Tibetan Platean) and Taiwan where significant increasing or decreasing hold in several time intervals within limited bandwidths.

关 键 词：significant analysis on zero crossings of derivatives (SiZer) nonparametric fit generalized seis- mic strain release time series (GSSRTS) subtectonic regions in China 

分 类 号：P315.5[天文地球—地震学]