鄂西及邻区地震时空丛集的物理分形及R/S分析  

PHYSICAL FRACTAL AND R/S ANALYSIS OF TIME AND SPACE CLUSTERING OF EARTHQUAKES IN WESTERN HUBEI AND ITS SURROUNDING AREAS

作　　者：刘志[1] 姚运生[1] 

机构地区：[1]中国地震局地震研究所,武汉430071

出　　处：《大地测量与地球动力学》2012年第1期13-16,共4页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金重点项目(40730317);中国长江三峡工程开发总公司科技项目(SXSN-2377)

摘　　要：运用物理分形和自仿射R/S分析方法,对鄂西及邻区历史地震(M≥4.5)和1970—2010年间地震(M≥1.0)进行分析,得到了各子震级的自然周期、分维值和无标度区间,并求出了地震频度序列的H值(H=0.79)和时间间隔序列的H值(H=0.87);揭示了该区地震活动的自相似性和层次结构。The historical earthquake catalogues（M≥4.5） western Hubei and its surrounding areas are analyzed with the and 1970--2010 earthquake catalogues（M≥ 1.0） in methods of physical fractal and R/S analysis. Accordingly, the natural cycle, fractal dimension and fractal scale-less range form every subset of small earthquakes are obtained, and the Hurst exponent （0.79） of earthquake frequency sequences and Hurst exponent （0.87） of earthquake timing interval sequences are obtained as well. Thereby the self-similarity and hierarchical structure of these earthquakes are revealed.

关 键 词：地震 鄂西 分形 重标极差分析 H值 

分 类 号：P315.08[天文地球—地震学]