Characteristics of earthquake clustering in and around Japan revealed by single-link cluster analysis  

作　　者：Shuyuan Liu Qinghua Huang 

机构地区：[1]Department of Geophysics,School of Earth and Space Sciences,Peking University,Beijing 100871,China

出　　处：《Earthquake Science》2019年第5期221-228,共8页地震学报（英文版）

摘　　要：In this study,we apply the single-link cluster(SLC)method to analyze the characteristics of earth-quake clustering in Japan.Among the clustering algorithms,the SLC method is effpctive in characterizing earthquake clusters or isolated events at both global and local scales.The results indicate that link lengths for the whole investigated area in and around Japan follow negative exponential functi-onal or Gamma distribution functional increase.Besides,some difference is revealed among different areas,e.g.,link lengths in the area of the Japan Trench and the Kuril Trench are shorter than those in other areas;the densest spatial distribution of the SLC framework is also in the area of the Japan Trench and the Kuril Trench.The close investigations indicate that the a and 1/θvalues estimated respectively from the exponential function and Gamma distribution may relate to spatial clustering,which is supported by the results of the distribution of link lengths and the spatial distribution of the SLC framework in the investigated areas.

关 键 词：earthquake clustering single-link cluster method JAPAN 

分 类 号：P315[天文地球—地震学]