Inferring seismic hazard in Sichuan-Yunnan region of China based on the modern earthquake catalogue (1980-2019)

作     者：Ziyao Xiong Shiyong Zhou Jiancang Zhuang Ziyao Xiong;Shiyong Zhou;Jiancang Zhuang

作者机构：School of Earth and Space SciencesPeking UniversityBeijing100871China The Institute of Statistical MathematicsTokyo 1908562Japan 

出 版 物：《Earthquake Science》 (地震学报（英文版）)

年 卷 期：2020年第33卷第3期

页      面：107-115页

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 07[理学] 070801[理学-固体地球物理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0816[工学-测绘科学与技术] 0813[工学-建筑学] 0814[工学-土木工程] 0825[工学-航空宇航科学与技术] 0704[理学-天文学] 

基　　金：Ningxia Hui Autonomous Region Key R&D Plan East West cooperation Project(No.2018BFG02011) National Natural Science Foundation of China(No.41674047) China Earthquake Science Experiment Site Project,CEA(Nos.2019CSES0105 and 2019CSES0106). 

主　　题：seismic hazard analysis Voronoi tessellation spatial smoothing b-value 

摘      要：Based on the modern earthquake catalogue,the incomplete centroidal voronoi tessellation(ICVT)method was used in this study to estimate the seismic hazard in Sichuan-Yunnan region of China.We calculated spatial distributions of the total seismic hazard and background seismic hazard in this area.The Bayesian delaunay tessellation smoothing method put forward by Ogata was used to calculate the spatial distributions of b-value.The results show that seismic hazards in Sichuan-Yunan region are high,and areas with relatively high hazard values are distributed along the main faults,while seismic hazards in Sichuan basin are relatively low.