地震学报2017，Vol.39Issue(5)：751-763,13.DOI:10.11939/jass.2017.05.010
2013年乌鲁木齐Ms5.6和Ms5.1地震强地震动模拟研究
Ground motion simulation of 2013 (U)rümqi Ms5.6 and Ms5.1 earthquakes
摘要
Abstract
In this study,we simulated strong ground motion of two earthquakes with Ms5.6 and Ms5.1 occurred in Xinjiang (U)rümqi in 2013 based on modified stochastic finite fault modeling with dynamic corner frequency.45 strong ground motion records from 23 stations were chosen to simulate by different source parameters,and response spectrum and accelerograms were compared with the observed ones.The results show that simulated strong ground motion have some differences with observed data in duration and shape,and the value of simulated peak ground acceleration (PGA) is less than observed in nearsource.For acceleration response spectrum,the simulated result is consistent with observed.The bias of stochastic finite fault is between ±0.5 suggesting a good agreement for high frequency.For different source parameters model,the distribution characteristic of simulated PGAs are consistent with observed,but the simulated PGAs are less than observed ones.关键词
随机有限断层法/强地震动模拟/PGA分布/2013年乌鲁木齐两次地震Key words
stochastic finite fault method/ground motion simulate/PGA distribution/2013 (U)rümqi earthquake分类
天文与地球科学引用本文复制引用
孙吉泽,俞言祥,何金刚,李一琼..2013年乌鲁木齐Ms5.6和Ms5.1地震强地震动模拟研究[J].地震学报,2017,39(5):751-763,13.基金项目
水利部公益性行业科研专项经费项目(201501034)、国家重点研发计划资助(2017YFC0404901)、国家自然科学基金(41574051)和新疆地震科学基金(2015202)联合资助. （201501034）
