地震工程学报2016，Vol.38Issue(1)：144-149,6.DOI:10.3969/j.issn.1000-0844.2016.01.0144
2013年8月新疆乌鲁木齐市5.1级地震强震动记录及特征分析
Characteristics of Strong Motion Records of Urumqi,Xinj iang MS5.1 Earthquake on August 30,2013
摘要
Abstract
On August 30,2013,a MS5.1 earthquake occurred in Urumqi (43.8°N,87.6°E),Xin-jiang,China.This was the largest earthquake to have occurred in this area for decades,and the first earthquake with a magnitude equal to or greater than 5 .0 to have occurred since establish-ment of the intensity fast report stations network in Urumqi.The microscopic epicenter of this earthquake was located in Hongshan.Although the earthquake was relatively small,most of the intensity fast report stations were triggered near the epicenter,and 32 main shock acceleration re-cords were obtained.In this study,23 typical strong motion records within different epicenter distances were selected to conduct a conventional analysis.By comparing the peak ground acceler-ations (PGA)of this earthquake with the acceleration attenuation relation of the soil layer in Xin-jiang,observed values were found to be in good agreement with predicted values at a depth of 0~50 km.An earthquake location analysis was then conducted,and results were found to be influ-enced by several factors:the rationality of station distribution,accuracy of the regional velocity model,reliability of seismic phase discrimination,and the proper location method.We used the strong motion data to locate the MS 5.1 earthquake,and results showed a good linear relationship between P-wave travel time and epicentral distance.It is considered that in-depth research of motion characteristics could be conducted in other large cities,and results could be combined with records presented here.关键词
乌鲁木齐地震/衰减关系/强震动记录Key words
Urumqi earthquake/attenuation relation/strong motion records分类
天文与地球科学引用本文复制引用
张振斌,温瑞智,魏斌,王宝柱..2013年8月新疆乌鲁木齐市5.1级地震强震动记录及特征分析[J].地震工程学报,2016,38(1):144-149,6.基金项目
新疆地震局青年科学基金项目(200508,200606) （200508,200606）
中国地震局交流访问学者计划 （）
