| 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 |
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| 引用本文： | 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].西北地震学报,2016,38(1):144-149. |
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| 作者姓名： | 张振斌 温瑞智 魏斌 王宝柱 |
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| 作者单位： | 新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011;中国地震局工程力学研究所, 黑龙江 哈尔滨 150080;新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011;新疆维吾尔自治区地震局, 新疆 乌鲁木齐 830011 |
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| 基金项目： | 新疆地震局青年科学基金项目(200508,200606);中国地震局交流访问学者计划 |
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| 摘 要： | 2013年8月30日乌鲁木齐市发生MS5.1地震,乌鲁木齐烈度速报台网有32个强震动台触发获得了主震加速度记录。选取23条强震动记录进行常规处理,统计强震动记录数量随震中距分布,对比分析此次地震峰值加速度(PGA)与新疆土层加速度衰减关系;并利用强震动数据对此次地震进行定位,定位结果对应台站震中距与到时线性度较好;最后分析了典型强震动台站记录特性与建筑物震害及工程震害相关性。
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| 关 键 词： | 乌鲁木齐地震 衰减关系 强震动记录 |
| 收稿时间： | 2015/4/13 0:00:00 |
Characteristics of Strong Motion Records of Urumqi, Xinjiang MS5.1 Earthquake on August 30, 2013 |
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| ZHANG Zhen-bin,WEN Rui-zhi,WEI Bin and WANG Bao-zhu.Characteristics of Strong Motion Records of Urumqi, Xinjiang MS5.1 Earthquake on August 30, 2013[J].Northwestern Seismological Journal,2016,38(1):144-149. |
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| Authors: | ZHANG Zhen-bin WEN Rui-zhi WEI Bin and WANG Bao-zhu |
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| Institution: | Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China;Institute of Engineering Mechanics, CEA, Harbin 150080, Heilongjiang, China;Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China;Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011, Xinjiang, China |
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| Abstract: | On August 30, 2013, a MS5.1 earthquake occurred in Urumqi (43.8° N, 87.6° E), Xinjiang, 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 establishment 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 records 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 accelerations (PGA) of this earthquake with the acceleration attenuation relation of the soil layer in Xinjiang, 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 influenced 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 MS5.1 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. |
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| Keywords: | Urumqi earthquake attenuation relation strong motion records |
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