| 乌鲁木齐市活断层强地面运动预测研究 |
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| 引用本文： | 沈军,宋和平,赵伯明.乌鲁木齐市活断层强地面运动预测研究[J].内陆地震,2009,23(2):196-205. |
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| 作者姓名： | 沈军 宋和平 赵伯明 |
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| 作者单位： | 1. 新疆维吾尔自治区地震局,新疆,乌鲁木齐,830011
2. 北方交通大学,北京,100044 |
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| 基金项目： | 国家科技支撑项目，国家重大项目 |
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| 摘 要： | 介绍了基于乌鲁木齐活断层发震构造模型的强地面运动的预测结果.该项工作是在乌鲁木齐城区开展的活断层探测与地震危险性评价的基础上,设定了两个发震构造,分别为北天山山前逆冲推覆构造和博格达弧西翼逆冲推覆构造,前者可能最大地震震级为7.5级,后者为7.0级,据此建立了分析计算模型.根据地脉动观测分析结果,结合浅层地震勘探、地质图、地形图和钻孔资料,建立了地下三维速度模型,采用统计学的格林函数法、三维有限差分法和混合计算方法,对目标区的地震动进行了预测研究.预测结果表明,断层的结构、破裂方式和三维速度模型对地震动的分布具有显著的影响.沿断层前缘、盆地边缘、覆盖层较厚的地区,以及断层破裂的前方地震动比较显著.
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| 关 键 词： | 乌鲁木齐市 活断层 强地面运动 |
STRONG GROUND MOTION PREDICTION OF URUMQI ACTIVE FAULT |
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| SHEN Jun,SONG He-ping,ZHAO Bo-ming.STRONG GROUND MOTION PREDICTION OF URUMQI ACTIVE FAULT[J].Inland Earthquake,2009,23(2):196-205. |
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| Authors: | SHEN Jun SONG He-ping ZHAO Bo-ming |
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| Institution: | 1.Earthquake Administration of Xinjiang Uygur Autonomous Region;Urumqi 830011;Xinjiang;China;2.Northern Jiaotong University;Beijing 100044;China |
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| Abstract: | The paper introduced the strong ground motion prediction results based on seismo-tectonic model of Urumqi active fault.During detecting active fault and assessing earthquake risk in Urumqi,two seismo-tectonics models were set.They were thrust nappe structure in front of northern Tienshan Mountain and in west side of Bogeda arcuate structure respectively.The possible max-magnitude of the former was about 7.5 and that of the latter was about 7.0,so the analytical or computational model was established.Accordi... |
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| Keywords: | Urumqi city Active fault Strong ground motion |
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