| 兰州1125年7级地震考证与发震构造分析 |
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| 引用本文： | 袁道阳,雷中生,刘百篪,才树华,刘小凤,王永成.兰州1125年7级地震考证与发震构造分析[J].中国地震,2002,18(1):67-75. |
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| 作者姓名： | 袁道阳 雷中生 刘百篪 才树华 刘小凤 王永成 |
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| 作者单位： | 中国兰州,730000,中国地震局兰州地震研究所 |
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| 基金项目： | 甘肃省“九五”攻关项目 (GK973 2 110A)，国家重点基础发展规划项目 (G19980 40 70 1)资助 |
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| 摘 要： | 对历史地震资料的详细考证，黄土地震滑坡的调查及兰州地区活动断裂的追踪考察表明：在兰州1125年地震中遭毁坏的“金城六城”之一的益机滩堡在今兰州市西固区河口以南的潍尼龙厂内，由此确定的六城范围在今兰州市西固区以南至河口一带，这与本区黄土地震滑坡的分布范围，全新世活动断裂的展布及地震破裂带遗迹的分布相吻合，综合分析认为，兰州1125年7级地震的发震构造应为兰州市区以南，距市区最近距离仅4km的马衔山北缘活动断裂带西端的咸水沟断裂段。
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| 关 键 词： | 兰州市 历史地震 史料考证 黄土滑坡 发震构造 |
| 文章编号： | 1001-4683(2002)01-0067-09 |
Textual Research on the 1125 Lanzhou M7.0 Earthquake and the Causative Structure |
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| Yuan Daoyang,Lei Zhongsheng,Liu Baichi,Cai Shuhua,Liu Xiaofeng,Wang Yongcheng.Textual Research on the 1125 Lanzhou M7.0 Earthquake and the Causative Structure[J].Earthquake Research in China,2002,18(1):67-75. |
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| Authors: | Yuan Daoyang Lei Zhongsheng Liu Baichi Cai Shuhua Liu Xiaofeng Wang Yongcheng |
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| Abstract: | There was a great earthquake happened in Lanzhou city with magnitude about 7.0 on August 30,1125 AD, caused 6 towns damaged in Jingcheng (Lanzhou) during that earthquake. According to the detail textual research on the historical earthquake references, the distribution of loess earthquake landslides and compare to the activities of all the active fault zones in Lanzhou area. The central area of the 1125 Lanzhou M7.0 earthquake is in the area from south of Xigu to Hekou. It is consistent with the area of ancient towns distribution, loess landslides distribution, Holocene active fault and the earthquake rupture zone. Comprehensive analysis indicate that the causative structure of the 1125 Lanzhou M7.0 earthquake is in the west segment of the northern margin of Maxianshan Mt. active fault zone. It is the new activity of this fault caused the great earthquake. |
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| Keywords: | Lanzhou Historical earthquake Historical reference textual research Loess landslide Causative structure |
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