兰州1125年7级地震考证与发震构造分析
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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 112 5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维尼龙厂内 ,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112 5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
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.
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.
引文
国家地震局兰州地震研究所,1992,兰州国营五○四厂抗震防灾规划
王源主编,1997,王诗文集,甘肃省人大办公厅印刷厂印刷
兰州市政协文史资料研究委员会,1987,《兰州文史资料选辑》(第六辑)。
国家地震局兰州地震研究所,1985,陕甘宁青四省区强震目录,13,西安:陕西科技出版社
国家地震局兰州地震研究所,1989,甘肃省历史地震资料汇编,北京:地震出版社,34～36。
何秀琴、王多杰、万夫领,1997,1125年兰州70级地震形变破裂带特征及有关问题讨论,华北地震科学,15(1),37～44。
侯珍清、王多杰、董志平,1985,兰州金城关断裂的新活动性与地震,西北地震学报,7(2),95～98。
西北师范大学古籍整理研究所编,1992,甘肃古迹名胜辞典,兰州:甘肃教育出版社,35
袁道阳、刘百篪,1999,兰州1125年7级地震研究的新进展,中国地震年鉴,北京:地震出版社,342～344
谢毓寿、蔡美彪主编,1983,中国地震历史资料汇编(第一卷),138～139。
王源主编,1997,王诗文集,甘肃省人大办公厅印刷厂印刷
兰州市政协文史资料研究委员会,1987,《兰州文史资料选辑》(第六辑)。
国家地震局兰州地震研究所,1985,陕甘宁青四省区强震目录,13,西安:陕西科技出版社
国家地震局兰州地震研究所,1989,甘肃省历史地震资料汇编,北京:地震出版社,34～36。
何秀琴、王多杰、万夫领,1997,1125年兰州70级地震形变破裂带特征及有关问题讨论,华北地震科学,15(1),37～44。
侯珍清、王多杰、董志平,1985,兰州金城关断裂的新活动性与地震,西北地震学报,7(2),95～98。
西北师范大学古籍整理研究所编,1992,甘肃古迹名胜辞典,兰州:甘肃教育出版社,35
袁道阳、刘百篪,1999,兰州1125年7级地震研究的新进展,中国地震年鉴,北京:地震出版社,342～344
谢毓寿、蔡美彪主编,1983,中国地震历史资料汇编(第一卷),138～139。
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