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| 祁连山北缘佛洞庙-红崖子断裂古地震特征初步研究 | |
| 引用本文： | 刘兴旺,袁道阳,何文贵.祁连山北缘佛洞庙-红崖子断裂古地震特征初步研究[J].震灾防御技术,2014,9(3):411-419. |
| 作者姓名： | 刘兴旺 袁道阳 何文贵 |
| 作者单位： | 1. 中国地震局兰州地震研究所,兰州730000;中国地震局地震预测研究所兰州科技创新基地,兰州730000;兰州大学西部环境教育部重点实验室,兰州730000 2. 中国地震局兰州地震研究所,兰州,730000 3. 中国地震局兰州地震研究所,兰州730000;中国地震局地震预测研究所兰州科技创新基地,兰州730000 |
| 基金项目： | 中国地震局地震预测研究所基本科研业务专项（2009A20）资助 |
| 摘 要： | 佛洞庙-红崖子断裂位于祁连山北缘断裂带中部,是祁连山与河西走廊之间的一条重要边界断裂,断裂全长约110km,总体走向北西西,该断裂为一条全新世活动的逆-左旋走滑断裂,断裂活动形成了一系列陡坎、断层崖以及冲沟和阶地左旋等断错地貌.本文通过3个探槽剖面对发生在该断裂上的古地震事件进行了分析,可确定地震事件2次,事件Ⅰ为历史地震,发生在距今400年前,为1609年红崖堡71/4级地震;事件Ⅱ的年代为距今（6.3±0.6）ka B.P.和（7.4±0.4）ka B.P.之间.同时结合前人的一些研究资料,对古地震的复发模式和间隔进行了初步讨论. |
| 关 键 词： | 佛洞庙-红崖子断裂 古地震 地震复发间隔 |
| 收稿时间： | 2013/11/22 0:00:00 |
Preliminary Study of Palaeo-earthquakes on the Fodongmiao- hongyazi Fault in the North Margin of Qilian Mountain |
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| Liu Xingwang,Yuan Daoyang and He Wengui.Preliminary Study of Palaeo-earthquakes on the Fodongmiao- hongyazi Fault in the North Margin of Qilian Mountain[J].Technology for Earthquake Disaster Prevention,2014,9(3):411-419. | |
| Authors: | Liu Xingwang Yuan Daoyang and He Wengui |
| Institution: | Liu Xingwang;Yuan Daoyang;He Wengui;Lanzhou Institute of Seismology,CEA;Lanzhou Base of Institute of Earthquake Science,CEA;Key Laboratory of Western China’s Environmental System with the Ministry of Education, Lanzhou University; |
| Abstract: | Fodongmiao-hongyazi fault lies in the middle part of the north fault zone of Qilian mountain.It is an important boundary fault between Qilian mountain and Hexi-corridor.The main trending of the fault is NWW with length of 110 km.The fault is active in Holocene period with left-lateral reverse strike-slip movement.The activity of the fault formed a series of geomorphology like fault scarp,terrace and gully left-lateral.In this paper,we report two earthquake events that were identified from three trenching survey along the fault.Event Ⅰ is a historic earthquake occurred in four hundred years ago,namely Hongyapu M71/4 in 1609.Event Ⅱ occurred between （6.3±0.6） ka B.P.and （7.4±0.4） ka B.P..Combined with the previous studies,we discussed the recurrence model and interval of the palaeo-earthquakes along the fault. |
| Keywords: | Fodongmiao-hongyazi fault Palaeo-earthquake Earthquake recurrence interval |
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