| 长岭山北麓断裂上新发现的地震地表破裂带 |
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| 引用本文： | 柳煜,杨斌,李明永,王爱国,刘洪春.长岭山北麓断裂上新发现的地震地表破裂带[J].西北地震学报,2006,28(4):319-326. |
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| 作者姓名： | 柳煜 杨斌 李明永 王爱国 刘洪春 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,甘肃,兰州,730000
2. 中国地震局兰州地震研究所,甘肃,兰州,730000;中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃,兰州,730000 |
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| 基金项目： | 中国地震局兰州地震研究所科研基金 |
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| 摘 要： | 通过野外地震地质调查,在甘肃省古浪县、景泰县交界处的长岭山地区新发现了丰富的线状分布的地震地表破裂现象,表现为基岩崩塌、黄土滑坡、地震裂缝、地震土林、地震沟槽、陷落坑以及断层陡坎等,局部可见残留的破裂滑动自由面。其分布严格受长岭山北麓活动断裂控制。通过地震地表破裂带本身的特征分析、年代学分析、地表破裂带长度与震级的拟合关系以及结合区域活动断裂资料研究,认为该地震地表破裂带可能为1927年古浪8.0级地震的产物。
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| 关 键 词： | 地表破裂带 长岭山北麓活动断裂 古浪8.0级地震 |
| 文章编号： | 1000-0844(2006)04-0319-08 |
| 收稿时间： | 05 31 2006 12:00AM |
| 修稿时间： | 2006年5月31日 |
A New Discoved Co-seismic Surface Rupture Zone on Changlingshan Northern Piedmont Fault |
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| LIU?Yu,YANG?Bin,LI?Ming-yong,WANG?Ai-guo and LIU?Hong-chun.A New Discoved Co-seismic Surface Rupture Zone on Changlingshan Northern Piedmont Fault[J].Northwestern Seismological Journal,2006,28(4):319-326. |
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| Authors: | LIU?Yu YANG?Bin LI?Ming-yong WANG?Ai-guo and LIU?Hong-chun |
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| Institution: | 1. Lanzhou Institute of Seismology,CEA,Lanzhou 730000,China;2.State Key Laboratory of Frozen Soil Engineering, Cold and Arid Regions Environmental and Engineering Research Institute ,CAS,Lanzhou 730000,China |
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| Abstract: | Based on the seismo-geological field investigation,a co-seismic surface rupture zone in Changlingshan area,Gansu province,was discoved recently.The rupture phenomena include:rock collapse,landslip,downthrown-pit,earthquake slot,uplift,scarplet,earthquake fissure and so on.The distribution of the rupture zone is controled strictly by Changlingshan Northern Piedmont Fault.Through the comprehensive research on the characters of the rupture zone,TL age testing,data of the regional active tectonics and the relationship between rupture zone lengths and earthquake magnitudes,it is considered that this rupture zone was caused by Gulang M_S 8.0 earthquake in 1927. |
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| Keywords: | Surface rupture zone Changlingshan Northern piedmont Fualt Gulang M_S earthquake |
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