IMHE OpenIR  > 山地灾害与地表过程重点实验室
云南鲁甸“8·03”地震地表破裂与大型地震滑坡
Alternative Titleurface Ruptures and Large-scale Landslides Caused by“8·03”Ludian Earthquake in Yunnan,China
陈兴长; 胡凯衡; 葛永刚; 汪阳春
Corresponding Author胡凯衡
2015
Source Publication山地学报
ISSN1008-2786
Volume33Issue:1Pages:65-71
Abstract云南鲁甸“8·03”地震造成重大的人员伤亡和财产损失,诱发大量次生山地灾害。根据实地考察和遥感解译,在地震烈度Ⅸ度区内发现一条地震地表破裂带,沿破裂带发育有4 个( 特) 大型滑坡和一个高危堰塞湖。该破裂带具有典型的右旋走滑特征,系右旋走滑断层活动的结果。根据其发育特征,该断层应为“包谷垴- 小河断裂”沿小河- 乐红镇方向的延伸部分,对地震灾区次生山地灾害的分布起着重要的控制作用,也是4 个大型滑坡形成的重要动力来源。综合分析断层的位置特征和大型地震灾害的分布情况,推断该断层为本次地震的发震断层。建议进一步加强该发震断层诱发次生山地灾害的调查与分析,防止次生山地灾害造成新的危害。
Other AbstractThe August 3,2014 Ludian Earthquake (Ms 6.5) ( “8·03”Ludian Earthquake) ,resulted in more than 600 deaths and significant property losses,has induced thousands of secondary geo-hazards. According to field investigation and remote sensing interpretation,it was found that there was an earthquake surface rupture zone with
four large-scale landslides and a high-risk quake-lake around it in the Ⅸ - degree seismic intensity area. The zone is characterized by typical right-lateral strike-slip,which means that it caused by the activity of a right-lateral strike-slip fault. Therefore,the earthquake surface rupture is an outcrop of the fault. According to the features of
the outcrop,it should be an extension of Baogunao - Xiaohe Fault along the direction from Xiaohe to Lehong towns ( NW - SE) . The fault,which controlled the distribution of secondary geo-hazards induced by the earthquake,was an important factor for the formation of the four large-scale landslides. Based on analysis of the fault location features and the distribution of the four large-size landslides,it was convinced that the fault was also seismogenic fault of the earthquake and characterized by right-lateral strike-slip. It was suggested that the investigation and prediction research of secondary geo-hazards induced by the seismogenic fault should be strengthened to prevent new damages by the secondary geo-hazards.
Keyword地表破裂 滑坡 走滑断层 鲁甸“8·03”地震
Subject AreaP316 ; P642.22
DOI10.16089 /j. cnki.1008-2786.000009
Indexed ByCSCD
Language中文
CSCD IDCSCD:5377222
Funding Organization中国科学院重点部署项目( KZZD - EW - 05 - 01) ; 国家自然科学基金项目( 41372301)
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/7931
Collection山地灾害与地表过程重点实验室
Recommended Citation
GB/T 7714
陈兴长,胡凯衡,葛永刚,等. 云南鲁甸“8·03”地震地表破裂与大型地震滑坡[J]. 山地学报,2015,33(1):65-71.
APA 陈兴长,胡凯衡,葛永刚,&汪阳春.(2015).云南鲁甸“8·03”地震地表破裂与大型地震滑坡.山地学报,33(1),65-71.
MLA 陈兴长,et al."云南鲁甸“8·03”地震地表破裂与大型地震滑坡".山地学报 33.1(2015):65-71.
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