Post-earthquake denudation and its impacts on ancient civilizations in the Chengdu Longmenshan region, China
文献类型：期刊论文
| 作者 | Chen, Ningsheng1 ; Li, Jun2; Liu, Lihong1; Yang, Chenglin3; Liu, Mei1,4
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| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2018-05-15 |
| 卷号 | 309页码:51-59 |
| 关键词 | Debris flow Flash flood Denudation Migration Humid mountainous regions |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2018.02.007 |
| 英文摘要 | This study characterizes significant changes in denudation and disasters in mountainous areas induced in the humid Chengdu Longmenshan region by the Wenchuan Earthquake in 2008. A study focusing on the Longxi-Baisha River Basin was conducted to investigate the amount of denudation triggered by specific flash flood and debris flow events in 2009-2014. The following results were obtained through a comparison of pre-seismic regional denudation rates and denudation characteristics of other seismically active mountain regions. (1) Regional denudation processes occurred in a wave-like process of initial increase then decline, with a peak exhibiting a hyperbolic attenuation trend. This trend indicates that the denudation rate in the Chengdu Longmenshan region is expected to return to the pre-seismic rate of 0.3 mm a(-1) after 81 years. In 22 years after the earthquake (Year 2030), debris flow disasters are expected to be rare. (2) Disasters increased significantly in the Chengdu Longmenshan region after the Wenchuan earthquake, with an average of 29.5 people missing or dead per year (22 times greater than the pre-earthquake rate) and average economic losses of 192 million Yuan per year (1.6 times greater than the pre-earthquake rate). (3) The denudation process was jointly controlled by the quantities of loose solid material and precipitation after the Wenchuan earthquake. The amount of loose solid material influenced the extent of denudation, while vegetation coverage rates and soil consolidation determined the overall denudation trend in the region, and changes in precipitation led to denudation fluctuations. (4) The results can be used to analyze the relationship between the potential flash flood-debris flow disasters after earthquakes in the ancient Shu kingdom and changes in historical social settlements. The results can also be used to predict denudation processes and disaster risks from earthquakes in humid mountainous regions around the world, such as the southern slope of the Himalayas, Japan and the Taiwan mountains. (C) 2018 Elsevier B.V. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000430525500005 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.imde.ac.cn/handle/131551/21486]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 通讯作者 | Chen, Ningsheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China 2.Sichuan Univ Sci & Engn, Sch Civil Engn, Zigong 643000, Peoples R China 3.RMIT Univ, Sch Sci Math & Geospatial Sci, Melbourne, Vic 3000, Australia 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Ningsheng,Li, Jun,Liu, Lihong,et al. Post-earthquake denudation and its impacts on ancient civilizations in the Chengdu Longmenshan region, China[J]. GEOMORPHOLOGY,2018,309:51-59. |
| APA | Chen, Ningsheng,Li, Jun,Liu, Lihong,Yang, Chenglin,&Liu, Mei.(2018).Post-earthquake denudation and its impacts on ancient civilizations in the Chengdu Longmenshan region, China.GEOMORPHOLOGY,309,51-59. |
| MLA | Chen, Ningsheng,et al."Post-earthquake denudation and its impacts on ancient civilizations in the Chengdu Longmenshan region, China".GEOMORPHOLOGY 309(2018):51-59. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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