Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully
Process analysis and hazard prediction are essential for the prevention and mitigation of debris-flow hazards in mountainous areas. Many villages and ongoing infrastructure projects in China are vulnerable to large debris flows during heavy rainfall or glacier lake outbursts. Without emergency manag...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/19027 2023-05-15T14:14:17+02:00 Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully Zou, Qiang Zhou, Gordon G. D. Li, Shusong Ouyang, Chaojun Tang, Jinbo 2017 http://ir.imde.ac.cn/handle/131551/19027 https://doi.org/10.1657/AAAR0017-019 英语 eng INST ARCTIC ALPINE RES ARCTIC ANTARCTIC AND ALPINE RESEARCH Qiang Zou,Gordon G. D. Zhou,Shusong Li,et al. Dynamic Process Analysis and Hazard Prediction of Debris Flow in Eastern[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2017,49(3):373-390. http://ir.imde.ac.cn/handle/131551/19027 doi:10.1657/AAAR0017-019 Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography CHI-CHI EARTHQUAKE RISK-ASSESSMENT WENCHUAN EARTHQUAKE SIMULATION EXAMPLE TAIWAN MODELS GIS Environmental Sciences Geography Physical Article 期刊论文 2017 ftchinacadscimhe https://doi.org/10.1657/AAAR0017-019 2022-12-19T18:20:15Z Process analysis and hazard prediction are essential for the prevention and mitigation of debris-flow hazards in mountainous areas. Many villages and ongoing infrastructure projects in China are vulnerable to large debris flows during heavy rainfall or glacier lake outbursts. Without emergency management planning, such contingencies can lead to extensive loss of life and egregious property damage. In the eastern Qinghai-Tibet Plateau area, debris-flow disasters are a common phenomenon. Taking Ridi Gully in the Sichuan Province of China as a case study, we analyzed the process of debris-flow events by running a dynamic erosion model. Because of the dynamic nature of the process, we needed to take into account many variables. Some of these variables include strong erosion in the origin area, scouring and downward erosion in debris-flow path, and siltation in accumulation area. Subsequently, we analyzed the elements underlying the hazard formation conditions and proposed a systematic and quantitative method of debris-flow hazard prediction based on kinetic energy and flow depth. Finally, we predicted the hazard and damage potential induced by the debris flow triggered by a 100-year and 200-year return period precipitation in Ridi Gully. The simulation results indicate that debris flow will cause great damage to the Sichuan-Tibet railway (or highway) and the residential area on the alluvial fan. This strongly suggests that, given the high level of debris-flow hazard predicted, the proposed method may serve as pertinent and timely support in planning measures to prevent or reduce the debris-flow hazard, both in the eastern Qinghai-Tibet Plateau area and beyond. Article in Journal/Newspaper Antarctic and Alpine Research Arctic IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Arctic, Antarctic, and Alpine Research 49 3 373 390 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography CHI-CHI EARTHQUAKE RISK-ASSESSMENT WENCHUAN EARTHQUAKE SIMULATION EXAMPLE TAIWAN MODELS GIS Environmental Sciences Geography Physical |
spellingShingle |
Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography CHI-CHI EARTHQUAKE RISK-ASSESSMENT WENCHUAN EARTHQUAKE SIMULATION EXAMPLE TAIWAN MODELS GIS Environmental Sciences Geography Physical Zou, Qiang Zhou, Gordon G. D. Li, Shusong Ouyang, Chaojun Tang, Jinbo Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
topic_facet |
Science & Technology Life Sciences & Biomedicine Physical Sciences Environmental Sciences & Ecology Physical Geography CHI-CHI EARTHQUAKE RISK-ASSESSMENT WENCHUAN EARTHQUAKE SIMULATION EXAMPLE TAIWAN MODELS GIS Environmental Sciences Geography Physical |
description |
Process analysis and hazard prediction are essential for the prevention and mitigation of debris-flow hazards in mountainous areas. Many villages and ongoing infrastructure projects in China are vulnerable to large debris flows during heavy rainfall or glacier lake outbursts. Without emergency management planning, such contingencies can lead to extensive loss of life and egregious property damage. In the eastern Qinghai-Tibet Plateau area, debris-flow disasters are a common phenomenon. Taking Ridi Gully in the Sichuan Province of China as a case study, we analyzed the process of debris-flow events by running a dynamic erosion model. Because of the dynamic nature of the process, we needed to take into account many variables. Some of these variables include strong erosion in the origin area, scouring and downward erosion in debris-flow path, and siltation in accumulation area. Subsequently, we analyzed the elements underlying the hazard formation conditions and proposed a systematic and quantitative method of debris-flow hazard prediction based on kinetic energy and flow depth. Finally, we predicted the hazard and damage potential induced by the debris flow triggered by a 100-year and 200-year return period precipitation in Ridi Gully. The simulation results indicate that debris flow will cause great damage to the Sichuan-Tibet railway (or highway) and the residential area on the alluvial fan. This strongly suggests that, given the high level of debris-flow hazard predicted, the proposed method may serve as pertinent and timely support in planning measures to prevent or reduce the debris-flow hazard, both in the eastern Qinghai-Tibet Plateau area and beyond. |
format |
Article in Journal/Newspaper |
author |
Zou, Qiang Zhou, Gordon G. D. Li, Shusong Ouyang, Chaojun Tang, Jinbo |
author_facet |
Zou, Qiang Zhou, Gordon G. D. Li, Shusong Ouyang, Chaojun Tang, Jinbo |
author_sort |
Zou, Qiang |
title |
Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
title_short |
Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
title_full |
Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
title_fullStr |
Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
title_full_unstemmed |
Dynamic process analysis and hazard prediction of debris flow in eastern Qinghai-Tibet Plateau area-A case study at Ridi Gully |
title_sort |
dynamic process analysis and hazard prediction of debris flow in eastern qinghai-tibet plateau area-a case study at ridi gully |
publisher |
INST ARCTIC ALPINE RES |
publishDate |
2017 |
url |
http://ir.imde.ac.cn/handle/131551/19027 https://doi.org/10.1657/AAAR0017-019 |
genre |
Antarctic and Alpine Research Arctic |
genre_facet |
Antarctic and Alpine Research Arctic |
op_relation |
ARCTIC ANTARCTIC AND ALPINE RESEARCH Qiang Zou,Gordon G. D. Zhou,Shusong Li,et al. Dynamic Process Analysis and Hazard Prediction of Debris Flow in Eastern[J]. ARCTIC ANTARCTIC AND ALPINE RESEARCH,2017,49(3):373-390. http://ir.imde.ac.cn/handle/131551/19027 doi:10.1657/AAAR0017-019 |
op_doi |
https://doi.org/10.1657/AAAR0017-019 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
49 |
container_issue |
3 |
container_start_page |
373 |
op_container_end_page |
390 |
_version_ |
1766286834204147712 |