Changes in hydrological behaviours triggered by earthquake disturbance in a mountainous watershed

doi:10.1016/j.scitotenv.2020.143349

	Changes in hydrological behaviours triggered by earthquake disturbance in a mountainous watershed
	Zhang, Guotao 2,3; Cui, Peng 2,3,4; Jin, Wen 2,3; Zhang, Zhengtao 5; Wang, Hao 2,5; Bazai, Nazir Ahmed 2,3,6; Li, Yao 2,3; Liu, Dingzhu 2,3; Alessandro, Pasuto 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2021-03-15
卷号	760 页码:16
关键词	Earthquake disturbance Landslides Runoff potential Flood peaks Hydrological model
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2020.143349
通讯作者	Cui, Peng(pengcui@imde.ac.cn)
英文摘要	Landslides induced by strong earthquakes often destroy large amounts of landscape vegetation which can trigger significant changes in runoff potential and flood flow. Little is known about hydrological behaviours imposed by co-seismic landslides and their post-earthquake evolution. Therefore, we collected time-series datasets (2007-2018) of underlying surface conditions (USC) changes including landslide expansion and recovery in a watershed affected by the Wenchuan earthquake to further quantify howthe large physical disturbance affected the flood hydrological behaviours. The hydrological model HEC-HMS was calibrated and validated to predict the historical hydrological behaviours based on 5 min time-series data in rainfalls and streamflow (2018-2019), showing a good model performance with a mean Nash-Sutcliffe efficiency of 0.76. It was found that, shortly after the earthquake, the sharp expansion with 11% of landslide areas elevated the magnitudes of runoff potential, peak discharge, and runoff volume by >10%, and the peak to time for the high-magnitude flood was advanced by 25 min compared to the pre-earthquake levels. The tipping point along the hydrological disturbance-recovery trajectory was detected within 2011with higher flood peaks and volumes, and the periods of 2011-2013 (i.e. 3-5 years post-earthquake) were deemed to be a rapid recovery period, revealing an unstable hydrological function. These findings are significant for clearly understanding the magnitude and timing, aswell as greater risks of post-earthquake catastrophic flooding in earthquake-stricken regions. Additionally, the post-earthquake accompanied rainstorm-induced geohazards, which limited the recovery of landscape vegetation, triggering an undulant but clear recovery process (1-7 years post-earthquake) of hydrological behaviours. These findings promoted our understanding of the spatiotemporal evolution of hydrological behaviours triggered by the earthquake, and further contribute to the development of adaptation andmitigation strategies for the unpredictable flash floods triggered by future abrupt natural hazards in earthquake-affected regions. (C) 2020 Published by Elsevier B.V.
资助项目	National Natural Science Foundation of China[41790432] ; Major International (Regional) Joint Research Project[41520104002] ; Sichuan Science and Technology program[2019YFH0040] ; Key Research Program of Frontier Sciences, CAS[QYZDY-SSW-DQC006]
WOS关键词	2008 WENCHUAN EARTHQUAKE ; DEBRIS FLOWS ; RIVER-BASIN ; HEC-HMS ; RUNOFF ; CONNECTIVITY ; CATCHMENT ; RAINFALL ; IMPACTS ; LANDSLIDES
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000607779400031
资助机构	National Natural Science Foundation of China ; Major International (Regional) Joint Research Project ; Sichuan Science and Technology program ; Key Research Program of Frontier Sciences, CAS
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136228]
专题	中国科学院地理科学与资源研究所
通讯作者	Cui, Peng
作者单位	1.Italian Natl Res Council, Res Inst Geohydrol Protect, I-351127 Padua, Italy 2.Chinese Acad Sci, Key Lab Mt Hazards & Surface Proc, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 6.China Pakistan Earth Sci Joint Res Ctr, Islamabad, Pakistan
推荐引用方式 GB/T 7714	Zhang, Guotao,Cui, Peng,Jin, Wen,et al. Changes in hydrological behaviours triggered by earthquake disturbance in a mountainous watershed[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,760:16.
APA	Zhang, Guotao.,Cui, Peng.,Jin, Wen.,Zhang, Zhengtao.,Wang, Hao.,...&Alessandro, Pasuto.(2021).Changes in hydrological behaviours triggered by earthquake disturbance in a mountainous watershed.SCIENCE OF THE TOTAL ENVIRONMENT,760,16.
MLA	Zhang, Guotao,et al."Changes in hydrological behaviours triggered by earthquake disturbance in a mountainous watershed".SCIENCE OF THE TOTAL ENVIRONMENT 760(2021):16.