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Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows
He, Songtang1,2,3; Wang, Daojie1,2; Chang, Shiqiu1,2,3; Fang, Yingchao1,2,3; Lan, Huijuan1,2,3
2018
Source PublicationENVIRONMENTAL EARTH SCIENCES
ISSN1866-6280
EISSN1866-6299
Volume77Issue:14Pages:13
SubtypeArticle
Contribution Rank1
AbstractA series experiments are conducted to investigate the effects of streambed profile on the erosion and deposition of debris flows. It is found that straight channel can increase the run out of debris flows by 10-25%, compared to that of surfaces without channels, and that travel distance was positively correlated with the hydraulic radius of the channel. In addition, the presence of straight channels caused the volume of debris flow deposition to become normally distributed with respect to travel distance. In the case of curved channels, increases in the sinuosity index resulted in significant blockage and obstruction. In the deposition zone, the maximum deposition volume for a channel with a comparatively low sinuosity index (1.05) was <50% of the minimum deposition volume for a straight channel. Furthermore, the channel curvature affected not only the positions of deposition peaks along the travel distance but also the debris flow magnitudes in each unit interval (0.5 m). This study demonstrates the effects of differences in channel morphology on the erosional and depositional processes of gully debris flows. These findings are of significant importance for guiding debris flow risk assessment and for the restoration and reconstruction of downstream regions.
KeywordDebris flows Channel morphology Hydraulic radius Sinuosity index Jiangjia gully
DOI10.1007/s12665-018-7721-y
Indexed BySCI
WOS KeywordGULLY EROSION ; LANDSLIDE HAZARD ; FREQUENCY RATIO ; VALLEY ; DYNAMICS ; MODELS ; REGION ; CHINA ; PREDICTION ; INITIATION
Language英语
Quartile4区
Funding ProjectNational Natural Science Foundation of China[41790434] ; National Natural Science Foundation of China[41471010] ; National Key Technology RD Program[2014BAL05B01]
TOP
WOS Research AreaEnvironmental Sciences & Ecology ; Geology ; Water Resources
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000440144200004
Funding OrganizationNational Natural Science Foundation of China ; National Key Technology RD Program
PublisherSPRINGER
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/23466
Collection山地灾害与地表过程重点实验室
Corresponding AuthorWang, Daojie
Affiliation1.Chinese Acad Sci, Key Lab Mt Hazards & Earth Surface Proc, Chengdu 610041, Sichuan, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,Block4,Renminnanlu Rd, Chengdu 610041, Sichuan, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
He, Songtang,Wang, Daojie,Chang, Shiqiu,et al. Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows[J]. ENVIRONMENTAL EARTH SCIENCES,2018,77(14):13.
APA He, Songtang,Wang, Daojie,Chang, Shiqiu,Fang, Yingchao,&Lan, Huijuan.(2018).Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows.ENVIRONMENTAL EARTH SCIENCES,77(14),13.
MLA He, Songtang,et al."Effects of the morphology of sediment-transporting channels on the erosion and deposition of debris flows".ENVIRONMENTAL EARTH SCIENCES 77.14(2018):13.
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