| 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 Publication | ENVIRONMENTAL EARTH SCIENCES
 |
| ISSN | 1866-6280 |
| EISSN | 1866-6299 |
| Volume | 77Issue:14Pages:13 |
| Subtype | Article |
| Contribution Rank | 1 |
| Abstract | A 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. |
| Keyword | Debris flows Channel morphology Hydraulic radius Sinuosity index Jiangjia gully |
| DOI | 10.1007/s12665-018-7721-y |
| Indexed By | SCI |
| WOS Keyword | GULLY EROSION ; LANDSLIDE HAZARD ; FREQUENCY RATIO ; VALLEY ; DYNAMICS ; MODELS ; REGION ; CHINA ; PREDICTION ; INITIATION |
| Language | 英语 |
| Quartile | 4区 |
| Funding Project | National Natural Science Foundation of China[41790434] ; National Natural Science Foundation of China[41471010] ; National Key Technology RD Program[2014BAL05B01] |
| TOP | 否 |
| WOS Research Area | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS Subject | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| WOS ID | WOS:000440144200004 |
| Funding Organization | National Natural Science Foundation of China ; National Key Technology RD Program |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imde.ac.cn/handle/131551/23466 |
| Collection | 山地灾害与地表过程重点实验室 |
| Corresponding Author | Wang, Daojie |
| Affiliation | 1.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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Effects of the morph（1744KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment