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Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China
Zhang, Baojun1,2; Xiong, Donghong1; Su, Zhengan1; Yang, Dan1,2; Dong, Yifan1; Xiao, Liang1,2; Zhang, Su1,2; Shi, Liangtao3
Corresponding AuthorXiong, Donghong
2016
Source PublicationPHYSICAL GEOGRAPHY
ISSN0272-3646
EISSN1930-0557
Volume37Issue:6Pages:409-429
SubtypeArticle
AbstractHeadcut erosion has been recognized as one of the main processes involved in gully development in the dry-hot valley region of southwest China. To examine the effect of initial step height on headcut erosion processes, three headcuts were constructed ranging in height from 0.75 to 1.25m on an active bank gully head, and a series of scouring experiments were conducted under a flow discharge of 120Lmin(-1). The morphological evolutions of the plunge pools and soil loss volume were estimated by three-dimensional photo-reconstruction methods (3D-PR). As the step height increased, the experimental results showed that: (1) the transformed potential energy and shear stress would increase by approximately 4.89Js(-1) and 26.4Pa on average when the step height increased 0.25m; (2) the mean depth and width of the plunge pool exhibited obvious growth, and the morphology of the cross-section developed from approximately V-shaped to U-shaped; and (3) soil loss volume increased logarithmically, with total soil loss volumes of 0.076, 0.105 and 0.116m(3), respectively. Although the significant effects of the initial step height on headcut erosion were verified, further quantitative studies are required to quantify the mechanism of headcut erosion, especially for plunge pool erosion.
KeywordInitial Step Height 3d Photo-reconstruction Method Plunge Pool Development Gully Headcut Erosion
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1080/02723646.2016.1219939
URL查看原文
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Physical Geography ; Geology ; Meteorology & Atmospheric Sciences
Indexed BySCI
WOS KeywordUPLAND CONCENTRATED FLOWS ; PLUNGE POOL SCOUR ; RETREAT RATES ; AERIAL PHOTOGRAPHS ; PHOTOGRAMMETRY ; HYDRAULICS ; DOWNSTREAM ; MORPHOLOGY ; MIGRATION ; ACCURACY
Language英语
Quartile4区
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WOS SubjectEnvironmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS IDWOS:000386710100003
Funding OrganizationNational Basic Research Program (973 Program) of China(2015CB452704) ; National Natural Science Foundation of China(41571277) ; Key Program of the "Western Light" Talents Cultivation Program of the Chinese Academy of Sciences(Y4R2060060)
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Cited Times:10[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17571
Collection山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China
2.Chinese Acad Sci, Coll Resources & Environm, Grad Univ, Beijing, Peoples R China
3.Yunnan Acad Agr Sci, Inst Trop Ecoagr Sci, Yuanmou, 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
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Zhang, Baojun,Xiong, Donghong,Su, Zhengan,et al. Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China[J]. PHYSICAL GEOGRAPHY,2016,37(6):409-429.
APA Zhang, Baojun.,Xiong, Donghong.,Su, Zhengan.,Yang, Dan.,Dong, Yifan.,...&Shi, Liangtao.(2016).Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China.PHYSICAL GEOGRAPHY,37(6),409-429.
MLA Zhang, Baojun,et al."Effects of initial step height on the headcut erosion of bank gullies: a case study using a 3D photo-reconstruction method in the dry-hot valley region of southwest China".PHYSICAL GEOGRAPHY 37.6(2016):409-429.
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