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
文献类型：期刊论文
| 作者 | Zhang, Baojun1,2 ; Xiong, Donghong1; Su, Zhengan1; Yang, Dan1,2; Dong, Yifan1; Xiao, Liang1,2; Zhang, Su1,2; Shi, Liangtao3
|
| 刊名 | PHYSICAL GEOGRAPHY
 |
| 出版日期 | 2016 |
| 卷号 | 37期号:6页码:409-429 |
| 关键词 | Initial step height 3D photo-reconstruction method plunge pool development Gully headcut erosion |
| ISSN号 | 0272-3646 |
| 通讯作者 | Xiong, Donghong |
| 英文摘要 | Headcut 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. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences |
| 类目[WOS] | Environmental Sciences ; Geography, Physical ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Physical Geography ; Geology ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | UPLAND CONCENTRATED FLOWS ; PLUNGE POOL SCOUR ; RETREAT RATES ; AERIAL PHOTOGRAPHS ; PHOTOGRAMMETRY ; HYDRAULICS ; DOWNSTREAM ; MORPHOLOGY ; MIGRATION ; ACCURACY |
| 收录类别 | SCI |
| 原文出处 | http://www.tandfonline.com/doi/full/10.1080/02723646.2016.1219939 |
| 语种 | 英语 |
| WOS记录号 | WOS:000386710100003 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/17571]  |
| 专题 | 成都山地灾害与环境研究所_山地灾害与地表过程重点实验室 |
| 作者单位 | 1.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 |
| 推荐引用方式 GB/T 7714 | 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. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。