| Architectural Model of a Dryland Gravel Braided River,based on 3D UAV Oblique Photogrammetric Data: A Case Study of West Dalongkou River in Eastern Xinjiang,China |
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| 作者姓名： | YIN Senlin ZHU Baiyu GUO Haiping XU Zhenhu LI Xiaoshan WU Xiaojun CHEN Yukun JIANG Zhibin |
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| 作者单位： | 1. Institute of Mud-Logging Technology and Engineering, Yangtze University;2. Research Institute of Exploration and Development,Petro China Xinjiang Oilfield Company;3. School of Geo Sciences, Yangtze University |
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| 基金项目： | supported by the National Science and Technology Major Project (Grant No. 2017ZX05008-006004-002)；;the National Natural Science Foundation of China (Grant Nos. 41502126 and 41902155)； |
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| 摘 要： | Three-dimensional unmanned aerial vehicle(UAV) oblique photogrammetric data were used to infer mountainous gravel braided river lithofacies, lithofacies associations and architectural elements. Hierarchical architecture and lithofacies associations with detailed lithofacies characterizations were comprehensively described to document the architectural model, architectural element scale and gravel particle scale.(1) Nine lithofacies(i.e., Gmm, Gcm, Gcc, Gci, Gcl, Ss, Sm, Fsm and Fl) were identifi...
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| 收稿时间： | 2022/2/11 0:00:00 |
| 修稿时间： | 2022/6/9 0:00:00 |
Architectural Model of a Dryland Gravel Braided River, based on 3D UAV Oblique Photogrammetric Data: A Case Study of West Dalongkou River in Eastern Xinjiang, China |
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| Authors: | YIN Senlin ZHU Baiyu GUO Haiping XU Zhenhu LI Xiaoshan WU Xiaojun CHEN Yukun JIANG Zhibin |
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| Institution: | Institute of Mud-Logging Technology and Engineering, Yangtze University, Jingzhou, Hubei 434023, China;Research Institute of Exploration and Development, PetroChina Xinjiang Oilfield Company, Karamay, Xinjiang 834000, China;School of GeoSciences, Yangtze University, Wuhan 430100, China |
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| Abstract: | Three-dimensional unmanned aerial vehicle (UAV) oblique photogrammetric data were used to infer mountainous gravel braided river lithofacies, lithofacies associations and architectural elements. Hierarchical architecture and lithofacies associations with detailed lithofacies characterizations were comprehensively described to document the architectural model, architectural element scale and gravel particle scale. (1) Nine lithofacies (i.e., Gmm, Gcm, Gcc, Gci, Gcl, Ss, Sm, Fsm and Fl) were identified and classified as gravel, sand and fine matrix deposits. These are typical depositional features of a mountainous dryland gravel-braided river. (2) Three architectural elements were identified, including channel (CH), gravel bar (GB) and overbank (OB). CH can be further divided into flow channel and abandoned channel, while GB consists of Central Gravel bar (CGB) and Margin Gravel bar (MGB). (3) The gravel bar is the key architectural element of the gravel braided river, with its geological attributes. The dimensions of GBs and their particles are various, but exhibit good relationships with each other. The grain size of GB decreases downstream, but the dimensions of GB do not. The bank erosion affects the GB dimensions, whereas channel incision and water flow velocity influence the grain size of GB. The conclusions can be applied to the dryland gravel braided river studies in tectonically active areas. |
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| Keywords: | three-dimensional UAV oblique photogrammetry gravel braided river architecture modern deposits West Dalongkou River |
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