Grain size characteristics of aeolian sands and their implications for the aeolian dynamics of dunefields within a river valley on the southern Tibet Plateau: A case study from the Yarlung Zangbo river valley
文献类型：期刊论文
| 作者 | Na Zhou1,2,3; Qing Li4; Zhang, Chun-Lai1; Huang Chi-Hua3; Wu, Yanbing2; Zhu, Bingqi5 ; Cen, Songbo1; Huang, Xiaoqi1
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| 刊名 | CATENA
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| 出版日期 | 2021 |
| 卷号 | 196页码:22 |
| 关键词 | Grain size characteristics Aeolian dunefield Aeolian dynamics Yarlung Zangbo River valley |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2020.104794 |
| 通讯作者 | Zhang, Chun-Lai(clzhang@bnu.edu.cn) |
| 英文摘要 | Typical aeolian landforms have developed in China's Yarlung Zangbo River valley, which is on the Qinghai-Tibet Plateau. Fully understanding the grain size characteristics of these dunefields is the first step to reveal the region's aeolian dynamics. We selected three distinctive dunefields for grain size analysis: the Maquan, Shannan, and Mainling valley dunefields. At the scale of individual dunes, we found a trend for sands on the dune surface, with the sediments gradually becoming finer towards the crest, gradually becoming coarser, or exhibiting an asymmetric M-shaped distribution. In Maquan valley, these patterns resulted from interactions between the local airflow and local sands with a diameter of 2.0-2.5 Phi (177-250 mu m). The asymmetric M-shaped distribution in the Shannan valley was mainly controlled by the positions on a dune and valley winds. The slightly coarser crests in Mainling valley were controlled by sands that are easily entrained by the wind (2.00-3.00 Phi or 125-250 mu m) and that undergo saltation. At a dunefield scale, strong winds that entrained medium sands cause these sands to accumulate downwind in Maquan valley. Multi-directional winds combined with a limited sand supply (1.74-2.30 Phi or 203-299 mu m) favored a stable aeolian environment in Shannan valley. The saltating sands produced by these winds build dunes under a constantly erosive wind regime in Mainling valley. Wind transported interdune sediments is an important local source for building dunes. The gradual variation of grain sizes moving downstream and the distinct evolution history of dunefield in Maquan valley as compared to Shannan and Mainling valleys may suggest the existence of a spatial connection among dune sands along the main stream of the Yarlung Zangbo River. |
| WOS关键词 | PARTICLE-SIZE ; AIR-FLOW ; TRANSVERSE DUNES ; IMPERIAL VALLEY ; TRANSPORT ; GEOMORPHOLOGY ; LEE ; EVOLUTION ; DEPOSITS ; PATTERN |
| 资助项目 | National Natural Science Foundation of China[41401006] ; State Key Laboratory of Earth Surface Processes and Resource Ecology project[2017-KF-02] |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000583955200001 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Earth Surface Processes and Resource Ecology project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/156367]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Zhang, Chun-Lai |
| 作者单位 | 1.Beijing Normal Univ, MOE Engn Res Ctr Desertificat & Blown Sand Contro, State Key Lab Earth Surface Proc & Resource Ecol, 19 Xinjiekou Outer St, Beijing 100875, Peoples R China 2.Hebei Univ Econ & Business, Coll Management Sci & Engn, 47 Xuefu Rd, Shijiazhuang 050000, Hebei, Peoples R China 3.Purdue Univ, USDA ARS Natl Soil Eros ResearchLab, Agron Dept, W Lafayette, IN 47907 USA 4.Hebei Acad Sci, Hebei Engn Res Ctr Geog Informat Applicat, Inst Geog Sci, Xi St 94, Shijiazhuang 050011, Hebei, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11A Datun Rd, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Na Zhou,Qing Li,Zhang, Chun-Lai,et al. Grain size characteristics of aeolian sands and their implications for the aeolian dynamics of dunefields within a river valley on the southern Tibet Plateau: A case study from the Yarlung Zangbo river valley[J]. CATENA,2021,196:22. |
| APA | Na Zhou.,Qing Li.,Zhang, Chun-Lai.,Huang Chi-Hua.,Wu, Yanbing.,...&Huang, Xiaoqi.(2021).Grain size characteristics of aeolian sands and their implications for the aeolian dynamics of dunefields within a river valley on the southern Tibet Plateau: A case study from the Yarlung Zangbo river valley.CATENA,196,22. |
| MLA | Na Zhou,et al."Grain size characteristics of aeolian sands and their implications for the aeolian dynamics of dunefields within a river valley on the southern Tibet Plateau: A case study from the Yarlung Zangbo river valley".CATENA 196(2021):22. |
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来源：地理科学与资源研究所
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