Wind tunnel experiments on vertical distribution of wind-blown sand flux and change of the quantity of sand erosion and deposition above gravel beds under different sand supplies
文献类型：期刊论文
| 作者 | Zhang, Weimin1; Wang, Tao1; Wang, Wanfu2; Liu, Benli1 |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 64期号:4页码:1031-1038 |
| 关键词 | Gravel beds The vertical distribution of wind-blown sand flux Erosion and deposition Sand supply Wind tunnel experiment |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-011-0921-3 |
| 通讯作者 | Zhang, Weimin(weiminzh@lzb.ac.cn) |
| 英文摘要 | Wind tunnel experiments were carried out with respect to the vertical distributions of wind-blown sand flux and the processes of aeolian erosion and deposition under different wind velocities and sand supplies above beds with different gravel coverage. Preliminary results revealed that the vertical distribution of wind-blown sand flux was a way to determine whether the gobi sand stream was the saturated one or not. It had different significances to indicate characteristics of transport and deposition above gobi beds. Whether bed processes are of aeolian erosion or deposition was determined by the sand stream near the surface, especially within 0-6 cm height, while the sand transport was mainly influenced by the sand stream in the saltating layer above the height of 6 cm. The degree of the abundance of sand supply was one of the important factors to determine the saturation level of sand stream, which influenced the characteristic of aeolian erosion and deposition on gravel beds. Given the similar wind condition, the sand transport rates controlled by the saturated flow were between 2 and 8 times of the unsaturated one. Those bed processes controlled by the saturated flow were mainly of deposition, and the amount of sand accumulation increased largely as the wind speed increased. In contrast, the bed processes controlled by the unsaturated flow were mainly of aeolian erosion. Meanwhile, there was an obvious blocking sand ability within the height of 0-2 cm, and the maximal value of sand transport occurred within the surface of 2-5 cm height. |
| 收录类别 | SCI |
| WOS关键词 | TRANSPORT ; SURFACES ; SEDIMENT |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000295845600011 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556572 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang, Weimin |
| 作者单位 | 1.CAS, Cold & Arid Reg Environm & Engn Res Inst, Dunhuang Gobi Desert Res Stn, Lanzhou 730000, Gansu, Peoples R China 2.Conservat Inst Dunhuang Acad, Dunhuang 736200, Gansu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Weimin,Wang, Tao,Wang, Wanfu,et al. Wind tunnel experiments on vertical distribution of wind-blown sand flux and change of the quantity of sand erosion and deposition above gravel beds under different sand supplies[J]. ENVIRONMENTAL EARTH SCIENCES,2011,64(4):1031-1038. |
| APA | Zhang, Weimin,Wang, Tao,Wang, Wanfu,&Liu, Benli.(2011).Wind tunnel experiments on vertical distribution of wind-blown sand flux and change of the quantity of sand erosion and deposition above gravel beds under different sand supplies.ENVIRONMENTAL EARTH SCIENCES,64(4),1031-1038. |
| MLA | Zhang, Weimin,et al."Wind tunnel experiments on vertical distribution of wind-blown sand flux and change of the quantity of sand erosion and deposition above gravel beds under different sand supplies".ENVIRONMENTAL EARTH SCIENCES 64.4(2011):1031-1038. |
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来源：寒区旱区环境与工程研究所
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