Dynamic processes of a simple linear dune - a study in the Taklimakan Sand Sea, China
文献类型：期刊论文
| 作者 | Wang, XM; Dong, ZB; Qu, JJ; Zhang, JW; Zhao, AG |
| 刊名 | GEOMORPHOLOGY
 |
| 出版日期 | 2003-06-16 |
| 卷号 | 52期号:3-4页码:233-241 |
| 关键词 | linear dunes dynamic processes Taklimakan Sand Sea |
| ISSN号 | 0169-555X |
| DOI | 10.1016/S0169-555X(02)00258-1 |
| 通讯作者 | Wang, XM() |
| 英文摘要 | Samples of dune sands, surveys of the morphology and field measurements of wind velocity and direction of a simple linear dune in Taklimakan Sand Sea show that the airflow and sand flux vary with the change of wind direction on the dune surface. Decrease of the airflow stress on the lee flank does not result in much decrease of the sand flux because of the low threshold shear velocities and the airflow conditions. There are no significant relations between the sand flux on the lee flank and the angle of incidence of the airflow. The low threshold shear velocities and the maintenance of the sand flux at the lee flank are the main mechanisms keeping the linear shape of the dunes. Measurements of the sand flux shows that it reaches a maximum on the crest of the dune. The grain size of the transported sands has some differences compared to that of the dune surface. The sands transported are finer than that on the dune surface, but better sorted under the influence of the medium to low wind activity. The field experiment results exhibit that it is possible for the dunes to be shaped as linear dunes during the processes of accumulation and elongation. (C) 2002 Elsevier Science B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | AIR-FLOW ; SEDIMENT TRANSPORT ; STOSS SLOPE ; BOUNDARY-LAYER ; REVERSING DUNE ; SURFACE CHANGE ; PARTICLE-SIZE ; BARCHAN DUNE ; SILVER-PEAK ; DESERT |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000183675700005 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2556825 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wang, XM |
| 作者单位 | 1.Chinese Acad Sci, Lab Blown Sand Phys & Desert environm, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lanzhou Univ, Dept Geog, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, XM,Dong, ZB,Qu, JJ,et al. Dynamic processes of a simple linear dune - a study in the Taklimakan Sand Sea, China[J]. GEOMORPHOLOGY,2003,52(3-4):233-241. |
| APA | Wang, XM,Dong, ZB,Qu, JJ,Zhang, JW,&Zhao, AG.(2003).Dynamic processes of a simple linear dune - a study in the Taklimakan Sand Sea, China.GEOMORPHOLOGY,52(3-4),233-241. |
| MLA | Wang, XM,et al."Dynamic processes of a simple linear dune - a study in the Taklimakan Sand Sea, China".GEOMORPHOLOGY 52.3-4(2003):233-241. |
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来源：寒区旱区环境与工程研究所
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