Wind regimes and aeolian geomorphology in the western and southwestern Tengger Desert, NW China
文献类型：期刊论文
| 作者 | Zhang Zheng-Cai; Dong Zhi-Bao; Wen Qing; Jiang Chan-Wen |
| 刊名 | GEOLOGICAL JOURNAL
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 50期号:6页码:707-719 |
| 关键词 | Tengger Desert China wind energy environment dune field patterns aeolian geomorphology |
| ISSN号 | 0072-1050 |
| DOI | 10.1002/gj.2586 |
| 通讯作者 | Zhang Zheng-Cai(zhangzhsi@sina.com) |
| 英文摘要 | Wind is the primary control on the formation of aeolian geomorphology. In this study, we combined wind regime data from automated weather stations in the western and southwestern Tengger Desert of the Inner Mongolia region in China with remote-sensing data to analyse the relationship between the wind energy environment and aeolian geomorphology. Tengger Desert is one of the main dust storm sources in northwestern China. Therefore, efforts aimed at controlling desertification and dust storm require a deeper understanding of the processes that govern the formation and subsequent evolution of dunes in this area. Wind speed was largest in the northwest (3.3 m/s in the Xiqu station) and smallest in the southeast (1.2 m/s in the Haizitan station). Potential sand transport was also largest in the northwest (195 in the Jiahe station) and smallest in the southeast (33 in the Tumen station). The sand-driving wind (5.92 m/s) directions were from the NW and SE quadrant across the study area, at >76% of all sand-driving wind, reaching 99% in the Tumen station. The sand-driving wind in the NW quadrant reached >48%, and in the SE quadrant, >12% of all sand-driving wind in all stations. In the study area, sand dunes included crescent, dune networks, transverse, and coppice dunes. Dune crest directions had similar trends from upwind to downwind, at 133 degrees in the middle region, and 124 degrees in the southwestern region. Mean dune spacing changed with dune patterns; the maximum spacing for crescent dunes was 147 m, for dune networks 118 m, and for transverse dunes it was 77 m. The mean crest length was 124m (maximum) for crescent dunes in the northwest, 121m for transverse dunes, and 84m for dune networks. However, because of gullies in the southern region, the mean crest length was only 58m (least) for the crescent dunes in that area. The defect density ranged from 0.007 to 0.014. The spatial differences in dune patterns reflected the evolution of the dune field, where older dunes had been formed upwind and younger downwind. Copyright (c) 2014 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | DIRECTIONALLY VARYING FLOWS ; DUNE-FIELD PATTERN ; DUNEFIELD ACTIVITY ; CLASTIC SEDIMENTS ; LATE QUATERNARY ; SAND TRANSPORT ; COMPLEX ; PALAEOLAKE ; TRANSVERSE ; ALIGNMENT |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000367658100001 |
| 出版者 | WILEY-BLACKWELL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557124 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhang Zheng-Cai |
| 作者单位 | Chinese Acad Sci, Key Lab Desert & Desertificat, Lanzhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Zheng-Cai,Dong Zhi-Bao,Wen Qing,et al. Wind regimes and aeolian geomorphology in the western and southwestern Tengger Desert, NW China[J]. GEOLOGICAL JOURNAL,2015,50(6):707-719. |
| APA | Zhang Zheng-Cai,Dong Zhi-Bao,Wen Qing,&Jiang Chan-Wen.(2015).Wind regimes and aeolian geomorphology in the western and southwestern Tengger Desert, NW China.GEOLOGICAL JOURNAL,50(6),707-719. |
| MLA | Zhang Zheng-Cai,et al."Wind regimes and aeolian geomorphology in the western and southwestern Tengger Desert, NW China".GEOLOGICAL JOURNAL 50.6(2015):707-719. |
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来源：寒区旱区环境与工程研究所
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