| Horizontal aeolian sediment flux in the Minqin area, a major source of Chinese dust storms | |
| Dong, Zhibao1,2; Man, Duoqing1; Luo, Wanyin1; Qian, Guangqiang1; Wang, Jihe; Zhao, Ming; Liu, Shizeng; Zhu, Guoqinq; Zhu, Shujuan | |
| 刊名 | GEOMORPHOLOGY
 |
| 2010-03-15 | |
| 卷号 | 116期号:1-2页码:58-66 |
| 关键词 | Aeolian sediment transport China Dust flux Dust storms Minqin |
| ISSN号 | 0169-555X |
| DOI | 10.1016/j.geomorph.2009.10.008 |
| 通讯作者 | Dong, Zhibao(zbdong@lzb.ac.cn) |
| 英文摘要 | Minqin has become one of the key dust source areas in China due to its severely degraded eco-environment. However, little is known about how much dust is emitted and transported in this area. Aeolian dust samplers were mounted at 15 heights on a 50 m monitoring tower in Minqin in May 2007 to monitor the horizontal aeolian sediment flux. The monitoring data suggests that the total annual horizontal aeolian sediment flux over Minqin is about 8700 kg m(-1). Of that annual total, the flux in the PM63, PM20, and PM10 size classes amounted to 1730, 780, and 580 kg m(-1) respectively. The flux in May and June accounted for 64% of the annual total, with a minimum in October. The horizontal aeolian sediment flux, including dust flux, decayed rapidly with increasing height following a modified power function, in agreement with the results of several previous studies. The sediment flux in Minqin depends primarily on the wind's characteristics, especially the maximum wind speeds (which create strong aeolian transport). Precipitation in this and region had limited significance for reducing aeolian sediment transport. The mean diameter, standard deviation, skewness, and kurtosis of the aeolian sediments varied with height, but varied most significantly within 9 m above the surface. The mean diameter of the aeolian sediment ranged from 20 mu m (5.6 circle divide) to 95 mu m (3.4 circle divide), and thus primarily represents suspended dust, even though coarse particles of organic and salt aggregates are also present. (C) 2009 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | WIND-TUNNEL ; VERTICAL-DISTRIBUTION ; DESERT ; FIELD ; TRANSPORT ; VELOCITY ; SAMPLER ; SOIL |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000275595000006 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2556399 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Dong, Zhibao |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Desert & Desertificat, Lanzhou 730000, Gansu, Peoples R China 2.Shaanxi Normal Univ, Dept Geog, Xian, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Zhibao,Man, Duoqing,Luo, Wanyin,et al. Horizontal aeolian sediment flux in the Minqin area, a major source of Chinese dust storms[J]. GEOMORPHOLOGY,2010,116(1-2):58-66. |
| APA | Dong, Zhibao.,Man, Duoqing.,Luo, Wanyin.,Qian, Guangqiang.,Wang, Jihe.,...&Zhu, Shujuan.(2010).Horizontal aeolian sediment flux in the Minqin area, a major source of Chinese dust storms.GEOMORPHOLOGY,116(1-2),58-66. |
| MLA | Dong, Zhibao,et al."Horizontal aeolian sediment flux in the Minqin area, a major source of Chinese dust storms".GEOMORPHOLOGY 116.1-2(2010):58-66. |
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