| Equations for the near-surface mass flux density profile of wind-blown sediments | |
| Dong, Zhibao1,2; Lu, Junfeng1; Man, Duoqing1; Lv, Ping1; Qian, Guanqiang1; Zhang, Zhengcai1; Luo, Wanyin1 | |
| 刊名 | EARTH SURFACE PROCESSES AND LANDFORMS
 |
| 2011-08-01 | |
| 卷号 | 36期号:10页码:1292-1299 |
| 关键词 | wind erosion aeolian sediment transport mass flux density profiles |
| ISSN号 | 0197-9337 |
| DOI | 10.1002/esp.2151 |
| 通讯作者 | Dong, Zhibao(zbdong@lzb.ac.cn) |
| 英文摘要 | The erosion of sediment by wind and the resulting mass flux density profile is thought to be described by a mathematical function that bears information on the mechanisms responsible for the movement of individual particles by the wind, and such functions have been studied extensively. In this study several functions are evaluated that have been proposed to describe the variation in mass flux density with height of wind-blown sediment, with the flux containing a mixture of particles in suspension and saltation, based on detailed field data at four land types in the Minqin area of north-western China, where severe wind erosion occurs. High-resolution mass flux density measurements at 50 heights, collected at 20 mm intervals to a height of 1 m above the surface, were obtained using vertically segmented samplers. Three kinds of functions fit the measured flux density profiles reasonably well, but a three-parameter modified exponential function is preferred because it contains fewer coefficients to be defined and provides a reasonably good fit to the measured mass flux density profiles. This and previous conclusions suggest that the decay with height of mass flux density of sediments dominated by saltation particles as in the present study tends to follow a modified exponential function law, but a modified power function law replaces the modified exponential function law when the height extends to a level high enough to be dominated by suspension particles. Copyright (C) 2011 John Wiley & Sons, Ltd. |
| 收录类别 | SCI |
| WOS关键词 | VERTICAL-DISTRIBUTION ; FIELD MEASUREMENT ; EOLIAN SALTATION ; STEADY-STATE ; DUST STORMS ; SAND CLOUD ; EROSION ; TUNNEL ; PARTICLES ; TRANSPORT |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| 出版者 | WILEY-BLACKWELL |
| WOS记录号 | WOS:000292954800002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2556484 |
| 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,Lu, Junfeng,Man, Duoqing,et al. Equations for the near-surface mass flux density profile of wind-blown sediments[J]. EARTH SURFACE PROCESSES AND LANDFORMS,2011,36(10):1292-1299. |
| APA | Dong, Zhibao.,Lu, Junfeng.,Man, Duoqing.,Lv, Ping.,Qian, Guanqiang.,...&Luo, Wanyin.(2011).Equations for the near-surface mass flux density profile of wind-blown sediments.EARTH SURFACE PROCESSES AND LANDFORMS,36(10),1292-1299. |
| MLA | Dong, Zhibao,et al."Equations for the near-surface mass flux density profile of wind-blown sediments".EARTH SURFACE PROCESSES AND LANDFORMS 36.10(2011):1292-1299. |
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