Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.aeolia.2013.02.006 |
Dust emission controls on the lower Kuiseb River valley, Central Namib | |
Vickery, Kathryn J.; Eckardt, Frank D. | |
通讯作者 | Vickery, Kathryn J. |
来源期刊 | AEOLIAN RESEARCH
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ISSN | 1875-9637 |
EISSN | 2212-1684 |
出版年 | 2013 |
卷号 | 10页码:125-133 |
英文摘要 | Global contemporary dust research has identified large inland basins as significant sources of mineral aerosols in the atmosphere. Smaller fluvial sources have received lesser attention despite their global prevalence. To determine the emissive potential of any dust source requires the identification the hydrologic, synoptic and meteorologic state of the system. This study considers the Kuiseb River, which is a significant dust source in southern Africa, and clearly highlights the fluvial-aeolian link in the emission process and emphasises the supply limited nature of such sources. MODIS satellite imagery combined with synoptic circulation and wind speed data were analysed to establish emission frequency in the context of climatology and flood frequency data. Twenty-two emission events were detected between 2005 and 2008, occurring from April to August, driven by north easterly winds largely associated with west coast troughs and berg winds. The ephemeral flooding of the Kuiseb River was identified as the most likely contributor of sediment to the lower reaches while topographic channelling may enhance the wind flow. (C) 2013 Elsevier B.V. All rights reserved. |
英文关键词 | Desert dust Kuiseb catchment Remote sensing Atmospheric controls MODIS |
类型 | Article |
语种 | 英语 |
国家 | South Africa |
收录类别 | SCI-E |
WOS记录号 | WOS:000322351900013 |
WOS关键词 | AEROSOLS ; CLIMATE ; DESERT ; SEDIMENT ; VELOCITY ; RECHARGE ; PLACE |
WOS类目 | Geography, Physical |
WOS研究方向 | Physical Geography |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/175511 |
作者单位 | Univ Cape Town, Dept Environm & Geog Sci, South Lane Upper Campus,,Private Bag X3, ZA-7700 Cape Town, South Africa |
推荐引用方式 GB/T 7714 | Vickery, Kathryn J.,Eckardt, Frank D.. Dust emission controls on the lower Kuiseb River valley, Central Namib[J],2013,10:125-133. |
APA | Vickery, Kathryn J.,&Eckardt, Frank D..(2013).Dust emission controls on the lower Kuiseb River valley, Central Namib.AEOLIAN RESEARCH,10,125-133. |
MLA | Vickery, Kathryn J.,et al."Dust emission controls on the lower Kuiseb River valley, Central Namib".AEOLIAN RESEARCH 10(2013):125-133. |
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