Arid
DOI10.1016/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
ISSN1875-9637
EISSN2212-1684
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
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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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