Arid
DOI10.1016/j.aeolia.2014.01.002
The characterization and role of aeolian deposition on water quality, McMurdo Dry Valleys, Antarctica
Deuerling, K. M.; Lyons, W. B.; Welch, S. A.; Welch, K. A.
通讯作者Deuerling, K. M.
来源期刊AEOLIAN RESEARCH
ISSN1875-9637
EISSN2212-1684
出版年2014
卷号13页码:7-17
英文摘要

The connection of ecosystems by wind-driven transport of material has become a topic of increasing interest and importance. Less than 1% of dust transported worldwide is exported to the Southern Ocean and Antarctic cryosphere; however, aeolian transport on the Antarctic continent is predominantly locally derived from the abrasion of bedrock. The deposition of the aeolian material is integral to nutrient and solute dispersal in the Antarctic ecosystem. This is particularly true in the ice-free areas of Antarctica, such as the McMurdo Dry Valleys (MDV), where aeolian material deposited in the aquatic system is solubilized during the melt season. The material is predominantly locally-derived from the abrasion of bedrock. In this study, a two-step leaching experiment simulates the melt season and we quantify the flux of solutes and nutrients to the aquatic ecosystem. Soluble salts were removed from the aeolian material first during cold water leaching followed by an increase in carbonate and silicate dissolution during freezethaw. Major ion fluxes on glaciers and lakes are at least two orders of magnitude greater than nutrient fluxes. However, the fluxes derived from these experiments are less than the estimated flux from streams to lakes and probably represent minima. Aeolian redistribution of local soils is important because they are the only source of new solutes and nutrients to the aquatic ecosystem of the MDV. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Aeolian transport Dust Cryosphere Antarctica Dissolution
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000338811900002
WOS关键词SOUTHERN VICTORIA LAND ; TAYLOR VALLEY ; POLAR-DESERT ; MELTWATER STREAMS ; EOLIAN SEDIMENT ; SAND TRANSPORT ; LAKE HOARE ; CLIMATE ; IRON ; EVOLUTION
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/2XILL650/180424
作者单位Ohio State Univ, Byrd Polar Res Ctr, Columbus, OH 43210 USA
推荐引用方式
GB/T 7714
Deuerling, K. M.,Lyons, W. B.,Welch, S. A.,et al. The characterization and role of aeolian deposition on water quality, McMurdo Dry Valleys, Antarctica[J],2014,13:7-17.
APA Deuerling, K. M.,Lyons, W. B.,Welch, S. A.,&Welch, K. A..(2014).The characterization and role of aeolian deposition on water quality, McMurdo Dry Valleys, Antarctica.AEOLIAN RESEARCH,13,7-17.
MLA Deuerling, K. M.,et al."The characterization and role of aeolian deposition on water quality, McMurdo Dry Valleys, Antarctica".AEOLIAN RESEARCH 13(2014):7-17.
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