Arid
DOI10.5194/acp-13-1797-2013
Using the significant dust deposition event on the glaciers of Mt. Elbrus, Caucasus Mountains, Russia on 5 May 2009 to develop a method for dating and "provenancing" of desert dust events recorded in snow pack
Shahgedanova, M.1,2; Kutuzov, S.1,2,3; White, K. H.1,2; Nosenko, G.3
通讯作者Shahgedanova, M.
来源期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2013
卷号13期号:4页码:1797-1808
英文摘要

A significant desert dust deposition event occurred on Mt. Elbrus, Caucasus Mountains, Russia on 5 May 2009, where the deposited dust later appeared as a brown layer in the snow pack. An examination of dust transportation history and analysis of chemical and physical properties of the deposited dust were used to develop a new approach for high-resolution "provenancing" of dust deposition events recorded in snow pack using multiple independent techniques. A combination of SEVIRI red-green-blue composite imagery, MODIS atmospheric optical depth fields derived using the Deep Blue algorithm, air mass trajectories derived with HYSPLIT model and analysis of meteorological data enabled identification of dust source regions with high temporal (hours) and spatial (ca. 100 km) resolution. Dust, deposited on 5 May 2009, originated in the foothills of the Djebel Akhdar in eastern Libya where dust sources were activated by the intrusion of cold air from the Mediterranean Sea and Saharan low pressure system and transported to the Caucasus along the eastern Mediterranean coast, Syria and Turkey. Particles with an average diameter below 8 mu m accounted for 90% of the measured particles in the sample with a mean of 3.58 mu m, median 2.48 mu m. The chemical signature of this long-travelled dust was significantly different from the locally-produced dust and close to that of soils collected in a palaeolake in the source region, in concentrations of hematite. Potential addition of dust from a secondary source in northern Mesopotamia introduced uncertainty in the "provenancing" of dust from this event. Nevertheless, the approach adopted here enables other dust horizons in the snowpack to be linked to specific dust transport events recorded in remote sensing and meteorological data archives.


类型Article
语种英语
国家England ; Russia
收录类别SCI-E
WOS记录号WOS:000315406600007
WOS关键词PARTICLES ; TRANSPORT ; AEROSOLS ; SIZE ; SATELLITE ; HISTORY ; AFRICA ; SAHARA ; STORM ; ALPS
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175977
作者单位1.Univ Reading, Dept Geog & Environm Sci, Reading, Berks, England;
2.Univ Reading, Walker Inst Climate Syst Res, Reading, Berks, England;
3.Russian Acad Sci, Inst Geog, Lab Glaciol, Moscow V71, Russia
推荐引用方式
GB/T 7714
Shahgedanova, M.,Kutuzov, S.,White, K. H.,et al. Using the significant dust deposition event on the glaciers of Mt. Elbrus, Caucasus Mountains, Russia on 5 May 2009 to develop a method for dating and "provenancing" of desert dust events recorded in snow pack[J],2013,13(4):1797-1808.
APA Shahgedanova, M.,Kutuzov, S.,White, K. H.,&Nosenko, G..(2013).Using the significant dust deposition event on the glaciers of Mt. Elbrus, Caucasus Mountains, Russia on 5 May 2009 to develop a method for dating and "provenancing" of desert dust events recorded in snow pack.ATMOSPHERIC CHEMISTRY AND PHYSICS,13(4),1797-1808.
MLA Shahgedanova, M.,et al."Using the significant dust deposition event on the glaciers of Mt. Elbrus, Caucasus Mountains, Russia on 5 May 2009 to develop a method for dating and "provenancing" of desert dust events recorded in snow pack".ATMOSPHERIC CHEMISTRY AND PHYSICS 13.4(2013):1797-1808.
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