Arid
DOI10.1007/s12517-015-2182-z
Temporal and spatial assessment of pollen, radionuclides, minerals and trace elements in deposited dust within Kuwait
Al-Dousari, Ali M.; Aba, Abdulaziz; Al-Awadhi, Safaa; Ahmed, Modi; Al-Dousari, Noor
通讯作者Al-Dousari, Ali M.
来源期刊ARABIAN JOURNAL OF GEOSCIENCES
ISSN1866-7511
EISSN1866-7538
出版年2016
卷号9期号:2
英文摘要

Sixty-seven dust collectors were installed in 47 sites all over Kuwait. Nine of these sites contain four collectors for radionuclide collection. The monitoring of dust fallout and associated pollen was conducted for 2 years from August 2009 to August 2011. The highest dust depositional rates were detected within the western areas of Kuwait. The annual amount of dust in Kuwait varies from 10 to 1065 unit with an average of 278 t/km(2). The year 2010-2011 was found dustier compared to 2009-2010 by 43 %. The analysis leads to a conclusion that the northwestern, western, and northern winds play a key role in producing dust within Kuwait. Regional areas represent the dominant sources of dust fallout, while local sources contribute appreciable amounts. The very fine and fine sand particles originate from local sources as they move in the form of saltation for a short distance and represent 37 % of the average dust fallout percentages in Kuwait. There is a trend of fining in mean size of dust particles towards the east and the northeast. Mineralogically, carbonates and quartz are the major components of dust in Kuwait, feldspars are found in considerable amounts. Other minerals in the dust are gypsum, anhydrite, bassonite and heavy minerals. Carbonates are more and quartz is less towards the coastal areas compared to desert areas. Natural K-40 and Pb-210, man-made (anthropogenic) Cs-137, and cosmogenic Be-7 radionuclides were determined. The average monthly depositional rates were 35.4, 11.2, 13.2 and 0.3 Bq m(-2) for 7Be, Pb-210, K-40 and Cs-137, respectively, which are were comparable to similar climatologically areas around the globe. Pollen originates predominantly from regional sources. However, the presence of a large amount of pollen from Haloxylon sp. Cyperus sp. indicates that close-by regional and local areas are a major contributor of fallen dust.


英文关键词Dust fallout Saltation Suspension Radionuclide Pollen
类型Article
语种英语
国家Kuwait
收录类别SCI-E
WOS记录号WOS:000371380500013
WOS关键词FALLOUT ; MODEL
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191401
作者单位Kuwait Inst Sci Res, Crisis Decis Support Program, Environm & Life Sci Res Ctr, POB 24885, Safat 13109, Kuwait
推荐引用方式
GB/T 7714
Al-Dousari, Ali M.,Aba, Abdulaziz,Al-Awadhi, Safaa,et al. Temporal and spatial assessment of pollen, radionuclides, minerals and trace elements in deposited dust within Kuwait[J],2016,9(2).
APA Al-Dousari, Ali M.,Aba, Abdulaziz,Al-Awadhi, Safaa,Ahmed, Modi,&Al-Dousari, Noor.(2016).Temporal and spatial assessment of pollen, radionuclides, minerals and trace elements in deposited dust within Kuwait.ARABIAN JOURNAL OF GEOSCIENCES,9(2).
MLA Al-Dousari, Ali M.,et al."Temporal and spatial assessment of pollen, radionuclides, minerals and trace elements in deposited dust within Kuwait".ARABIAN JOURNAL OF GEOSCIENCES 9.2(2016).
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