Arid
DOI10.1016/j.quaint.2015.12.103
Aeolian dust deposition in the southern Aral Sea region (Uzbekistan): Ground-based monitoring results from the LUCA project
Opp, Christian1; Groll, Michael1; Aslanov, Ilkhom1; Lotz, Tom1; Vereshagina, Nataliya2
通讯作者Opp, Christian
来源期刊QUATERNARY INTERNATIONAL
ISSN1040-6182
EISSN1873-4553
出版年2017
卷号429页码:86-99
英文摘要

As larger parts of the former Aral Sea have been desiccated, more (and harmful) dust storms (DS) and dust deposition (DD) occur more frequently in the surrounding area. Due to the prevalent wind directions, the southern Aral Sea region is affected stronger by these DS and DD as other areas around the former Aral Sea. The densely populated study area belongs to the autonomous republic of Karakalpakstan and the autonomous oblast (district) Khorezm within the Republic of Uzbekistan. For improving the knowledge about the spatial and temporal distribution of DD in the study region, seven sampling stations of the Uzbek meteorological survey have been equipped with passive deposition samplers between 2003 and 2012. The monthly amount of dust, the grain sizes, the mineralogical and chemical composition were determined and in several cases individual dust storm events were analyzed as well. Although the monthly average dust deposition was relatively low (598.4 kg/ha), the peak deposition during dust storms was up to 160 times higher than this average. While the seasonal DD rate was increasing from spring to fall, the health related threshold excess showed the highest intensity during spring and summer. At most stations the grain size composition of the dust samples (85-90% are silt and clay dominated) was very similar to the composition of the near surface soils. The stations Muynak and Jaslyk, representing dust originating from the Aral Kum, are characterized by dust rich in HCO3, SO4 and Ca. Among the trace elements, heavy metals were analyzed because of their health-affecting potential. The total heavy metal concentrations in the southern Aral Sea region are relatively low compared to the results from other parts of Uzbekistan. Zinc showed the greatest dominance close to the Aral Kum, while chromium on the other hand increased its percentage with a growing distance to the former Aral Sea. The spatial and temporal dynamics of the dust deposition as well as the distribution of heavy metals indicate a further need for ground based research for the improvement of the database and a better understanding of the dust mobilization, transport and deposition mechanisms in the Aral Kum and the southern Aral Sea region. (C) 2016 Elsevier Ltd and INQUA. All rights reserved.


英文关键词Dust deposition Central Asia Aral Kum Monitoring Deposition dynamics
类型Article
语种英语
国家Germany ; Uzbekistan
收录类别SCI-E
WOS记录号WOS:000397931400009
WOS关键词CENTRAL-ASIA ; RESPIRATORY HEALTH ; AIRBORNE DUST ; STORMS ; DYNAMICS ; DESERTIFICATION ; DESICCATION ; EXPOSURE ; BASIN
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/201784
作者单位1.Philipps Univ, Fac Geog, Deutschhausstr 10, D-35037 Marburg, Germany;
2.Hydrometeorol Res Inst, Dept Environm Pollut Invest & Forecasts, Tashkent, Uzbekistan
推荐引用方式
GB/T 7714
Opp, Christian,Groll, Michael,Aslanov, Ilkhom,et al. Aeolian dust deposition in the southern Aral Sea region (Uzbekistan): Ground-based monitoring results from the LUCA project[J],2017,429:86-99.
APA Opp, Christian,Groll, Michael,Aslanov, Ilkhom,Lotz, Tom,&Vereshagina, Nataliya.(2017).Aeolian dust deposition in the southern Aral Sea region (Uzbekistan): Ground-based monitoring results from the LUCA project.QUATERNARY INTERNATIONAL,429,86-99.
MLA Opp, Christian,et al."Aeolian dust deposition in the southern Aral Sea region (Uzbekistan): Ground-based monitoring results from the LUCA project".QUATERNARY INTERNATIONAL 429(2017):86-99.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Opp, Christian]的文章
[Groll, Michael]的文章
[Aslanov, Ilkhom]的文章
百度学术
百度学术中相似的文章
[Opp, Christian]的文章
[Groll, Michael]的文章
[Aslanov, Ilkhom]的文章
必应学术
必应学术中相似的文章
[Opp, Christian]的文章
[Groll, Michael]的文章
[Aslanov, Ilkhom]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。