DOI: 10.1016/j.gloplacha.2014.11.007
论文题名: The environmental implications for dust in high-alpine snow and ice cores in Asian mountains
作者: Wu G. ; Zhang C. ; Zhang X. ; Xu T. ; Yan N. ; Gao S.
刊名: Global and Planetary Change
ISSN: 0921-8181
出版年: 2015
卷: 124 起始页码: 22
结束页码: 29
语种: 英语
英文关键词: Asian dust
; Element composition
; Ice core
; Implication
Scopus关键词: Arid regions
; Dust
; Exploratory geochemistry
; Landforms
; Snow
; Asian dust
; Element compositions
; Environmental implications
; Geochemical composition
; Ice core
; Implication
; Relative contribution
; Upper troposphere
; Ice
; alpine environment
; chemical composition
; dust
; geochemistry
; ice core
; moraine
; paleoclimate
; rare earth element
; snow
; China
; Muztagata
; Pamirs
; Qilian Mountains
; Tien Shan
; Xinjiang Uygur
英文摘要: Dust in ice cores is an excellent proxy for atmospheric dust and can reveal long-term dust history, but the relative contribution from high mountains close to Asian deserts, such as the Tibetan Plateau, remains uncertain. Here we show that dust from high-alpine snow collected from Eastern Tien Shan (Tian Shan), Eastern Pamirs (Muztagata), and Qilian Shan displays a different geochemical composition (e.g. rare earth elements, REEs) to adjacent moraines and neighboring surface soils, but is similar in composition to the upwind remote arid regions. For high-alpine snow dust, the local contribution from moraines and surface soils is minor, with the major source being the Asian deserts. The results have revealed that the snow dust is representative of mid- and upper troposphere dust from Asian deserts, and demonstrates a weak event-based discrepancy but a strong concentration-independent uniformity in composition in the long-term, and confirm the regional environmental implication for the paleo-climatic records from ice cores. © 2014 Elsevier B.V. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84913593647&doi=10.1016%2fj.gloplacha.2014.11.007&partnerID=40&md5=515f27c27daa92e73e57e8b04b088442
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/11572
Appears in Collections: 全球变化的国际研究计划 气候变化与战略
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作者单位: Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Wu G.,Zhang C.,Zhang X.,et al. The environmental implications for dust in high-alpine snow and ice cores in Asian mountains[J]. Global and Planetary Change,2015-01-01,124.