气候变化领域集成服务门户(CCPortal): Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect

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DOI	10.5194/tc-8-931-2014
	Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect
	Khodzher T.V.; Golobokova L.P.; Osipov E.Yu.; Shibaev Yu.A.; Lipenkov V.Ya.; Osipova O.P.; Petit J.R.
发表日期	2014
ISSN	19940416
卷号	8 期号:3
英文摘要	In January of 2008, during the 53rd Russian Antarctic Expedition, surface snow samples were taken from 13 shallow (0.7 to 1.5 m depth) snow pits along the first tractor traverse from Progress to Vostok stations, East Antarctica. Sub-surface snow/firn layers are dated from 2.1 to 18 yr. The total length of the coast to inland traverse is more than 1280 km. Here we analysed spatial variability of concentrations of sulphate ions and elements and their fluxes in the snow deposited within the 2006-2008 time interval. Anions were analysed by high-performance liquid chromatography (HPLC), and the determination of selected metals, including Na, K, Mg, Ca and Al, was carried out by mass spectroscopy with atomization by induced coupled plasma (ICP-MS). Surface snow concentration records were examined for trends versus distance inland, elevation, accumulation rate and slope gradient. Na shows a significant positive correlation with accumulation rate, which decreases as distance from the sea and altitude increase. K, Ca and Mg concentrations do not show any significant relationship either with distance inland or with elevation. Maximal concentrations of these elements with a prominent Al peak are revealed in the middle part of the traverse (500-600 km from the coast). Analysis of element correlations and atmospheric circulation patterns allow us to suggest their terrestrial origin (e.g. aluminosilicates carried as a continental dust) from the Antarctic nunatak areas. Sulphate concentrations show no significant relationship with distance inland, elevation, slope gradient and accumulation rate. Non-sea salt secondary sulphate is the most important contribution to the total sulphate budget along the traverse. Sulphate of volcanic origin attributed to the Pinatubo eruption (1991) was revealed in the snow pit at 1276 km (depth 120-130 cm). © Author(s) 2014.
学科领域	aluminum; atmospheric circulation; calcium; chemical composition; firn; inductively coupled plasma method; liquid chromatography; nunatak; slope angle; snow accumulation; snow cover; spatial variation; sulfate; temporal variation; transect; volcanic eruption; Antarctica; Central Luzon; East Antarctica; Luzon; Mount Pinatubo; Philippines; Vostok Station; Zambales
语种	英语
scopus关键词	aluminum; atmospheric circulation; calcium; chemical composition; firn; inductively coupled plasma method; liquid chromatography; nunatak; slope angle; snow accumulation; snow cover; spatial variation; sulfate; temporal variation; transect; volcanic eruption; Antarctica; Central Luzon; East Antarctica; Luzon; Mount Pinatubo; Philippines; Vostok Station; Zambales
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/120109
作者单位	Limnological Institute SB RAS, Irkutsk, Russian Federation; Arctic Antarctic Research Institute, St. Petersburg, Russian Federation; V.B. Sochava Institute of Geography SB RAS, Irkutsk, Russian Federation; Laboratory of Glaciology and Environmental Geophysics, Grenoble, France
推荐引用方式 GB/T 7714	Khodzher T.V.,Golobokova L.P.,Osipov E.Yu.,et al. Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect[J],2014,8(3).
APA	Khodzher T.V..,Golobokova L.P..,Osipov E.Yu..,Shibaev Yu.A..,Lipenkov V.Ya..,...&Petit J.R..(2014).Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect.Cryosphere,8(3).
MLA	Khodzher T.V.,et al."Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect".Cryosphere 8.3(2014).