DOI: 10.5194/tc-8-931-2014
Scopus记录号: 2-s2.0-84901401104
论文题名: Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect
作者: Khodzher T ; V ; , Golobokova L ; P ; , Osipov E ; Yu ; , Shibaev Yu ; A ; , Lipenkov V ; Ya ; , Osipova O ; P ; , Petit J ; R
刊名: Cryosphere
ISSN: 19940416
出版年: 2014
卷: 8, 期: 3 起始页码: 931
结束页码: 939
语种: 英语
英文关键词: 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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74844
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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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
Recommended Citation:
Khodzher T,V,, Golobokova L,et al. Spatial-temporal dynamics of chemical composition of surface snow in East Antarctica along the Progress station-Vostok station transect[J]. Cryosphere,2014-01-01,8(3)