DOI: 10.5194/tc-8-843-2014
Scopus记录号: 2-s2.0-84900398311
论文题名: High-resolution 900 year volcanic and climatic record from the Vostok area, East Antarctica
作者: Osipov E ; Y ; , Khodzher T ; V ; , Golobokova L ; P ; , Onischuk N ; A ; , Lipenkov V ; Y ; , Ekaykin A ; A ; , Shibaev Y ; A ; , Osipova O ; P
刊名: Cryosphere
ISSN: 19940416
出版年: 2014
卷: 8, 期: 3 起始页码: 843
结束页码: 851
语种: 英语
英文关键词: atmospheric circulation
; atmospheric transport
; core analysis
; firn
; geological record
; ice core
; ion chromatography
; snow accumulation
; Antarctica
; Dome Concordia
; East Antarctica
; South Pole
; Talos Dome
; Vostok Station
英文摘要: Ion chromatography measurements of 1730 snow and firn samples obtained from three short cores and one pit in the Vostok station area, East Antarctica, allowed for the production of the combined volcanic record of the last 900 years (AD 1093-2010). The resolution of the record is 2-3 samples per accumulation year. In total, 24 volcanic events have been identified, including seven well-known low-latitude eruptions (Pinatubo 1991, Agung 1963, Krakatoa 1883, Tambora 1815, Huanaputina 1600, Kuwae 1452, El Chichon 1259) found in most of the polar ice cores. In comparison with three other East Antarctic volcanic records (South Pole, Plateau Remote and Dome C), the Vostok record contains more events within the last 900 years. The differences between the records may be explained by local glaciological conditions, volcanic detection methodology, and, probably, differences in atmospheric circulation patterns. The strongest volcanic signal (both in sulfate concentration and flux) was attributed to the AD 1452 Kuwae eruption, similar to the Plateau Remote and Talos Dome records. The average snow accumulation rate calculated between volcanic stratigraphic horizons for the period AD 1260-2010 is 20.9 mm H2O. Positive (+13%) anomalies of snow accumulation were found for AD 1661-1815 and AD 1992-2010, and negative (-12%) for AD 1260-1601. We hypothesized that the changes in snow accumulation are associated with regional peculiarities in atmospheric transport. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/74851
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 and Antarctic Institute, Saint Petersburg, Russian Federation; V.B. Sochava Institute of Geography, SB RAS, Irkutsk, Russian Federation
Recommended Citation:
Osipov E,Y,, Khodzher T,et al. High-resolution 900 year volcanic and climatic record from the Vostok area, East Antarctica[J]. Cryosphere,2014-01-01,8(3)