中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Preliminary results of the close-off depth and the stable isotopic records along a 109.91 m ice core from Dome A, Antarctica

文献类型:期刊论文

作者Hou ShuGui1; Li YuanSheng2; Xiao CunDe1; Pang HongXi3; Xu JianZhong1
刊名SCIENCE IN CHINA SERIES D-EARTH SCIENCES
出版日期2009-10-01
卷号52期号:10页码:1502-1509
关键词Antarctica Dome A ice core close-off depth stable isotopes
ISSN号1006-9313
DOI10.1007/s11430-009-0039-6
通讯作者Hou ShuGui(shugui@lzb.ac.cn)
英文摘要A 109.91 m ice core was recovered from Dome A (or Dome Argus), the highest ice feature in Antarctica, during the 2004/05 austral summer by the 21st Chinese National Antarctic Research Expedition (CHINARE-21). Both methane profile along the core and firn densification model calculation suggest that the close-off depth is at about 102.0 m with an ice age about 4200 a. Stable isotopes (delta O-18 and delta D) of the chips samples produced during each run of ice core drilling at Dome A, together with those of the other cores recovered from the eastern inland Antarctica, suggest a relative stable climate with a temperature fluctuation amplitude about +/-0.6 degrees C at the eastern inland Antarctica during the late Holocene. The average d-excess (or d = delta D-8 delta O-18) of 17.1 parts per thousand along the Dome A core is probably the highest among the Antarctic inland ice cores, which may be resulted from the kinetic fractionation during the snow formation under an oversaturation condition. Moreover, the increasing trend of d-excess during the late Holocene reflects mainly the migration of the water source area for precipitation at Dome A towards low latitudes. This paper presents the first results of a shallow ice core recovered from the unexplored highest area of the Antarctic ice sheet, providing a background for the proposing deep ice core drilling at Dome A.
收录类别SCI
WOS关键词SOUTHERN-HEMISPHERE ; LAST DEGLACIATION ; DEUTERIUM EXCESS ; EAST ANTARCTICA ; FIRN-AIR ; PRECIPITATION ; GREENLAND ; HOLOCENE ; CLIMATE ; MODEL
WOS研究方向Geology
WOS类目Geosciences, Multidisciplinary
语种英语
WOS记录号WOS:000271097800004
出版者SCIENCE PRESS
URI标识http://www.irgrid.ac.cn/handle/1471x/2556230
专题寒区旱区环境与工程研究所
通讯作者Hou ShuGui
作者单位1.Chinese Acad Sci, State Key Lab Cryospher Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China
2.Polar Res Inst China, Shanghai 200129, Peoples R China
3.Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China
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Hou ShuGui,Li YuanSheng,Xiao CunDe,et al. Preliminary results of the close-off depth and the stable isotopic records along a 109.91 m ice core from Dome A, Antarctica[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2009,52(10):1502-1509.
APA Hou ShuGui,Li YuanSheng,Xiao CunDe,Pang HongXi,&Xu JianZhong.(2009).Preliminary results of the close-off depth and the stable isotopic records along a 109.91 m ice core from Dome A, Antarctica.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,52(10),1502-1509.
MLA Hou ShuGui,et al."Preliminary results of the close-off depth and the stable isotopic records along a 109.91 m ice core from Dome A, Antarctica".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 52.10(2009):1502-1509.

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来源:寒区旱区环境与工程研究所

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