Arid
DOI10.5194/tc-9-439-2015
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice
Dugan, H. A.1,2; Doran, P. T.1; Wagner, B.3; Kenig, F.1; Fritsen, C. H.4; Arcone, S. A.5; Kuhn, E.4; Ostrom, N. E.6; Warnock, J. P.7; Murray, A. E.4
通讯作者Dugan, H. A.
来源期刊CRYOSPHERE
ISSN1994-0416
EISSN1994-0424
出版年2015
卷号9期号:2页码:439-450
英文摘要

Lake Vida, located in Victoria Valley, is one of the largest lakes in the McMurdo dry valleys and is known to contain hypersaline liquid brine sealed below 16 m of freshwater ice. For the first time, Lake Vida was drilled to a depth of 27 m. Below 21 m the ice is marked by well-sorted sand layers up to 20 cm thick within a matrix of salty ice. From ice chemistry, isotopic composition of delta O-18 and delta H-2, and ground penetrating radar profiles, we conclude that the entire 27 m of ice formed from surface runoff and the sediment layers represent the accumulation of surface deposits. Radiocarbon and optically stimulated luminescence dating limit the maximum age of the lower ice to 6300 C-14 yr BP. As the ice cover ablated downwards during periods of low surface inflow, progressive accumulation of sediment layers insulated and preserved the ice and brine beneath, analogous to the processes that preserve shallow ground ice. The repetition of these sediment layers reveals hydrologic variability in Victoria Valley during the mid-to late Holocene. Lake Vida is an exemplar site for understanding the preservation of subsurface brine, ice, and sediment in a cold desert environment.


类型Article
语种英语
国家USA ; Germany
收录类别SCI-E
WOS记录号WOS:000353878400002
WOS关键词MCMURDO DRY VALLEYS ; SOUTHERN VICTORIA LAND ; TAYLOR VALLEY ; ISOTOPE GEOCHEMISTRY ; UNIVERSITY VALLEY ; GROUND ICE ; HOARE ; FRYXELL ; DEPOSITS ; QUARTZ
WOS类目Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向Physical Geography ; Geology
来源机构Desert Research Institute
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186625
作者单位1.Univ Illinois, Dept Earth & Environm Sci, Chicago, IL 60607 USA;
2.Univ Wisconsin, Ctr Limnol, Madison, WI 53706 USA;
3.Univ Cologne, Inst Geol & Mineral, D-50931 Cologne, Germany;
4.Univ Nevada, Desert Res Inst, Div Earth & Ecosyst Sci, Reno, NV 89506 USA;
5.US Army, Cold Reg Res & Engn Lab, Hanover, NH 03755 USA;
6.Michigan State Univ, Dept Zool, E Lansing, MI 48824 USA;
7.No Illinois Univ, Dept Geol & Environm Geosci, De Kalb, IL USA
推荐引用方式
GB/T 7714
Dugan, H. A.,Doran, P. T.,Wagner, B.,et al. Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice[J]. Desert Research Institute,2015,9(2):439-450.
APA Dugan, H. A..,Doran, P. T..,Wagner, B..,Kenig, F..,Fritsen, C. H..,...&Murray, A. E..(2015).Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice.CRYOSPHERE,9(2),439-450.
MLA Dugan, H. A.,et al."Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice".CRYOSPHERE 9.2(2015):439-450.
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