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DOI	10.5194/tc-9-439-2015
	Stratigraphy of Lake Vida, Antarctica: Hydrologic implications of 27 m of ice
	Dugan H.A.; Doran P.T.; Wagner B.; Kenig F.; Fritsen C.H.; Arcone S.A.; Kuhn E.; Ostrom N.E.; Warnock J.P.; Murray A.E.
发表日期	2015
ISSN	19940416
卷号	9 期号:2
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 δ18O and δ2H, 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 14C 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. © Author(s) 2015.
学科领域	brine; cryosphere; Holocene; ice cover; isotopic composition; lacustrine deposit; luminescence dating; radiocarbon dating; runoff; stratigraphy; Antarctica; East Antarctica; Lake Vida; McMurdo Dry Valleys; Victoria Valley [McMurdo Dry Valleys]
语种	英语
scopus关键词	brine; cryosphere; Holocene; ice cover; isotopic composition; lacustrine deposit; luminescence dating; radiocarbon dating; runoff; stratigraphy; Antarctica; East Antarctica; Lake Vida; McMurdo Dry Valleys; Victoria Valley [McMurdo Dry Valleys]
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/119947
作者单位	Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, IL, United States; Center for Limnology, University of Wisconsin-Madison, Madison, WI, United States; Institute of Geology and Mineralogy, University of Cologne, Cologne, Germany; Division of Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV, United States; US Army Cold Regions Research and Engineering Laboratory, Hanover, NH, United States; Department of Zoology, Michigan State University, East Lansing, MI, United States; Department of Geology and Environmental Geosciences, Northern Illinois University, DeKalb, IL, United States
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],2015,9(2).
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).
MLA	Dugan H.A.,et al."Stratigraphy of Lake Vida, Antarctica: Hydrologic implications of 27 m of ice".Cryosphere 9.2(2015).