Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/101976
Title: Helium and Neon in the Accreted Ice of the Subglacial Antarctic Lake Vostok
Authors: Jean-Baptiste, P.
Fourré, E.
Petit, J. R.
Lipenkov, V.
Bulat, S.
Chetverikov, Y.
Raynaud, D.
Issue Date: 2018
Publisher: Blackwell Publishing Ltd
Citation: Helium and Neon in the Accreted Ice of the Subglacial Antarctic Lake Vostok / P. Jean-Baptiste, E. Fourré, J. R. Petit, et al. — DOI 10.1029/2018GL078068 // Geophysical Research Letters. — 2018. — Vol. 45. — Iss. 10. — P. 4927-4932.
Abstract: We analyzed helium and neon in 24 samples from between 3,607 and 3,767 m (i.e., down to 2 m above the lake-ice interface) of the accreted ice frozen to the ceiling of Lake Vostok. Within uncertainties, the neon budget of the lake is balanced, the neon supplied to the lake by the melting of glacier ice being compensated by the neon exported by lake ice. The helium concentration in the lake is about 12 times more than in the glacier ice, with a measured 3He/4He ratio of 0.12 ± 0.01 Ra. This shows that Lake Vostok's waters are enriched by a terrigenic helium source. The 3He/4He isotope ratio of this helium source was determined. Its radiogenic value (0.057 × Ra) is typical of an old continental province, ruling out any magmatic activity associated with the tectonic structure of the lake. It corresponds to a low geothermal heat flow estimated at 51 mW/m2. ©2018. American Geophysical Union. All Rights Reserved.
Keywords: BUDGET CONTROL
GEOTHERMAL ENERGY
GEOTHERMAL HEATING
HELIUM
LAKES
NEON
GLACIER ICE
HELIUM CONCENTRATIONS
ISOTOPE RATIO
LAKE VOSTOK
MAGMATIC ACTIVITY
RADIOGENIC VALUES
TECTONIC STRUCTURE
ICE
ACCRETION
CONCENTRATION (COMPOSITION)
GLACIAL LAKE
HEAT FLOW
HELIUM
ICE
MAGMATISM
MELTING
NEON
SUBGLACIAL ENVIRONMENT
TECTONIC STRUCTURE
ANTARCTICA
EAST ANTARCTICA
LAKE VOSTOK
CALLUNA VULGARIS
URI: http://hdl.handle.net/10995/101976
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85047741270
PURE ID: 7422868
dc5aebff-abce-4df7-aa49-a7c0650ac577
ISSN: 948276
DOI: 10.1029/2018GL078068
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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