Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice
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...
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ftdoajarticles:oai:doaj.org/article:6e67db19b1a243c898f30986d7d2c06b 2023-05-15T13:57:41+02:00 Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice H. A. Dugan P. T. Doran B. Wagner F. Kenig C. H. Fritsen S. A. Arcone E. Kuhn N. E. Ostrom J. P. Warnock A. E. Murray 2015-03-01T00:00:00Z https://doi.org/10.5194/tc-9-439-2015 https://doaj.org/article/6e67db19b1a243c898f30986d7d2c06b EN eng Copernicus Publications http://www.the-cryosphere.net/9/439/2015/tc-9-439-2015.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-9-439-2015 https://doaj.org/article/6e67db19b1a243c898f30986d7d2c06b The Cryosphere, Vol 9, Iss 2, Pp 439-450 (2015) Environmental sciences GE1-350 Geology QE1-996.5 article 2015 ftdoajarticles https://doi.org/10.5194/tc-9-439-2015 2022-12-30T21:47:17Z 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 δ 18 O and δ 2 H, 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 14 C 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. Article in Journal/Newspaper Antarc* Antarctica McMurdo Dry Valleys The Cryosphere Directory of Open Access Journals: DOAJ Articles McMurdo Dry Valleys Victoria Valley ENVELOPE(162.000,162.000,-77.383,-77.383) Lake Vida ENVELOPE(161.950,161.950,-77.383,-77.383) The Cryosphere 9 2 439 450 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 H. A. Dugan P. T. Doran B. Wagner F. Kenig C. H. Fritsen S. A. Arcone E. Kuhn N. E. Ostrom J. P. Warnock A. E. Murray Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
description |
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 δ 18 O and δ 2 H, 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 14 C 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. |
format |
Article in Journal/Newspaper |
author |
H. A. Dugan P. T. Doran B. Wagner F. Kenig C. H. Fritsen S. A. Arcone E. Kuhn N. E. Ostrom J. P. Warnock A. E. Murray |
author_facet |
H. A. Dugan P. T. Doran B. Wagner F. Kenig C. H. Fritsen S. A. Arcone E. Kuhn N. E. Ostrom J. P. Warnock A. E. Murray |
author_sort |
H. A. Dugan |
title |
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
title_short |
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
title_full |
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
title_fullStr |
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
title_full_unstemmed |
Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice |
title_sort |
stratigraphy of lake vida, antarctica: hydrologic implications of 27 m of ice |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/tc-9-439-2015 https://doaj.org/article/6e67db19b1a243c898f30986d7d2c06b |
long_lat |
ENVELOPE(162.000,162.000,-77.383,-77.383) ENVELOPE(161.950,161.950,-77.383,-77.383) |
geographic |
McMurdo Dry Valleys Victoria Valley Lake Vida |
geographic_facet |
McMurdo Dry Valleys Victoria Valley Lake Vida |
genre |
Antarc* Antarctica McMurdo Dry Valleys The Cryosphere |
genre_facet |
Antarc* Antarctica McMurdo Dry Valleys The Cryosphere |
op_source |
The Cryosphere, Vol 9, Iss 2, Pp 439-450 (2015) |
op_relation |
http://www.the-cryosphere.net/9/439/2015/tc-9-439-2015.pdf https://doaj.org/toc/1994-0416 https://doaj.org/toc/1994-0424 1994-0416 1994-0424 doi:10.5194/tc-9-439-2015 https://doaj.org/article/6e67db19b1a243c898f30986d7d2c06b |
op_doi |
https://doi.org/10.5194/tc-9-439-2015 |
container_title |
The Cryosphere |
container_volume |
9 |
container_issue |
2 |
container_start_page |
439 |
op_container_end_page |
450 |
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1766265495654236160 |