Clathrate formation and the fate of noble and biologically useful gases
[1] Lake Vostok is a large lake located 4 km beneath the East Antarctic Ice Sheet that should be supersaturated with dissolved gases in equilibrium with clathrate present in the water column. Here we show that if the age of the lake is such that the lake water mass has been cycled over 30 times then...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.499.7793 2023-05-15T14:02:35+02:00 Clathrate formation and the fate of noble and biologically useful gases The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.499.7793 http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.499.7793 http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf al 2002] deep beneath the polar plateau appear to be part text ftciteseerx 2016-01-08T08:59:00Z [1] Lake Vostok is a large lake located 4 km beneath the East Antarctic Ice Sheet that should be supersaturated with dissolved gases in equilibrium with clathrate present in the water column. Here we show that if the age of the lake is such that the lake water mass has been cycled over 30 times then the total dissolved gas equilibrates at about 2.5 liters (STP) of gas per kg of water; high enough to have important implications for drilling into this deep subglacial lake. Different air gases are preferentially incorporated into the clathrate and thus the molar ratios in the water column will reflect the presence of clathrate and indicate a more precise age of the lake. Preferential incorporation of CO2 into the clathrate would result in the clathrate sinking if the carbon input is 1 % of the air input and the lake water is fresh water. The redox state of the lake is set by the high oxygen concentration which is 50 times more than air-equilibrated water and may be a severe biological stress. INDEX Text Antarc* Antarctic Ice Sheet Unknown Antarctic East Antarctic Ice Sheet Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Polar Plateau ENVELOPE(0.000,0.000,-90.000,-90.000) |
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ftciteseerx |
language |
English |
topic |
al 2002] deep beneath the polar plateau appear to be part |
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al 2002] deep beneath the polar plateau appear to be part Clathrate formation and the fate of noble and biologically useful gases |
topic_facet |
al 2002] deep beneath the polar plateau appear to be part |
description |
[1] Lake Vostok is a large lake located 4 km beneath the East Antarctic Ice Sheet that should be supersaturated with dissolved gases in equilibrium with clathrate present in the water column. Here we show that if the age of the lake is such that the lake water mass has been cycled over 30 times then the total dissolved gas equilibrates at about 2.5 liters (STP) of gas per kg of water; high enough to have important implications for drilling into this deep subglacial lake. Different air gases are preferentially incorporated into the clathrate and thus the molar ratios in the water column will reflect the presence of clathrate and indicate a more precise age of the lake. Preferential incorporation of CO2 into the clathrate would result in the clathrate sinking if the carbon input is 1 % of the air input and the lake water is fresh water. The redox state of the lake is set by the high oxygen concentration which is 50 times more than air-equilibrated water and may be a severe biological stress. INDEX |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Clathrate formation and the fate of noble and biologically useful gases |
title_short |
Clathrate formation and the fate of noble and biologically useful gases |
title_full |
Clathrate formation and the fate of noble and biologically useful gases |
title_fullStr |
Clathrate formation and the fate of noble and biologically useful gases |
title_full_unstemmed |
Clathrate formation and the fate of noble and biologically useful gases |
title_sort |
clathrate formation and the fate of noble and biologically useful gases |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.499.7793 http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) ENVELOPE(0.000,0.000,-90.000,-90.000) |
geographic |
Antarctic East Antarctic Ice Sheet Lake Vostok Polar Plateau |
geographic_facet |
Antarctic East Antarctic Ice Sheet Lake Vostok Polar Plateau |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.499.7793 http://www.ifa.hawaii.edu/~meech/a740/2004/fall/papers/2003GRL30-35-1-35-4.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766272906199826432 |