Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions
Lake Hoare is one of a number of ice-covered polar lakes in the Dry Valley Region of southern Victoria Land, Antarctica. Analysis of N2, O2, and Ar in bubbles from this lake's ice indicates that while O2 is about 2.4 times supersaturated in the water below the ice, only 11 percent of the O2 inp...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19920038874 2023-05-15T14:03:21+02:00 Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions Craig, H. Wharton, R. A., Jr. Mckay, C. P. Unclassified, Unlimited, Publicly available Jan 17, 1992 http://ntrs.nasa.gov/search.jsp?R=19920038874 unknown http://ntrs.nasa.gov/search.jsp?R=19920038874 Accession ID: 92A21498 Copyright Other Sources 55 Science; 255; 318-321 1992 ftnasantrs 2012-02-15T19:28:04Z Lake Hoare is one of a number of ice-covered polar lakes in the Dry Valley Region of southern Victoria Land, Antarctica. Analysis of N2, O2, and Ar in bubbles from this lake's ice indicates that while O2 is about 2.4 times supersaturated in the water below the ice, only 11 percent of the O2 input to this lake is due to biological activity and the balance is derived from meltwater inflow. In Lake Hoare, as much as 70 percent of total gas loss may occur by advection through the ice cover; the remaining gas fractions are removed by respiration at the lower boundary in the case of O2, and by molecular exchange with the atmosphere in the peripheral summer moat around the ice. Other/Unknown Material Antarc* Antarctic Antarctica Victoria Land NASA Technical Reports Server (NTRS) Antarctic Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Lake Hoare ENVELOPE(162.850,162.850,-77.633,-77.633) Victoria Land |
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Open Polar |
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NASA Technical Reports Server (NTRS) |
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55 |
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55 Craig, H. Wharton, R. A., Jr. Mckay, C. P. Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
topic_facet |
55 |
description |
Lake Hoare is one of a number of ice-covered polar lakes in the Dry Valley Region of southern Victoria Land, Antarctica. Analysis of N2, O2, and Ar in bubbles from this lake's ice indicates that while O2 is about 2.4 times supersaturated in the water below the ice, only 11 percent of the O2 input to this lake is due to biological activity and the balance is derived from meltwater inflow. In Lake Hoare, as much as 70 percent of total gas loss may occur by advection through the ice cover; the remaining gas fractions are removed by respiration at the lower boundary in the case of O2, and by molecular exchange with the atmosphere in the peripheral summer moat around the ice. |
format |
Other/Unknown Material |
author |
Craig, H. Wharton, R. A., Jr. Mckay, C. P. |
author_facet |
Craig, H. Wharton, R. A., Jr. Mckay, C. P. |
author_sort |
Craig, H. |
title |
Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
title_short |
Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
title_full |
Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
title_fullStr |
Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
title_full_unstemmed |
Oxygen supersaturation in ice-covered Antarctic lakes - Biological versus physical contributions |
title_sort |
oxygen supersaturation in ice-covered antarctic lakes - biological versus physical contributions |
publishDate |
1992 |
url |
http://ntrs.nasa.gov/search.jsp?R=19920038874 |
op_coverage |
Unclassified, Unlimited, Publicly available |
long_lat |
ENVELOPE(162.850,162.850,-77.633,-77.633) ENVELOPE(162.850,162.850,-77.633,-77.633) |
geographic |
Antarctic Hoare Lake Hoare Victoria Land |
geographic_facet |
Antarctic Hoare Lake Hoare Victoria Land |
genre |
Antarc* Antarctic Antarctica Victoria Land |
genre_facet |
Antarc* Antarctic Antarctica Victoria Land |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19920038874 Accession ID: 92A21498 |
op_rights |
Copyright |
_version_ |
1766273975954964480 |