PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA
Lake Bonney is a permanently ice‐covered lake of 3.2 km 2 in upper Taylor Valley, Victoria Land, Antarctica. The mean depth, without ice cover, is 18.7 m. The lake probably occupies a glacially overdeepened valley. The lake is meromictic. The maximal temperature of 7C coincides with the chemocline a...
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crwiley:10.4319/lo.1964.9.2.0207 2024-09-15T17:47:02+00:00 PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA Angino, Ernest E. Armitage, Kenneth B. Tash, Jerry C. 1964 http://dx.doi.org/10.4319/lo.1964.9.2.0207 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1964.9.2.0207 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1964.9.2.0207 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Limnology and Oceanography volume 9, issue 2, page 207-217 ISSN 0024-3590 1939-5590 journal-article 1964 crwiley https://doi.org/10.4319/lo.1964.9.2.0207 2024-07-25T04:20:30Z Lake Bonney is a permanently ice‐covered lake of 3.2 km 2 in upper Taylor Valley, Victoria Land, Antarctica. The mean depth, without ice cover, is 18.7 m. The lake probably occupies a glacially overdeepened valley. The lake is meromictic. The maximal temperature of 7C coincides with the chemocline at about 15 m; the temperature decreases to a range of +2 to ‒4C in the bottom waters and to less than 1C beneath the ice. Calculations of superficial water inflow and of water loss by sublimation of ice indicate that the lake is slowly shrinking. Old shorelines above the present lake level attest to shrinkage. Part of the difference between water gain and water loss is made up by inflow of warm‐spring water at depth. Such springs are probably the major source of heat for the lake. Total solids in the monimolimnion range up to 407.3 g/liter. Sodium and magnesium chloride account for 96% of the dissolved salts. An analysis of ionic ratios suggests that the lake waters may consist of trapped seawater highly modified by subsequent concentration by evaporative processes, by addition of ions from surrounding soils, and by addition of warm‐spring water. The ionic concentrations are altered in part by the precipitation of CaSO 4 , CaCO 3 , and Na 2 SO 4 . Article in Journal/Newspaper Antarc* Antarctica Victoria Land Wiley Online Library Limnology and Oceanography 9 2 207 217 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Lake Bonney is a permanently ice‐covered lake of 3.2 km 2 in upper Taylor Valley, Victoria Land, Antarctica. The mean depth, without ice cover, is 18.7 m. The lake probably occupies a glacially overdeepened valley. The lake is meromictic. The maximal temperature of 7C coincides with the chemocline at about 15 m; the temperature decreases to a range of +2 to ‒4C in the bottom waters and to less than 1C beneath the ice. Calculations of superficial water inflow and of water loss by sublimation of ice indicate that the lake is slowly shrinking. Old shorelines above the present lake level attest to shrinkage. Part of the difference between water gain and water loss is made up by inflow of warm‐spring water at depth. Such springs are probably the major source of heat for the lake. Total solids in the monimolimnion range up to 407.3 g/liter. Sodium and magnesium chloride account for 96% of the dissolved salts. An analysis of ionic ratios suggests that the lake waters may consist of trapped seawater highly modified by subsequent concentration by evaporative processes, by addition of ions from surrounding soils, and by addition of warm‐spring water. The ionic concentrations are altered in part by the precipitation of CaSO 4 , CaCO 3 , and Na 2 SO 4 . |
format |
Article in Journal/Newspaper |
author |
Angino, Ernest E. Armitage, Kenneth B. Tash, Jerry C. |
spellingShingle |
Angino, Ernest E. Armitage, Kenneth B. Tash, Jerry C. PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
author_facet |
Angino, Ernest E. Armitage, Kenneth B. Tash, Jerry C. |
author_sort |
Angino, Ernest E. |
title |
PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
title_short |
PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
title_full |
PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
title_fullStr |
PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
title_full_unstemmed |
PHYSICOCHEMICAL LIMNOLOGY OF LAKE BONNEY, ANTARCTICA |
title_sort |
physicochemical limnology of lake bonney, antarctica |
publisher |
Wiley |
publishDate |
1964 |
url |
http://dx.doi.org/10.4319/lo.1964.9.2.0207 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.4319%2Flo.1964.9.2.0207 https://aslopubs.onlinelibrary.wiley.com/doi/pdf/10.4319/lo.1964.9.2.0207 |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_source |
Limnology and Oceanography volume 9, issue 2, page 207-217 ISSN 0024-3590 1939-5590 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.4319/lo.1964.9.2.0207 |
container_title |
Limnology and Oceanography |
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9 |
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2 |
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207 |
op_container_end_page |
217 |
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1810495561381445632 |