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Oxygen budget of a perennially ice‐covered Antarctic lake 1
Author(s) -
Wharton Robert A.,
McKay Christopher P.,
Simmons George M.,
Parker Bruce C.
Publication year - 1986
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1986.31.2.0437
Subject(s) - sublimation (psychology) , supersaturation , glacial period , water column , oxygen , atmospheric sciences , liquid water , geology , environmental science , deglaciation , hydrology (agriculture) , oceanography , physical geography , geomorphology , chemistry , geography , earth science , psychology , geotechnical engineering , organic chemistry , psychotherapist
A bulk O 2 budget for Lake Hoare, Antarctica, is presented. Five years of seasonal data show the lake to be persistently supersaturated with O 2 . Oxygen is carried into the lake in glacial meltstreams and is left behind when this water is removed as ice by ablation and sublimation. A diffusive loss of O 2 from the lake through the summer moat is suggested. Measured values of the total O 2 in the water column indicate that the time scale of O 2 turnover is much longer than a year. Based on these results we suggest that the amount of O 2 in the water does not change significantly throughout the year and that the lake is also supersaturated with N 2 .
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