Oxygen budget of a perennially ice-covered Antarctic lake

A bulk O2 budget for Lake Hoare, Antarctica, is presented. Five years of seasonal data show the lake to be persistently supersaturated with O2. 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...

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Bibliographic Details
Main Authors: Wharton, R. A., Jr., Mckay, C. P., Simmons, G. M., Jr., Parker, B. C.
Format: Other/Unknown Material
Language:unknown
Published: 1986
Subjects:
43
Antarctic
Hoare
Lake Hoare
Antarc*
Antarctica
Online Access:http://ntrs.nasa.gov/search.jsp?R=19860058714
Description
Summary:A bulk O2 budget for Lake Hoare, Antarctica, is presented. Five years of seasonal data show the lake to be persistently supersaturated with O2. 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 O2 from the lake through the summer moat is suggested. Measured values of the total O2 in the water column indicate that the time scale of O2 turnover is much longer than a year. Based on these results, it is suggested that the amount of O2 in the water does not change significantly throughout the year and that the lake is also supersaturated with N2.

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