LAKE-ICE BLISTERS, TERRA NOVA BAY AREA, NORTHERN VICTORIA LAND, ANTARCTICA

Ice blisters, typically 0.2-0.8 m high and 5-20 m long, develop annually on perennially frozen lakes in Northern Victoria Land. They are believed to be caused by hydrostatic pressures generated through progressive freezing of solute-rich water beneath the lake-ice cover during winter. Lake-ice blist...

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Bibliographic Details
Published in:Geografiska Annaler: Series A, Physical Geography
Main Authors: GUGLIELMIN, MAURO, Lewkowicz AG, French HM, Strini A.
Other Authors: Guglielmin, Mauro, Lewkowicz, Ag, French, Hm, Strini, A.
Format: Article in Journal/Newspaper
Language:unknown
Published: 2009
Subjects:
lake-ice blister
icing blister
seasonal frost mound
permafrost
ice-covered lakes
Antarctic
The Antarctic
Victoria Land
Terra Nova Bay
Winter Lake
Antarc*
Antarctica
Ice
Online Access:http://hdl.handle.net/11383/1715006
https://doi.org/10.1111/j.1468-0459.2009.00357.x
Description
Summary:Ice blisters, typically 0.2-0.8 m high and 5-20 m long, develop annually on perennially frozen lakes in Northern Victoria Land. They are believed to be caused by hydrostatic pressures generated through progressive freezing of solute-rich water beneath the lake-ice cover during winter. Lake-ice blisters in the study area differfrom icing blisters described from the northern hemisphere. The latter are caused by hydraulic pressures and are found at locations such as river beds or spring sites on sloping terrain. The Antarctic lake-ice blisters reflect the occurrence of dry-based perennially frozen lakes with high salt contents in an extremely cold and arid environment.

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