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Title: Effect of porosity on the hydrostatic compression of ice
Authors: Gow, A. J. (Anthony Jack)
Sheehy, William.
Keywords: Antarctica
Antarctic ice sheet
Byrd Station, Antarctica
Ice sheets
Ice compressibility
Ice cores
Hydrostatic compression test
Publisher: Cold Regions Research and Engineering Laboratory (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Special report (Cold Regions Research and Engineering Laboratory (U.S.)) ; 234.
Description: Special Report
Abstract: A cathetometer was used in conjunction with a window-equipped pressure chamber to measure linear deformation in porous polycrystalline ice samples compressed hydrostatically at pressures of up to 0.31 kb. Tests show that a porosity as little as 1% can increase the compressibility of ice four- or five-fold. However, the compression is of a substantially nonelastic nature, since very little recovery (expansion) occurs during and following pressure release. Pore closure, which is virtually complete at the higher pressures, can be attributed to a combination of plastic and cataclastic deformation of ice in the walls of the pores.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Special Report

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