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RESEARCH PAPERS

Measurements of Sea-Ice Stresses Near Grounded Obstacles

[+] Author and Article Information
W. M. Sackinger

Electrical Engineering, Geophysical Institute, University of Alaska, Fairbanks, Alaska 99701

R. D. Nelson

Mechanical Engineering, Geophysical Institute, University of Alaska, Fairbanks, Alaska 99701

J. Energy Resour. Technol 102(3), 144-147 (Sep 01, 1980) (4 pages) doi:10.1115/1.3227864 History: Received May 28, 1980; Online October 22, 2009

Abstract

Stresses were measured in multiyear sea ice near a grounded floe island. Compressive stresses as high as 250 psi (1.72 MPa) were observed, in the form of impulses. A second installation in annual sea ice near a grounded pressure ridge showed tensile stress of 100 psi (0.69 MPa), followed by crack formation. These stresses were localized to a range of the order of 100 m. Localized compressive stresses in multiyear ice near grounded offshore structures may exceed 250 psi (1.72 MPa), and impulsive loading should be expected.

Copyright © 1980 by ASME
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