Accession Number : AD0284937

Title :   STABILITY OF ICE-AGE CAPS

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : WEERTMAN,JOHANNES

Report Date : JUN 1962

Pagination or Media Count : 1

Abstract : The stability of large ice caps is investigated using the present-day theory of the flow of ice in glaciers and ice sheets. The type of instability is that mentioned by Bodvarsson. It is concluded that a small arctic ice cap can become unstable and expand into a large ice-age ice sheet as a result of moderate changes in the regime of the ice cap. A large continental ice cap also can become unstable and shrink to nothing if the snow accumulation is reduced or the ablation rate increased. The results fit well into the Ewing-Donn theory of ice ages. There is the possibility that the inherent instability of ice-age ice caps is in itself sufficient to explain both the formation and disappearance of these ice caps. (Author)

Descriptors :   *GLACIERS, ABLATION, MATHEMATICAL ANALYSIS, MECHANICAL PROPERTIES, POLAR REGIONS, STABILITY

Distribution Statement : APPROVED FOR PUBLIC RELEASE