A theory of ice-sheet surges

被引:32
作者
Fowler, AC
Schiavi, E
机构
[1] Math Inst, Oxford OX1 3LB, England
[2] Univ Autonoma Madrid, Fac Econ, Madrid, Spain
关键词
D O I
10.3189/S0022143000002409
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
A simplified model of a two-dimensional ice sheet is described. It includes basal ice sliding dependent on the basal water pressure, which itself is described by a simple theory of basal drainage. We show that this simple but sophisticated model predicts surges of the ice mass in realistic circumstances, and we describe these surges by solving the problem numerically. We also are able to describe some parts of the surge analytically. The numerical solution of the model is a delicate matter, and highlights pitfalls to be avoided if more complicated models are to be solved successfully.
引用
收藏
页码:104 / 118
页数:15
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