The role of lateral drag in the dynamics of ice stream B, Antarctica

被引：83

作者：

Whillans, IM ^{[1
]}

vanderVeen, CJ ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT GEOL SCI,COLUMBUS,OH 43210

来源：

JOURNAL OF GLACIOLOGY | 1997年 / 43卷 / 144期

关键词：

D O I：

10.3189/S0022143000003178

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

The Partitioning of resistive force between the bed and sides of Ice Stream B, Antarctica, is obtained for three large areas that have been measured using repeat aerial photogrammetry. Problems associated with data errors and local variations in ice strength and velocity are reduced by considering the areally averaged budget of forces for each photo block. Results indicate that the bed under Ice Stream B must be very weak and unable to provide much resistance. Mechanical control on this ice stream emanates almost entirely from the lateral margins.

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页码：231 / 237

页数：7

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