Width and length scaling of glaciers

被引:47
作者
Bahr, DB [1 ]
机构
[1] Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA
关键词
D O I
10.3189/S0022143000035164
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
An analysis of hundreds of mountain and valley glaciers in the former Soviet Union and the Alps shows that characteristic glacier widths scale as characteristic glacier lengths raised to an exponent of 0.6. This is in contrast to most previous analyses which implicitly or explicitly assumed scaling exponents of either 0 or 1. The exponent 0.6 implies that average glacier widths are proportional to average glacier thicknesses. Although this seems to suggest V-shaped glacier valleys, the linear width-thickness relationship is not inconsistent with parabolic valley cross-sections, because the characteristic (Or average) width of a glacier depends on many other aspects of channel and glacier morphology, including variations in the channel width with distance up- and down-stream.
引用
收藏
页码:557 / 562
页数:6
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