The effect of anisotropic flow properties on ice-sheet surface elevation change

被引：2
|
作者：
Wang, WL
Li, J
Zwally, J
Morgan, V
Van Ommen, TD
机构：
[1] NASA, Goddard Space Flight Ctr, Raytheon ITSS, Greenbelt, MD 20771 USA
[2] NASA, Goddard Space Flight Ctr, Oceans & Ice Branch, Greenbelt, MD 20771 USA
[3] Australian Antarctic Div, Hobart, Tas 7001, Australia
[4] CRC, Antarctic Climate & Ecosyst, Hobart, Tas 7001, Australia
来源：
ANNALS OF GLACIOLOGY, VOL 39, 2004 | 2004年 / 39卷
关键词：
D O I：
10.3189/172756404781813989
中图分类号：
P [天文学、地球科学];
学科分类号：
07 ;
摘要：
An ice-flow model has been developed and applied to Law Dome, East Antarctica, at the location of the Dome Summit South deep borehole. The results are used to reconstruct an ice-sheet history of accumulation rate, ice thickness and the rate of change in ice thickness. The focus of this study is on the effect of the variation in anisotropic flow properties on the ice-sheet surface elevation change. The enhancement factor, defined as the ratio of the strain rate for anisotropic ice to the strain rate for isotropic ice, is used in the ice-flow relations to account for the anisotropic properties of the ice with fabric development. The model is run with the various ice rheologies which represent anisotropic or isotropic ice-flow properties. The results show that the model incorporating anisotropic flow properties of the ice is more sensitive to the climate-change history.
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页码：439 / 444
页数：6
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