Deformation of grain boundaries in polar ice

被引：16

作者：

Durand, G

Graner, F

Weiss, J

机构：

[1] Univ Grenoble 1, CNRS, FRE 2192, Lab Glaciol & Geophys Environm, F-38402 St Martin Dheres, France

[2] Univ Grenoble 1, Spectrometrie Phys Lab, CNRS, UMR 5588, F-38402 St Martin Dheres, France

来源：

EUROPHYSICS LETTERS | 2004年 / 67卷 / 06期

关键词：

D O I：

10.1209/epl/i2004-10139-0

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ice microstructure (grain boundaries) is a key feature used to study ice evolution and to investigate past climatic changes. We studied a deep ice core, in Dome Concordia, Antarctica, which records past mechanical deformations. We measured a "texture tensor" which characterizes the pattern geometry and reveals local heterogeneities of deformation along the core. These results question key assumptions of the current models used for dating.

引用

页码：1038 / 1044

页数：7

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