Pleistocene ice and paleo-strain rates at Taylor Glacier, Antarctica

被引：27

作者：

Aciego, S. M.

Cuffey, K. M.

Kavanaugh, J. L.

Morse, D. L.

Severinghaus, J. P.

机构：

[1] Univ Calif Berkeley, Dept Geol, Berkeley, CA 94720 USA

[2] ETH Zentrum, Inst Isotope Geol & Mineral Resources, CH-8092 Zurich, Switzerland

[3] Univ Alberta, Dept Earth & Atmospher Sci, Edmonton, AB TG6 2E3, Canada

[4] Univ Texas, Inst Geophys, Austin, TX 78759 USA

[5] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA

来源：

QUATERNARY RESEARCH | 2007年 / 68卷 / 03期

基金：

美国国家科学基金会;

关键词：

Taylor Glacier; Taylor Dome; horizontal ice core; delta(18); delta O-18; delta O-18 of O-2; glacier strain rates;

D O I：

10.1016/j.yqres.2007.07.013

中图分类号：

P9 [自然地理学];

学科分类号：

0705 ; 070501 ;

摘要：

Ice exposed in ablation zones of ice sheets can be a valuable source of samples for paleoclimate studies and information about long-term ice dynamics. We report a 28-km long stable isotope sampling transect along a flowline on lower Taylor Glacier, Antarctica, and show that ice from the last glacial period is exposed here over tens of kilometers. Gas isotope analyses on a small number of samples confirm our age hypothesis. These chronostratigraphic data contain information about past ice dynamics and in particular should be sensitive to the longitudinal strain rate on the north flank of Taylor Dome, averaged over millennia. The imprint of climatic changes on ice dynamics may be discernible in these data. (c) 2007 University of Washington. All rights reserved.

引用

页码：303 / 313

页数：11

共 33 条

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