Ice streams - fast, and faster?

被引：19

作者：

Alley, RB ^{[1
]}

Anandakrishnan, S ^{[1
]}

Dupont, TK ^{[1
]}

Parizek, BR ^{[1
]}

机构：

[1] Penn State Univ, Dept Geosci & Earth & Environm Syst Inst, University Pk, PA 16802 USA

来源：

COMPTES RENDUS PHYSIQUE | 2004年 / 5卷 / 07期

关键词：

ice-stream; ice-sheet; Antarctica; Greenland; till; sea-level; ice-shelf;

D O I：

10.1016/j.crhy.2004.08.002

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Rapid flow of ice streams is caused either by great thickness, or by effective basal lubrication especially from deforming tills. Competing thermal processes act to stabilize and to destabilize the well-lubricated ice streams, and may contribute to their observed short-term variability yet long-term persistence. Increasing evidence indicates that ice streams are subject to speed-up in response to warming, through thinning or loss of ice shelves, and possibly in response to meltwater penetration to ice-stream beds. (C) 2004 Academie des sciences. Published by Elsevier SAS. All rights reserved.

引用

页码：723 / 734

页数：12

共 101 条

[21] SEISMIC MEASUREMENTS REVEAL A SATURATED POROUS LAYER BENEATH AN ACTIVE ANTARCTIC ICE STREAM [J].

BLANKENSHIP, DD ;

BENTLEY, CR ;

ROONEY, ST ;

ALLEY, RB .

NATURE, 1986, 322 (6074) :54-57

[22] MASSIVE ICEBERG DISCHARGES AS TRIGGERS FOR GLOBAL CLIMATE-CHANGE [J].

BROECKER, WS .

NATURE, 1994, 372 (6505) :421-424

[23] RAPID SOFT BED SLIDING OF THE PUGET GLACIAL LOBE [J].

BROWN, NE ;

HALLET, B ;

BOOTH, DB .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1987, 92 (B9) :8985-8997

[24] A borehole camera system for imaging the deep interior of ice sheets [J].

Carsey, F ;

Behar, A ;

Lane, AL ;

Realmuto, V ;

Engelhardt, H .

JOURNAL OF GLACIOLOGY, 2002, 48 (163) :622-628

[25] Thermodynamics of basal freeze-on: predicting basal and subglacial signatures of stopped ice streams and interstream ridges [J].

Christoffersen, P ;

Tulaczyk, S .

ANNALS OF GLACIOLOGY, VOL 36, 2003, 36 :233-243

[26] Palaeo-ice streams: an introduction [J].

Clark, CD ;

Evans, DJA ;

Piotrowski, JA .

BOREAS, 2003, 32 (01) :1-3

[27] Extent and basal characteristics of the M'Clintock Channel Ice Stream [J].

Clark, CD ;

Stokes, CR .

QUATERNARY INTERNATIONAL, 2001, 86 :81-101

[28] Seismic-reflection evidence for a deep subglacial trough beneath Jakobshavns Isbrae, West Greenland [J].

Clarke, TS ;

Echelmeyer, K .

JOURNAL OF GLACIOLOGY, 1996, 42 (141) :219-232

[29] Past and future grounding-line retreat of the West Antarctic Ice Sheet [J].

Conway, H ;

Hall, BL ;

Denton, GH ;

Gades, AM ;

Waddington, ED .

SCIENCE, 1999, 286 (5438) :280-283

[30] Interfacial water in polar glaciers and glacier sliding at -17 °C [J].

Cuffey, KM ;

Conway, H ;

Hallet, B ;

Gades, AM ;

Raymond, CF .

GEOPHYSICAL RESEARCH LETTERS, 1999, 26 (06) :751-754

← 1 2 3 4 5 6 7 8 9 10 →