Early Holocene retreat of the George VI Ice Shelf, Antarctic Peninsula

被引：79

作者：

Bentley, MJ ^{[1
]}

Hodgson, DA

Sugden, DE

Roberts, SJ

Smith, JA

Leng, MJ

Bryant, C

机构：

[1] Univ Durham, Dept Geog, Durham DH1 3LE, England

[2] British Antarctic Survey, NERC, Cambridge CB3 0ET, England

[3] Univ Edinburgh, Sch Geosci, Inst Geog, Edinburgh EH8 9XP, Midlothian, Scotland

[4] British Antarctic Survey, NERC, Cambridge CB3 0ET, England

[5] British Geol Survey, Nat Environm Res Council, Isotope Geosci Lab, Keyworth NG12 5GG, Notts, England

[6] Univ Nottingham, Sch Geog, Nottingham NG7 2RD, England

[7] NERC, Radiocarbon Lab, Glasgow G75 0QF, Lanark, Scotland

来源：

GEOLOGY | 2005年 / 33卷 / 03期

基金：

英国自然环境研究理事会;

关键词：

ice shelves; Antarctic Peninsula; Holocene; paleoclimate; Circumpolar Deep Water;

D O I：

10.1130/G21203.1

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The recent collapse of several Antarctic Peninsula ice shelves has been linked to rapid regional atmospheric warming during the twentieth century. New high-resolution lake sediment records of Holocene ice-shelf behavior show that the George VI Ice Shelf was absent beginning ca. 9595 calibrated (cal.) yr B.P., but reformed by ca. 7945 cal. yr B.P. This retreat immediately followed a period of maximum Holocene warmth that is recorded in some ice cores and occurred at the same time as an influx of warmer ocean water onto the Antarctic Peninsula shelf. The absence of the ice shelf suggests that early Holocene ocean-atmosphere variability in the Antarctic Peninsula was greater than that measured in recent decades.

引用

页码：173 / 176

页数：4

共 25 条

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Anderson J.B., 1999, ANTARCTIC MARINE GEO

[2]

Berkman PA, 1996, GEOPHYS RES LETT, V23, P363, DOI 10.1029/96GL00151

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