Ice Volume and Sea Level During the Last Interglacial

被引：331
|
作者：
Dutton, A. [1 ,2 ]
Lambeck, K. [1 ,3 ]
机构：
[1] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia
[2] Univ Florida, Dept Geol Sci, Gainesville, FL 32611 USA
[3] Ecole Normale Super, Dept Geosci, F-75231 Paris, France
来源：
SCIENCE | 2012年 / 337卷 / 6091期
基金：
澳大利亚研究理事会; 美国国家科学基金会;
关键词：
CORAL-REEFS; GREENLAND; RISE; CONSTRAINTS; DURATION; COLLAPSE; PERIOD; COAST; SHEET;
D O I：
10.1126/science.1205749
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
During the last interglacial period, similar to 125,000 years ago, sea level was at least several meters higher than at present, with substantial variability observed for peak sea level at geographically diverse sites. Speculation that the West Antarctic ice sheet collapsed during the last interglacial period has drawn particular interest to understanding climate and ice-sheet dynamics during this time interval. We provide an internally consistent database of coral U-Th ages to assess last interglacial sea-level observations in the context of isostatic modeling and stratigraphic evidence. These data indicate that global (eustatic) sea level peaked 5.5 to 9 meters above present sea level, requiring smaller ice sheets in both Greenland and Antarctica relative to today and indicating strong sea-level sensitivity to small changes in radiative forcing.
引用
收藏
页码：216 / 219
页数：4
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