Temperature and surface-ocean water balance of the mid-Holocene tropical Western Pacific

被引：400

作者：

Gagan, MK

Ayliffe, LK

Hopley, D

Cali, JA

Mortimer, GE

Chappell, J

McCulloch, MT

Head, MJ

机构：

[1] Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia

[2] James Cook Univ N Queensland, Sir George FIsher Ctr, Townsville, Qld 4811, Australia

[3] Australian Natl Univ, Res Sch Pacific & Asian Studies, Canberra, ACT 0200, Australia

来源：

SCIENCE | 1998年 / 279卷 / 5353期

关键词：

D O I：

10.1126/science.279.5353.1014

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：

Skeletal Sr/Ca and O-18/O-16 ratios in corals from the Great Barrier Reef, Australia, indicate that the tropical ocean surface similar to 5350 years ago was 1 degrees C warmer and enriched in O-18 by 0.5 per mil relative to modern seawater. The results suggest that the temperature increase enhanced the evaporative enrichment of O-18 in seawater. Transport of part of the additional atmospheric water vapor to extratropical latitudes may have sustained the O-18/O-16 anomaly. The reduced glacial-Holocene shift in seawater O-18/O-16 ratio produced by the mid-Holocene O-18 enrichment may help to reconcile the different temperature histories for the last deglaciation given by coral Sr/Ca thermometry and foraminiferal oxygen-isotope-records.

引用

页码：1014 / 1018

页数：5

共 48 条

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