Ventilation of the glacial deep Pacific Ocean

被引：76

作者：

Broecker, W

Barker, S

Clark, E

Hajdas, I

Bonani, G

Stott, L

机构：

[1] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA

[2] ETH Honggerberg, CH-8093 Zurich, Switzerland

[3] Univ So Calif, Los Angeles, CA 90089 USA

来源：

SCIENCE | 2004年 / 306卷 / 5699期

关键词：

D O I：

10.1126/science.1102293

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：

Measurements of the age difference between coexisting benthic and planktic foraminifera from western equatorial Pacific deep-sea cores suggest that during peak glacial time the radiocarbon age of water at 2-kilometers depth was no greater than that of today. These results make unlikely suggestions that a slowdown in deep-ocean ventilation was responsible for a sizable fraction of the increase of the ratio of carbon-14 (C-14) to carbon in the atmosphere and surface ocean during glacial time. Comparison of C-14 ages for coexisting wood and planktic foraminifera from the same site suggests that the atmosphere to surface ocean C-14 to C ratio difference was not substantially different from today's.

引用

页码：1169 / 1172

页数：4

共 18 条

[1] Changing atmospheric Delta C-14 and the record of deep water paleoventilation ages [J].