Revisiting the mid-Pleistocene transition ocean circulation crisis

被引：0

作者：

Hines, Sophia K. V. ^{[1
]}

Charles, Christopher D. ^{[2
]}

Starr, Aidan ^{[3
,4
]}

Goldstein, Steven L. ^{[5
,6
]}

Hemming, Sidney R. ^{[5
,6
]}

Hall, Ian R. ^{[7
]}

Lathika, Nambiyathodi ^{[8
]}

Passacantando, Mollie ^{[9
]}

Bolge, Louise ^{[5
]}

机构：

[1] Woods Hole Oceanog Inst, Dept Marine Chem & Geochem, Woods Hole, MA 02543 USA

[2] Scripps Inst Oceanog, La Jolla, CA USA

[3] Rutgers State Univ, Dept Marine & Coastal Sci, New Brunswick, NJ USA

[4] Univ Cambridge, Dept Geog, Cambridge, England

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

[6] Columbia Univ, Dept Earth & Environm Sci, New York, NY USA

[7] Cardiff Univ, Sch Earth & Environm Sci, Cardiff, Wales

[8] Minist Earth Sci, Natl Ctr Polar & Ocean Res, Goa, India

[9] Univ Rhode Isl, Grad Sch Oceanog, Narragansett, RI USA

来源：

SCIENCE | 2024年 / 386卷 / 6722期

基金：

美国国家科学基金会;

关键词：

CARBON-DIOXIDE CONCENTRATION; ANTARCTIC SEA-ICE; ATMOSPHERIC CO2; OVERTURNING CIRCULATION; SOUTHERN-OCEAN; ATLANTIC; CLIMATE; ND; CYCLES; VOLUME;

D O I：

10.1126/science.adn4154

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：

The mid-Pleistocene transition (MPT) [similar to 1.25 to 0.85 million years ago (Ma)] marks a shift in the character of glacial-interglacial climate (1, 2). One prevailing hypothesis for the origin of the MPT is that glacial deep ocean circulation fundamentally changed, marked by a circulation "crisis" at similar to 0.90 Ma (marine isotope stages 24 to 22) (3). Using high-resolution paired neodymium, carbon, and oxygen isotope data from the South Atlantic Ocean (Cape Basin) across the MPT, we find no evidence of a substantial change in deep ocean circulation. Before and during the early MPT (similar to 1.30 to 1.12 Ma), the glacial deep ocean variability closely resembled that of the most recent glacial cycle. The carbon storage facilitated by developing deep ocean stratification across the MPT required only modest circulation adjustments.

引用

页码：681 / 686

页数：6

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