Oxygen rise in the tropical upper ocean during the Paleocene-Eocene Thermal Maximum

被引：9

作者：

Moretti, Simone ^{[1
,2
]}

Auderset, Alexandra ^{[1
,3
]}

Deutsch, Curtis ^{[4
]}

Schmitz, Ronja ^{[1
]}

Gerber, Lukas ^{[1
]}

Thomas, Ellen ^{[5
,6
]}

Luciani, Valeria ^{[7
]}

Petrizzo, Maria Rose ^{[8
]}

Schiebel, Ralf ^{[1
]}

Tripati, Aradhna ^{[9
,10
,11
]}

Sexton, Philip ^{[12
]}

Norris, Richard ^{[13
]}

D'Onofrio, Roberta ^{[7
]}

Zachos, James ^{[14
]}

Sigman, Daniel M. ^{[4
]}

Haug, Gerald H. ^{[1
]}

Martinez-Garcia, Alfredo ^{[1
]}

机构：

[1] Max Planck Inst Chem, Climate Geochem Dept, Mainz, Germany

[2] Ist Sci Polari, Consiglio Nazl Ric, Bologna, Italy

[3] Univ Southampton, Sch Ocean & Earth Sci, Southampton, England

[4] Princeton Univ, Dept Geosci, Princeton, NJ USA

[5] Yale Univ, Dept Earth & Planetary Sci, New Haven, CT USA

[6] Wesleyan Univ, Dept Earth & Environm Sci, Middletown, CT USA

[7] Univ Ferrara, Dipartimento Fis & Sci Terra, Ferrara, Italy

[8] Univ Milan, Dipartimento Sci Terra Ardito Desio, Milan, Italy

[9] Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA

[10] Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA

[11] Univ Calif Los Angeles, Dept Inst Environm & Sustainabil, Los Angeles, CA USA

[12] Open Univ, Sch Environm Earth & Ecosyst Sci, Milton Keynes, England

[13] Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA USA

[14] Univ Calif Santa Cruz, Dept Earth & Planetary Sci, Santa Cruz, CA USA

来源：

SCIENCE | 2024年 / 383卷 / 6684期

基金：

美国国家科学基金会;

关键词：

ODP SITE 865; PLANKTONIC-FORAMINIFERA; DEEP-SEA; BENTHIC FORAMINIFERA; ISOTOPIC ANALYSIS; METHANE HYDRATE; PACIFIC-OCEAN; GLOBAL OCEAN; CLIMATE; NITROGEN;

D O I：

10.1126/science.adh4893

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 global ocean's oxygen inventory is declining in response to global warming, but the future of the low-oxygen tropics is uncertain. We report new evidence for tropical oxygenation during the Paleocene-Eocene Thermal Maximum (PETM), a warming event that serves as a geologic analog to anthropogenic warming. Foraminifera-bound nitrogen isotopes indicate that the tropical North Pacific oxygen-deficient zone contracted during the PETM. A concomitant increase in foraminifera size implies that oxygen availability rose in the shallow subsurface throughout the tropical North Pacific. These changes are consistent with ocean model simulations of warming, in which a decline in biological productivity allows tropical subsurface oxygen to rise even as global ocean oxygen declines. The tropical oxygen increase may have helped avoid a mass extinction during the PETM.

引用

页码：727 / 731

页数：5

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