Dissolved Organic Radiocarbon in the Eastern Pacific and Southern Oceans

被引：22

作者：

Druffel, Ellen R. M. ^{[1
]}

Griffin, Sheila ^{[1
]}

Lewis, Christian B. ^{[1
]}

Rudresh, Megha ^{[1
,2
]}

Garcia, Noreen G. ^{[1
,3
]}

Key, Robert M. ^{[4
]}

McNichol, Ann P. ^{[5
]}

Hauksson, Niels E. ^{[1
]}

Walker, Brett D. ^{[1
,6
]}

机构：

[1] Univ Calif Irvine, Dept Eartn Syst Sci, Irvine, CA 92697 USA

[2] Univ Georgia, Dept Geog, Athens, GA 30602 USA

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

[4] Princeton Univ, Atmospher & Ocean Sci Program, Princeton, NJ 08544 USA

[5] Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA

[6] Univ Ottawa, Dept Earth & Environm Sci, Ottawa, ON, Canada

来源：

GEOPHYSICAL RESEARCH LETTERS | 2021年 / 48卷 / 10期

关键词：

C-13; carbon cycle; circumpolar deep water; dissolved inorganic carbon; dissolved organic carbon; radiocarbon; HIGH-MOLECULAR-WEIGHT; CARBON; EXTRACTION; PHASE; STORAGE; SAMPLES; MATTER;

D O I：

10.1029/2021GL092904

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We report marine dissolved organic carbon (DOC) concentrations, and DOC Delta C-14 and delta C-13 values in seawater collected from the Southern Ocean and eastern Pacific GOSHIP cruise P18 in 2016/2017. The aging of C-14 in DOC in circumpolar deep water northward from 69 degrees S to 20 degrees N was similar to that measured in dissolved inorganic carbon in the same samples, indicating that the transport of deep waters northward is the primary control of C-14 in DIC and DOC. Low DOC increment C-14 and delta C-13 measurements between 1,200 and 3,400 m depth may be evidence of a source of DOC produced in nearby hydrothermal ridge systems (East Pacific Rise).

引用

页数：9

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