Dissolved inorganic radiocarbon in the North Pacific Ocean and Sargasso Sea

We present radiocarbon measurements of dissolved inorganic carbon (DIC) in depth profiles from reoccupations of our central North Pacific Ocean and Sargasso Sea (SS) sites. From 1985 to 1999, an increase in Delta C-14 values of 6-17 parts per thousand was measured between 1150 and 2400m depth in the...

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Bibliographic Details
Main Authors: Druffel, ERM, Bauer, JE, Griffin, S, Beaupre, SR, Hwang, J
Other Authors: 해양대학원, 10160028
Format: Article in Journal/Newspaper
Language:English
Published: PERGAMON-ELSEVIER SCIENCE LTD 2008
Subjects:
dissolved inorganic carbon
radiocarbon
bomb radiocarbon
deep circulation
ATLANTIC OCEAN
WORLD OCEANS
CARBON
C-14
VARIABILITY
ALKALINITY
COMPONENTS
SIGMA-CO2
PROGRAM
TRITIUM
CO2
Pacific
NADW
North Atlantic Deep Water
North Atlantic
Online Access:https://oasis.postech.ac.kr/handle/2014.oak/25932
https://doi.org/10.1016/J.DSI-.2007.12.007
Description
Summary:We present radiocarbon measurements of dissolved inorganic carbon (DIC) in depth profiles from reoccupations of our central North Pacific Ocean and Sargasso Sea (SS) sites. From 1985 to 1999, an increase in Delta C-14 values of 6-17 parts per thousand was measured between 1150 and 2400m depth in the North Central Pacific. Natural changes in deep circulation are likely responsible for variability of Delta C-14 signatures in the deep ocean, though we cannot rule out the presence of bomb C-14 at this depth range. Bomb C-14 had increased in the deep SS from 1989 to 2000; this is the result of southward transport of North Atlantic Deep Water (NADW) to this site. (c) 2007 Elsevier Ltd. All rights reserved. X 1 1 14 scie scopus

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