WOCE AMS Radiocarbon I: Pacific Ocean Results (P6, P16 and P17)

Authors:

1 January 1996

journal article
Published by Cambridge University Press (CUP) in Radiocarbon

Vol. 38 (3) , 425-518
DOI:10.1017/s0033822200030071

Abstract

AMS radiocarbon results from the World Ocean Circulation Experiment in the Pacific Ocean show dramatic changes in the inventory and distribution of bomb-produced ¹⁴C since the time of the GEOSECS survey (8/73–6/74). Near-surface Δ¹⁴C values for the eastern portion of both the northern and southern subtropical gyres decreased by 25–50‰, with the change being greater in the north. Equatorial near-surface values have increased by ca. 25‰. Changes in the 250–750-m depth range are dramatically different between the northern and southern basins. The intermediate and mode waters of the southern basin have increased by as much as 75‰ since GEOSECS. Waters of similar density in the northern hemisphere are not exposed to the Southern Ocean circulation regime and are significantly less ventilated, showing maximum changes of ca. 50‰.

Keywords

This publication has 20 references indexed in Scilit:

WOCE Pacific Ocean Radiocarbon Program
Radiocarbon, 1996
Measurements of the Oxalic Acid II/Oxalic Acid I Ratio as a Quality Control Parameter at NOSAMS
Radiocarbon, 1995
Internal and external checks in the NOSAMS sample preparation laboratory for target quality and homogeneity
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1994
The Rapid Preparation of Seawater ΣCO₂ for Radiocarbon Analysis at the National Ocean Sciences Ams Facility
Radiocarbon, 1994
Illumination of a Black Box: Analysis of Gas Composition During Graphite Target Preparation
Radiocarbon, 1992
¹⁴C Background Levels in An Accelerator Mass Spectrometry System
Radiocarbon, 1987
Workshop On ¹⁴C Data Reporting
Radiocarbon, 1980
GEOSECS Pacific Radiocarbon
Radiocarbon, 1980
University of Washington Geosecs North Atlantic carbon-14 results
Earth and Planetary Science Letters, 1974
Gas exchange rates between air and sea
Tellus, 1974