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dc.contributor.authorPovinec, Pavel P.
dc.contributor.authorAramaki, Takafumi
dc.contributor.authorBurr, George S.
dc.contributor.authorJull, A. J. Timothy
dc.contributor.authorKwong, Laval Liong Wee
dc.contributor.authorTogawa, Orihiko
dc.date.accessioned2021-02-11T21:46:07Z
dc.date.available2021-02-11T21:46:07Z
dc.date.issued2004-01-01
dc.identifier.citationPovinec, P. P., Aramaki, T., Burr, G. S., Jull, A. T., Kwong, L. L. W., & Togawa, O. (2004). Radiocarbon in the water column of the southwestern North Pacific Ocean—24 years after GEOSECS. Radiocarbon, 46(2), 583-594.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200035621
dc.identifier.urihttp://hdl.handle.net/10150/654916
dc.descriptionFrom the 18th International Radiocarbon Conference held in Wellington, New Zealand, September 1-5, 2003.
dc.description.abstractIn the framework of the Worldwide Marine Radioactivity Studies (WOMARS) project, water profile samples for radiocarbon measurements were taken during the IAEA97 cruise at 10 stations in the southwestern North Pacific Ocean. While 14C concentrations were rapidly decreasing from the surface (∆14C about 100 ppm) down to about 800 m at all visited stations (∆14C about -200 ppm), the concentrations below 1000 m were almost constant. Some stations were in proximity to the GEOSECS stations sampled in 1973; thus, 14C profiles could be compared after a 24-yr interval. Generally, 14C concentrations had decreased in surface waters (by 50-80 ppm) and increased (by about the same amount) in intermediate waters when compared with GEOSECS data. In deep waters (below 1000 m), the observed 14C concentrations were similar to GEOSECS values. The bomb-produced 14C inventory had increased by more than 20% over the 24 yr from 1973 to 1997 and was estimated to be about (32 +/5) 10^12 atom m-2, with an annual 14C flux of (1.3 +/0.3) 10^12 atom m^-2 yr-1. The results suggest that bomb-produced 14C has been advected northwards by the Kuroshio Current and the Kuroshio Extension and stored in the intermediate layer as North Pacific Intermediate Water.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.titleRadiocarbon in the Water Column of the Southwestern North Pacific Ocean—24 Years After Geosecs
dc.typeProceedings
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume46
dc.source.issue2
dc.source.beginpage583
dc.source.endpage594
refterms.dateFOA2021-02-11T21:46:07Z


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