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dc.contributor.authorSchlosser, Peter
dc.contributor.authorKromer, Bernd
dc.contributor.authorÖstlund, Gote
dc.contributor.authorEkwurzel, Brenda
dc.contributor.authorBönisch, Gerhard
dc.contributor.authorLoosli, H. H.
dc.contributor.authorPurtschert, Roland
dc.date.accessioned2021-02-11T20:33:20Z
dc.date.available2021-02-11T20:33:20Z
dc.date.issued1994-01-01
dc.identifier.citationSchlosser, P., Kromer, B., Östlund, G., Ekwurzel, B., Bönisch, G., Loosli, H. H., & Purtschert, R. (1994). On the 14C and 39Ar distribution in the central Arctic Ocean: Implications for deep water formation. Radiocarbon, 36(3), 327-343.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S003382220001451X
dc.identifier.urihttp://hdl.handle.net/10150/653354
dc.description.abstractWe present Delta-14C and 39Ar data collected in the Nansen, Amundsen and Makarov basins during two expeditions to the central Arctic Ocean (RV Polarstern cruises ARK IV/3, 1987 and ARK VIII/3,1991). The data are used, together with published Delta-14C values, to describe the distribution of Delta-14C in all major basins of the Arctic Ocean (Nansen, Amundsen, Makarov and Canada Basins), as well as the 39Ar distribution in the Nansen Basin and the deep waters of the Amundsen and Makarov Basins. From the combined Delta-14C and 39Ar distributions, we derive information on the mean "isolation ages" of the deep and bottom waters of the Arctic Ocean. The data point toward mean ages of the bottom waters in the Eurasian Basin (Nansen and Amundsen Basins) of ca. 250-300 yr. The deep waters of the Amundsen Basin show slightly higher 3H concentrations than those in the Nansen Basin, indicating the addition of a higher fraction of water that has been at the sea surface during the past few decades. Correction for the bomb 14C added to the deep waters along with bomb 3H yields isolation ages for the bulk of the deep and bottom waters of the Amundsen Basin similar to those estimated for the Nansen Basin. This finding agrees well with the 39Ar data. Deep and bottom waters in the Canadian Basin (Makarov and Canada Basins) are very homogeneous, with an isolation age of ca. 450 yr. Delta-14C and 39Ar data and a simple inverse model treating the Canadian Basin Deep Water (CBDW) as one well-mixed reservoir renewed by a mixture of Atlantic Water (29%), Eurasian Basin Deep Water (69%) and brine-enriched shelf water (2%) yield a mean residence time of CBDW of ca. 300 yr.
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.subjectisolation age
dc.subjectAr 39
dc.subjectargon
dc.subjectAmundsen Basin
dc.subjectMakarov Basin
dc.subjectNansen Basin
dc.subjectArctic Ocean
dc.subjectdepth
dc.subjectnoble gases
dc.subjectocean circulation
dc.subjectresidence time
dc.subjectsea water
dc.subjectC 14
dc.subjectcarbon
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectgeochemistry
dc.titleOn the 14C and 39Ar Distribution in the Central Arctic Ocean: Implications for Deep Water Formation
dc.typeArticle
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.noteThis material was digitized as part of a cooperative project between Radiocarbon and the University of Arizona Libraries.
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.volume36
dc.source.issue3
dc.source.beginpage327
dc.source.endpage343
refterms.dateFOA2021-02-11T20:33:20Z


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