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dc.contributor.authorSchlitzer, Reiner
dc.date.accessioned2021-02-11T19:51:38Z
dc.date.available2021-02-11T19:51:38Z
dc.date.issued1986-01-01
dc.identifier.citationSchlitzer, R. (1986). 14C in the deep water of the east Atlantic. Radiocarbon, 28(2A), 391-396.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200007505
dc.identifier.urihttp://hdl.handle.net/10150/652594
dc.descriptionFrom the 12th International Radiocarbon Conference held in Trondheim, June 24-28, 1985.
dc.description.abstractThe renewal of east Atlantic deep water and its large-scale circulation and mixing have been studied in observed distributions of temperature, silicate, Sigma-CO2, and 14C. 14C variations in northeast Atlantic deep water below 3500m depth are small. Delta-14C values range from -100 per mil to -125 per mil.14C bottom water concentrations decrease from &4C = -117 per mil in the Sierra Leone Basin to Delta-14C = -123 per mil in the Iberian Basin and are consistent with a mean northward bottom water flow. The characteristic of the water that flows from the west Atlantic through the Romanche Trench into the east Atlantic was determined by inspection of theta/Delta-14C and theta/Si02 diagrams. A mean potential temperature of theta = 1.50 +/- .05 degrees C was found for the inflowing water. A multi-box model including circulation, mixing, and chemical source terms in the deep water has been formulated. Linear programing and least-squares techniques have been used to obtain the transport and source parameters of the model from the observed tracer fields. Model calculations reveal an inflow through the Romanche Trench from the west Atlantic, which predominates over any other inflow, of (5 +/- 2) Sv (potential temperature 1.50 degrees C), a convective turnover of (150 +/- 50) years and a vertical apparent diffusivity of (4 +/- 1) cm2/s. Chemical source terms are in the expected ranges.
dc.language.isoen
dc.publisherAmerican Journal of Science
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © The American Journal of Science
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectEast Atlantic
dc.subjectAtlantic Ocean
dc.subjectsea water
dc.subjectHolocene
dc.subjectCenozoic
dc.subjectQuaternary
dc.subjectmethods
dc.subjectgeochronology
dc.subjectC 14
dc.subjectcarbon
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectcarbon dioxide
dc.subjectabsolute age
dc.title14C in the Deep Water of the East Atlantic
dc.typeProceedings
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.volume28
dc.source.issue2A
dc.source.beginpage391
dc.source.endpage396
refterms.dateFOA2021-02-11T19:51:38Z


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