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dc.contributor.authorSivan, O.
dc.contributor.authorLazar, B.
dc.contributor.authorBoaretto, E.
dc.contributor.authorYechieli, Y.
dc.contributor.authorHerut, B.
dc.date.accessioned2021-02-11T21:46:07Z
dc.date.available2021-02-11T21:46:07Z
dc.date.issued2004-01-01
dc.identifier.citationSivan, O., Lazar, B., Boaretto, E., Yechieli, Y., & Herut, B. (2004). Radiocarbon in porewater of continental shelf sediments (southeast Mediterranean). Radiocarbon, 46(2), 633-642.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200035682
dc.identifier.urihttp://hdl.handle.net/10150/654914
dc.descriptionFrom the 18th International Radiocarbon Conference held in Wellington, New Zealand, September 1-5, 2003.
dc.description.abstractIn this study, we aim to characterize the main processes controlling 14CDIC concentrations in porewater at the shallow shelf (water depth less than 120 m) off the Mediterranean coast of Israel. At these water depths, we expected to find evidence for seawater penetration toward the coast, since this area was flooded by seawater only some 18,000 yr ago (the end of the Last Glacial period). Measurements of the chemical composition (14CDIC) and stable carbon isotopic composition (delta-13CDIC) were performed in several sediment cores (40-250 cm long) at water depths between 6 and 115 m. At water depths of 60 m, represented by a 2.5-m-long sediment core, the porewater 14CDIC levels (85-87 pMC) were lower than the corresponding sediment values in each layer (92-95 pMC), mainly due to the oxidation of relatively old organic matter (about 70 pMC) with no evidence to advection. In contrast, sediment cores from water depths shallower than 50 m showed only slight anaerobic oxidation and high 14CDIC values of approximately 100 pMC, indicating possible downward advection. These geochemical observations support the perception that the penetration of seawater into the coastal aquifer occurs at the shallow water zone (<50 m), while further verification by deeper cores is required.
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 Porewater of Continental Shelf Sediments (Southeast Mediterranean)
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.beginpage633
dc.source.endpage642
refterms.dateFOA2021-02-11T21:46:07Z


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