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Continuous transport of Pacific-derived anthropogenic radionuclides towards the Indian Ocean

Pittauerova, Daniela; Tims, Stephen; Froehlich (previously Srncik), Michaela; Fifield, L Keith; Wallner, Anton; McNeil, Steven; Fischer, Helmut W.

Description

Unusually high concentrations of americium and plutonium have been observed in a sediment core collected from the eastern Lombok Basin between Sumba and Sumbawa Islands in the Indonesian Archipelago. Gamma spectrometry and accelerator mass spectrometry data together with radiometric dating of the core provide a high-resolution record of ongoing deposition of anthropogenic radionuclides. A plutonium signature characteristic of the Pacific Proving Grounds (PPG) dominates in the first two decades...[Show more]

dc.contributor.authorPittauerova, Daniela
dc.contributor.authorTims, Stephen
dc.contributor.authorFroehlich (previously Srncik), Michaela
dc.contributor.authorFifield, L Keith
dc.contributor.authorWallner, Anton
dc.contributor.authorMcNeil, Steven
dc.contributor.authorFischer, Helmut W.
dc.date.accessioned2020-01-17T01:52:53Z
dc.date.available2020-01-17T01:52:53Z
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/1885/198322
dc.description.abstractUnusually high concentrations of americium and plutonium have been observed in a sediment core collected from the eastern Lombok Basin between Sumba and Sumbawa Islands in the Indonesian Archipelago. Gamma spectrometry and accelerator mass spectrometry data together with radiometric dating of the core provide a high-resolution record of ongoing deposition of anthropogenic radionuclides. A plutonium signature characteristic of the Pacific Proving Grounds (PPG) dominates in the first two decades after the start of the high yield atmospheric tests in 1950’s. Approximately 40–70% of plutonium at this site in the post 1970 period originates from the PPG. This sediment record of transuranic isotopes deposition over the last 55 years provides evidence for the continuous long-distance transport of particle-reactive radionuclides from the Pacific Ocean towards the Indian Ocean
dc.description.sponsorshipD.P. was funded through DFGResearch Center/Cluster of Excellence. “The Ocean in the Earth System” and she appreciates the support provided by GLOMAR, Bremen International Graduate School for Marine Sciences.
dc.format.mimetypeapplication/pdf
dc.language.isoen_AU
dc.publisherNature Publishing Group
dc.rights© The Author(s) 2017
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.sourceScientific Reports
dc.titleContinuous transport of Pacific-derived anthropogenic radionuclides towards the Indian Ocean
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume7
dc.date.issued2017
local.identifier.absfor050204 - Environmental Impact Assessment
local.identifier.ariespublicationa383154xPUB5597
local.publisher.urlhttps://www.nature.com/
local.type.statusPublished Version
local.contributor.affiliationPittauerova, Daniela, University of Bremen
local.contributor.affiliationTims, Stephen, College of Science, ANU
local.contributor.affiliationFroehlich (previously Srncik) , Michaela, College of Science, ANU
local.contributor.affiliationFifield, L Keith, College of Science, ANU
local.contributor.affiliationWallner, Anton, College of Science, ANU
local.contributor.affiliationMcNeil, Steven, College of Science, ANU
local.contributor.affiliationFischer, Helmut W., University of Bremen
local.bibliographicCitation.startpage1
local.bibliographicCitation.lastpage8
local.identifier.doi10.1038/srep44679
dc.date.updated2019-11-25T07:21:57Z
local.identifier.scopusID2-s2.0-85015757953
local.identifier.thomsonID000397003300001
dcterms.accessRightsOpen Access
dc.provenanceThis work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
dc.rights.licenseCreative Commons Attribution 4.0 International License
CollectionsANU Research Publications

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