Anthropogenic lead isotopes in Antarctica
Identifieur interne : 002D63 ( Istex/Corpus ); précédent : 002D62; suivant : 002D64Anthropogenic lead isotopes in Antarctica
Auteurs : K. J. R. Rosman ; W. Chisholm ; C. F. Boutron ; J. Candelone ; C. C. PattersonSource :
- Geophysical Research Letters [ 0094-8276 ] ; 1994-12-01.
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Abstract
We report the first measurements of Pb isotopes in Antarctic snow, which show that even recent snow containing 2.3 pg/g is highly polluted with anthropogenic Pb. This follows from a comparison of isotope abundances of Pb in surface snow and terrestrial dust extracted from ancient Antarctic ice (Dome C, depth 308 m, approximate age 7,500 a BP), the latter being distinctly more radiogenic. This result is independent of geochemical arguments based on measurements of Al, Na and SO4. South America is suggested as a likely source of this anthropogenic Pb. The presence of significantly less radiogenic Pb in the snow adjacent to two Antarctic base stations indicates that there is contamination from station emissions, although emission from Australia is an alternative explanation for a site 33 km from Dumont d'Urville.
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DOI: 10.1029/94GL02603
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ISTEX:F2524AB6D8FE1DA08184E286230D6A9938B09961Le document en format XML
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C.</givenNames> <familyName>Patterson</familyName></personName></creator></creators><affiliationGroup><affiliation type="organization" xml:id="grl7947-aff-0001"><unparsedAffiliation>Department of Applied Physics, Curtin University of Technology, Bentley, Australia</unparsedAffiliation></affiliation><affiliation type="organization" xml:id="grl7947-aff-0002"><unparsedAffiliation>Laboratoire de Glaciologie et Géophysique de l'Environnement du CNRS., St Martin d'Hères, France</unparsedAffiliation></affiliation><affiliation type="organization" xml:id="grl7947-aff-0003"><unparsedAffiliation>California Institute of Technology, Pasadena</unparsedAffiliation></affiliation><affiliation type="organization" xml:id="grl7947-aff-0004"><unparsedAffiliation>UFR de Mécanique, Université Joseph Fourier de Grenoble, Domaine Universitaire, BP 68, 38401 Grenoble, France</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main"><p xml:id="grl7947-para-0001">We report the first measurements of Pb isotopes in Antarctic snow, which show that even recent snow containing 2.3 pg/g is highly polluted with anthropogenic Pb. This follows from a comparison of isotope abundances of Pb in surface snow and terrestrial dust extracted from ancient Antarctic ice (Dome C, depth 308 m, approximate age 7,500 a BP), the latter being distinctly more radiogenic. This result is independent of geochemical arguments based on measurements of Al, Na and SO<sub>4</sub>. South America is suggested as a likely source of this anthropogenic Pb. 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R.</namePart><namePart type="family">Rosman</namePart><affiliation>Department of Applied Physics, Curtin University of Technology, Bentley, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">W.</namePart><namePart type="family">Chisholm</namePart><affiliation>Department of Applied Physics, Curtin University of Technology, Bentley, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C. F.</namePart><namePart type="family">Boutron</namePart><affiliation>UFR de Mécanique, Université Joseph Fourier de Grenoble, Domaine Universitaire, BP 68, 38401 Grenoble, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.‐P.</namePart><namePart type="family">Candelone</namePart><affiliation>Laboratoire de Glaciologie et Géophysique de l'Environnement du CNRS., St Martin d'Hères, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">C. C.</namePart><namePart type="family">Patterson</namePart><affiliation>California Institute of Technology, Pasadena</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">1994-12-01</dateIssued><dateCaptured encoding="w3cdtf">1994-04-19</dateCaptured><dateValid encoding="w3cdtf">1994-09-07</dateValid><edition>.</edition><copyrightDate encoding="w3cdtf">1994</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><abstract>We report the first measurements of Pb isotopes in Antarctic snow, which show that even recent snow containing 2.3 pg/g is highly polluted with anthropogenic Pb. This follows from a comparison of isotope abundances of Pb in surface snow and terrestrial dust extracted from ancient Antarctic ice (Dome C, depth 308 m, approximate age 7,500 a BP), the latter being distinctly more radiogenic. This result is independent of geochemical arguments based on measurements of Al, Na and SO4. South America is suggested as a likely source of this anthropogenic Pb. The presence of significantly less radiogenic Pb in the snow adjacent to two Antarctic base stations indicates that there is contamination from station emissions, although emission from Australia is an alternative explanation for a site 33 km from Dumont d'Urville.</abstract><relatedItem type="host"><titleInfo><title>Geophysical Research Letters</title></titleInfo><titleInfo type="abbreviated"><title>Geophys. Res. Lett.</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/0300">Atmospheric Composition and Structure</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0305">Atmospheric Composition and Structure: Aerosols and particles</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0345">Atmospheric Composition and Structure: Pollution—urban and regional</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3600">Mineralogy and Petrology</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3645">Mineralogy, Petrology, and Rock Chemistry: Isotope composition</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9300">Geographic Location</topic><topic authorityURI="http://psi.agu.org/taxonomy5/9310">Information Related to Geographic Region: Antarctica</topic></subject><identifier type="ISSN">0094-8276</identifier><identifier type="eISSN">1944-8007</identifier><identifier type="DOI">10.1002/(ISSN)1944-8007</identifier><identifier type="PublisherID">GRL</identifier><part><date>1994</date><detail type="volume"><caption>vol.</caption><number>21</number></detail><detail type="issue"><caption>no.</caption><number>24</number></detail><extent unit="pages"><start>2669</start><end>2672</end><total>4</total></extent></part></relatedItem><identifier type="istex">F2524AB6D8FE1DA08184E286230D6A9938B09961</identifier><identifier type="ark">ark:/67375/WNG-M45RVV24-4</identifier><identifier type="DOI">10.1029/94GL02603</identifier><identifier type="ArticleID">94GL02603</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 1994 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/F2524AB6D8FE1DA08184E286230D6A9938B09961/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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