ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea
Identifieur interne : 002800 ( Istex/Corpus ); précédent : 002799; suivant : 002801ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea
Auteurs : Robin Driscoll ; Mary Elliot ; Tom Russon ; Kevin Welsh ; Yusuke Yokoyama ; Alexander TudhopeSource :
- Geophysical Research Letters [ 0094-8276 ] ; 2014-10-16.
Abstract
We present 12 seasonally resolved δ18O profiles of giant clams (Tridacna sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ18O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.
Url:
DOI: 10.1002/2014GL061446
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<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title xml:lang="en">ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea</title><author><name sortKey="Driscoll, Robin" sort="Driscoll, Robin" uniqKey="Driscoll R" first="Robin" last="Driscoll">Robin Driscoll</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation><affiliation><mods:affiliation>Correspondence to: R. Driscoll,</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: r.e.driscoll@ed.ac.uk</mods:affiliation></affiliation></author><author><name sortKey="Elliot, Mary" sort="Elliot, Mary" uniqKey="Elliot M" first="Mary" last="Elliot">Mary Elliot</name><affiliation><mods:affiliation>Laboratoire de Planetologie et Geodynamique, Université de Nantes, Nantes, France</mods:affiliation></affiliation></author><author><name sortKey="Russon, Tom" sort="Russon, Tom" uniqKey="Russon T" first="Tom" last="Russon">Tom Russon</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation></author><author><name sortKey="Welsh, Kevin" sort="Welsh, Kevin" uniqKey="Welsh K" first="Kevin" last="Welsh">Kevin Welsh</name><affiliation><mods:affiliation>School of Earth Sciences, University of Queensland, Queensland, Brisbane, Australia</mods:affiliation></affiliation></author><author><name sortKey="Yokoyama, Yusuke" sort="Yokoyama, Yusuke" uniqKey="Yokoyama Y" first="Yusuke" last="Yokoyama">Yusuke Yokoyama</name><affiliation><mods:affiliation>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences, University of Tokyo, Tokyo, Japan</mods:affiliation></affiliation></author><author><name sortKey="Tudhope, Alexander" sort="Tudhope, Alexander" uniqKey="Tudhope A" first="Alexander" last="Tudhope">Alexander Tudhope</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:D65812A0E5EE7640266C3C8C67540D2255DE593F</idno><date when="2014" year="2014">2014</date><idno type="doi">10.1002/2014GL061446</idno><idno type="url">https://api.istex.fr/document/D65812A0E5EE7640266C3C8C67540D2255DE593F/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">002800</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">002800</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main">ENSO reconstructions over the past 60 ka using giant clams (<hi rend="italic">Tridacna</hi> sp.) from Papua New Guinea</title><author><name sortKey="Driscoll, Robin" sort="Driscoll, Robin" uniqKey="Driscoll R" first="Robin" last="Driscoll">Robin Driscoll</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation><affiliation><mods:affiliation>Correspondence to: R. Driscoll,</mods:affiliation></affiliation><affiliation><mods:affiliation>E-mail: r.e.driscoll@ed.ac.uk</mods:affiliation></affiliation></author><author><name sortKey="Elliot, Mary" sort="Elliot, Mary" uniqKey="Elliot M" first="Mary" last="Elliot">Mary Elliot</name><affiliation><mods:affiliation>Laboratoire de Planetologie et Geodynamique, Université de Nantes, Nantes, France</mods:affiliation></affiliation></author><author><name sortKey="Russon, Tom" sort="Russon, Tom" uniqKey="Russon T" first="Tom" last="Russon">Tom Russon</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation></author><author><name sortKey="Welsh, Kevin" sort="Welsh, Kevin" uniqKey="Welsh K" first="Kevin" last="Welsh">Kevin Welsh</name><affiliation><mods:affiliation>School of Earth Sciences, University of Queensland, Queensland, Brisbane, Australia</mods:affiliation></affiliation></author><author><name sortKey="Yokoyama, Yusuke" sort="Yokoyama, Yusuke" uniqKey="Yokoyama Y" first="Yusuke" last="Yokoyama">Yusuke Yokoyama</name><affiliation><mods:affiliation>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences, University of Tokyo, Tokyo, Japan</mods:affiliation></affiliation></author><author><name sortKey="Tudhope, Alexander" sort="Tudhope, Alexander" uniqKey="Tudhope A" first="Alexander" last="Tudhope">Alexander Tudhope</name><affiliation><mods:affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Geophysical Research Letters</title><title level="j" type="alt">GEOPHYSICAL RESEARCH LETTERS</title><idno type="ISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><imprint><biblScope unit="vol">41</biblScope><biblScope unit="issue">19</biblScope><biblScope unit="page" from="6819">6819</biblScope><biblScope unit="page" to="6825">6825</biblScope><biblScope unit="page-count">7</biblScope><date type="published" when="2014-10-16">2014-10-16</date></imprint><idno type="ISSN">0094-8276</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0094-8276</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">We present 12 seasonally resolved δ18O profiles of giant clams (Tridacna sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ18O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.</div></front></TEI><istex><corpusName>wiley</corpusName><author><json:item><name>Robin Driscoll</name><affiliations><json:string>School of GeoSciences, University of Edinburgh, Edinburgh, UK</json:string><json:string>Correspondence to: R. Driscoll,</json:string><json:string>E-mail: r.e.driscoll@ed.ac.uk</json:string></affiliations></json:item><json:item><name>Mary Elliot</name><affiliations><json:string>Laboratoire de Planetologie et Geodynamique, Université de Nantes, Nantes, France</json:string></affiliations></json:item><json:item><name>Tom Russon</name><affiliations><json:string>School of GeoSciences, University of Edinburgh, Edinburgh, UK</json:string></affiliations></json:item><json:item><name>Kevin Welsh</name><affiliations><json:string>School of Earth Sciences, University of Queensland, Queensland, Brisbane, Australia</json:string></affiliations></json:item><json:item><name>Yusuke Yokoyama</name><affiliations><json:string>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences, University of Tokyo, Tokyo, Japan</json:string></affiliations></json:item><json:item><name>Alexander Tudhope</name><affiliations><json:string>School of GeoSciences, University of Edinburgh, Edinburgh, UK</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>ENSO</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>giant clams</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>Holocene</value></json:item><json:item><lang><json:string>eng</json:string></lang><value>marine isotope stage 3</value></json:item></subject><articleId><json:string>GRL52153</json:string></articleId><arkIstex>ark:/67375/WNG-4M7V23HF-Q</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>We present 12 seasonally resolved δ18O profiles of giant clams (Tridacna sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ18O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.</abstract><qualityIndicators><score>8.071</score><pdfWordCount>4679</pdfWordCount><pdfCharCount>27257</pdfCharCount><pdfVersion>1.6</pdfVersion><pdfPageCount>7</pdfPageCount><pdfPageSize>612 x 792 pts (letter)</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>116</abstractWordCount><abstractCharCount>764</abstractCharCount><keywordCount>4</keywordCount></qualityIndicators><title>ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea</title><genre><json:string>article</json:string></genre><host><title>Geophysical Research Letters</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)1944-8007</json:string></doi><issn><json:string>0094-8276</json:string></issn><eissn><json:string>1944-8007</json:string></eissn><publisherId><json:string>GRL</json:string></publisherId><volume>41</volume><issue>19</issue><pages><first>6819</first><last>6825</last><total>7</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>BIOGEOSCIENCES</value></json:item><json:item><value>Paleoclimatology and paleoceanography</value></json:item><json:item><value>ATMOSPHERIC PROCESSES</value></json:item><json:item><value>Paleoclimatology</value></json:item><json:item><value>OCEANOGRAPHY: PHYSICAL</value></json:item><json:item><value>ENSO</value></json:item><json:item><value>PALEOCEANOGRAPHY</value></json:item><json:item><value>PALEOCEANOGRAPHY</value></json:item><json:item><value>El Nino</value></json:item><json:item><value>Glacial</value></json:item><json:item><value>Isotopic stage</value></json:item><json:item><value>Research Letter</value></json:item></subject></host><ark><json:string>ark:/67375/WNG-4M7V23HF-Q</json:string></ark><publicationDate>2014</publicationDate><copyrightDate>2014</copyrightDate><doi><json:string>10.1002/2014GL061446</json:string></doi><id>D65812A0E5EE7640266C3C8C67540D2255DE593F</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/D65812A0E5EE7640266C3C8C67540D2255DE593F/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/D65812A0E5EE7640266C3C8C67540D2255DE593F/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/D65812A0E5EE7640266C3C8C67540D2255DE593F/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">ENSO reconstructions over the past 60 ka using giant clams (<hi rend="italic">Tridacna</hi> sp.) from Papua New Guinea</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Wiley Publishing Ltd</publisher><availability><licence>©2014. 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All Rights Reserved.</licence></availability><date type="published" when="2014-10-16"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">ENSO reconstructions over the past 60 ka using giant clams (<hi rend="italic">Tridacna</hi> sp.) from Papua New Guinea</title><title level="a" type="short">PALEOENSO RECONSTRUCTIONS IN GIANT CLAMS</title><author xml:id="author-0000" role="corresp"><persName><forename type="first">Robin</forename><surname>Driscoll</surname></persName><affiliation><orgName>School of GeoSciences</orgName><orgName>University of Edinburgh</orgName><address><settlement type="city">Edinburgh</settlement><country key="GB">UK</country></address></affiliation><affiliation>Correspondence to: R. Driscoll, r.e.driscoll@ed.ac.uk</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Mary</forename><surname>Elliot</surname></persName><affiliation><orgName>Laboratoire de Planetologie et Geodynamique</orgName><orgName>Université de Nantes</orgName><address><settlement type="city">Nantes</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Tom</forename><surname>Russon</surname></persName><affiliation><orgName>School of GeoSciences</orgName><orgName>University of Edinburgh</orgName><address><settlement type="city">Edinburgh</settlement><country key="GB">UK</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">Kevin</forename><surname>Welsh</surname></persName><affiliation><orgName>School of Earth Sciences</orgName><orgName>University of Queensland</orgName><address><settlement type="city">Brisbane</settlement><region>Queensland</region><country>Australia</country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">Yusuke</forename><surname>Yokoyama</surname></persName><affiliation><orgName>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences</orgName><orgName>University of Tokyo</orgName><address><settlement type="city">Tokyo</settlement><country key="JP">Japan</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">Alexander</forename><surname>Tudhope</surname></persName><affiliation><orgName>School of GeoSciences</orgName><orgName>University of Edinburgh</orgName><address><settlement type="city">Edinburgh</settlement><country key="GB">UK</country></address></affiliation></author><idno type="istex">D65812A0E5EE7640266C3C8C67540D2255DE593F</idno><idno type="ark">ark:/67375/WNG-4M7V23HF-Q</idno><idno type="DOI">10.1002/2014GL061446</idno><idno type="unit">GRL52153</idno><idno type="society">2014GL061446</idno><idno type="toTypesetVersion">file:GRL.GRL52153.pdf</idno></analytic><monogr><title level="j" type="main">Geophysical Research Letters</title><title level="j" type="alt">GEOPHYSICAL RESEARCH LETTERS</title><idno type="pISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><idno type="book-DOI">10.1002/(ISSN)1944-8007</idno><idno type="book-part-DOI">10.1002/grl.v41.19</idno><idno type="product">GRL</idno><imprint><biblScope unit="vol">41</biblScope><biblScope unit="issue">19</biblScope><biblScope unit="page" from="6819">6819</biblScope><biblScope unit="page" to="6825">6825</biblScope><biblScope unit="page-count">7</biblScope><date type="published" when="2014-10-16"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><head>Abstract</head><p>We present 12 seasonally resolved δ<hi rend="superscript">18</hi>O profiles of giant clams (<hi rend="italic">Tridacna</hi> sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ<hi rend="superscript">18</hi>O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.</p></abstract><abstract style="short"><head>Key Points</head><p><list xml:id="grl52153-list-0001" style="bulleted"><item>ENSO events can be seen in fossil Tridacna δ<hi rend="superscript">18</hi>O records</item><item>ENSO was suppressed during the early Holocene</item><item>ENSO events stronger than today can be seen in MIS3 data</item></list></p></abstract><textClass><keywords><term xml:id="grl52153-kwd-0001">ENSO</term><term xml:id="grl52153-kwd-0002">giant clams</term><term xml:id="grl52153-kwd-0003">Holocene</term><term xml:id="grl52153-kwd-0004">marine isotope stage 3</term></keywords><classCode scheme="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</classCode><classCode scheme="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</classCode><classCode scheme="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</classCode><keywords rend="articleCategory"><term>Research Letter</term></keywords><keywords rend="tocHeading1"><term>Research Letters</term></keywords><keywords rend="tocHeading2"><term>Oceans</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="grl52153"><header><publicationMeta level="product"><doi>10.1002/(ISSN)1944-8007</doi><issn type="print">0094-8276</issn><issn type="electronic">1944-8007</issn><idGroup><id type="product" value="GRL"></id></idGroup><titleGroup><title type="main" sort="GEOPHYSICAL RESEARCH LETTERS">Geophysical Research Letters</title><title type="short">Geophys. 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<lineatedText><line>Correspondence to: R. Driscoll,</line><line><email>r.e.driscoll@ed.ac.uk</email></line></lineatedText></correspondenceTo><subjectInfo><subject href="http://psi.agu.org/taxonomy5/0400">BIOGEOSCIENCES</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/0473">Paleoclimatology and paleoceanography</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/3300" role="crossTerm">ATMOSPHERIC PROCESSES</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/3344" role="crossTerm">Paleoclimatology</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4522">ENSO</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/4900" role="crossTerm">PALEOCEANOGRAPHY</subject><subject href="http://psi.agu.org/taxonomy5/4922">El Nino</subject><subject href="http://psi.agu.org/taxonomy5/4926">Glacial</subject><subject href="http://psi.agu.org/taxonomy5/4940">Isotopic stage</subject></subjectInfo></subjectInfo><selfCitationGroup><citation type="self" xml:id="grl52153-cit-0000"><author><familyName>Driscoll</familyName>,
<givenNames>R.</givenNames></author>,
<author><givenNames>M.</givenNames>
<familyName>Elliot</familyName></author>,
<author><givenNames>T.</givenNames>
<familyName>Russon</familyName></author>,
<author><givenNames>K.</givenNames>
<familyName>Welsh</familyName></author>,
<author><givenNames>Y.</givenNames>
<familyName>Yokoyama</familyName></author>, and
<author><givenNames>A.</givenNames>
<familyName>Tudhope</familyName></author> (<pubYear year="2014">2014</pubYear>), <articleTitle>ENSO reconstructions over the past 60 ka using giant clams (<i>Tridacna</i> sp.) from Papua New Guinea</articleTitle>, <journalTitle>Geophys. Res. Lett.</journalTitle>, <vol number="41">41</vol>, <pageFirst>6819</pageFirst>–<pageLast>6825</pageLast>, doi:<accessionId ref="info:doi/10.1002/2014GL061446">10.1002/2014GL061446</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:GRL.GRL52153.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="5"></count><count type="tableTotal" number="0"></count><count type="wordTotal" number="3129"></count></countGroup><titleGroup><title type="main">ENSO reconstructions over the past 60 ka using giant clams (<i>Tridacna</i> sp.) from Papua New Guinea</title><title type="shortAuthors">DRISCOLL ET AL.</title><title type="short">PALEOENSO RECONSTRUCTIONS IN GIANT CLAMS</title></titleGroup><creators><creator creatorRole="author" xml:id="grl52153-cr-0001" affiliationRef="#grl52153-aff-0001" corresponding="yes"><personName><givenNames>Robin</givenNames><familyName>Driscoll</familyName></personName></creator><creator creatorRole="author" xml:id="grl52153-cr-0002" affiliationRef="#grl52153-aff-0002"><personName><givenNames>Mary</givenNames><familyName>Elliot</familyName></personName></creator><creator creatorRole="author" xml:id="grl52153-cr-0003" affiliationRef="#grl52153-aff-0001"><personName><givenNames>Tom</givenNames><familyName>Russon</familyName></personName></creator><creator creatorRole="author" xml:id="grl52153-cr-0004" affiliationRef="#grl52153-aff-0003"><personName><givenNames>Kevin</givenNames><familyName>Welsh</familyName></personName></creator><creator creatorRole="author" xml:id="grl52153-cr-0005" affiliationRef="#grl52153-aff-0004"><personName><givenNames>Yusuke</givenNames><familyName>Yokoyama</familyName></personName></creator><creator creatorRole="author" xml:id="grl52153-cr-0006" affiliationRef="#grl52153-aff-0001"><personName><givenNames>Alexander</givenNames><familyName>Tudhope</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="GB" type="organization" xml:id="grl52153-aff-0001"><orgDiv>School of GeoSciences</orgDiv><orgName>University of Edinburgh</orgName><address><city>Edinburgh</city><country>UK</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="grl52153-aff-0002"><orgDiv>Laboratoire de Planetologie et Geodynamique</orgDiv><orgName>Université de Nantes</orgName><address><city>Nantes</city><country>France</country></address></affiliation><affiliation type="organization" xml:id="grl52153-aff-0003"><orgDiv>School of Earth Sciences</orgDiv><orgName>University of Queensland</orgName><address><city>Brisbane</city><countryPart>Queensland</countryPart><country>Australia</country></address></affiliation><affiliation countryCode="JP" type="organization" xml:id="grl52153-aff-0004"><orgDiv>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences</orgDiv><orgName>University of Tokyo</orgName><address><city>Tokyo</city><country>Japan</country></address></affiliation></affiliationGroup><keywordGroup type="author"><keyword xml:id="grl52153-kwd-0001">ENSO</keyword><keyword xml:id="grl52153-kwd-0002">giant clams</keyword><keyword xml:id="grl52153-kwd-0003">Holocene</keyword><keyword xml:id="grl52153-kwd-0004">marine isotope stage 3</keyword></keywordGroup><supportingInformation xml:id="grl52153-supinf-0001"><supportingInfoItem xml:id="grl52153-supitem-0001"><mediaResource alt="supplementary data" mimeType="text/plain" rendition="webOriginal" href="urn-x:wiley:00948276:media:grl52153:grl52153-sup-0001-GRL_readme"></mediaResource><caption>Readme</caption></supportingInfoItem><supportingInfoItem xml:id="grl52153-supitem-0002"><mediaResource alt="supplementary data" mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document" rendition="webOriginal" href="urn-x:wiley:00948276:media:grl52153:grl52153-sup-0002-GRL_Auxiliary_Figures_Sept"></mediaResource><caption>Tables S1 and S2 and Figures S1 and S2</caption></supportingInfoItem><supportingInfoItem xml:id="grl52153-supitem-0003"><mediaResource alt="supplementary data" mimeType="application/vnd.openxmlformats-officedocument.wordprocessingml.document" rendition="webOriginal" href="urn-x:wiley:00948276:media:grl52153:grl52153-sup-0003-GRL_Auxiliary_Material_Sept"></mediaResource><caption>Text S1</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><title type="main">Abstract</title><p>We present 12 seasonally resolved δ<sup>18</sup>O profiles of giant clams (<i>Tridacna</i> sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ<sup>18</sup>O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.</p></abstract><abstract type="short"><title type="main">Key Points</title><p><list style="bulleted" xml:id="grl52153-list-0001"><listItem xml:id="grl52153-li-0001">ENSO events can be seen in fossil Tridacna δ<sup>18</sup>O records</listItem><listItem xml:id="grl52153-li-0002">ENSO was suppressed during the early Holocene</listItem><listItem xml:id="grl52153-li-0003">ENSO events stronger than today can be seen in MIS3 data</listItem></list></p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>PALEOENSO RECONSTRUCTIONS IN GIANT CLAMS</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea</title></titleInfo><name type="personal"><namePart type="given">Robin</namePart><namePart type="family">Driscoll</namePart><affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</affiliation><affiliation>Correspondence to: R. Driscoll,</affiliation><affiliation>E-mail: r.e.driscoll@ed.ac.uk</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Mary</namePart><namePart type="family">Elliot</namePart><affiliation>Laboratoire de Planetologie et Geodynamique, Université de Nantes, Nantes, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Tom</namePart><namePart type="family">Russon</namePart><affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Kevin</namePart><namePart type="family">Welsh</namePart><affiliation>School of Earth Sciences, University of Queensland, Queensland, Brisbane, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Yusuke</namePart><namePart type="family">Yokoyama</namePart><affiliation>Atmosphere and Ocean Research Institute, Department of Earth and Planetary Sciences, University of Tokyo, Tokyo, Japan</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Alexander</namePart><namePart type="family">Tudhope</namePart><affiliation>School of GeoSciences, University of Edinburgh, Edinburgh, UK</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">2014-10-16</dateIssued><dateCreated encoding="w3cdtf">2014-09-27</dateCreated><dateCaptured encoding="w3cdtf">2014-08-10</dateCaptured><dateValid encoding="w3cdtf">2014-09-18</dateValid><edition>Driscoll, R., M. Elliot, T. Russon, K. Welsh, Y. Yokoyama, and A. Tudhope (2014), ENSO reconstructions over the past 60 ka using giant clams (Tridacna sp.) from Papua New Guinea, Geophys. Res. Lett., 41, 6819–6825, doi:10.1002/2014GL061446.</edition><copyrightDate encoding="w3cdtf">2014</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">5</extent><extent unit="tables">0</extent><extent unit="words">3129</extent></physicalDescription><abstract>We present 12 seasonally resolved δ18O profiles of giant clams (Tridacna sp.) from the Huon Peninsula, Papua New Guinea, spanning discrete periods of time (9–38 years) over the past 60 ka. The interannual anomaly time series of these shells are used to reconstruct interannual variability which can predominantly be attributed in the modern climate to the El Niño–Southern Oscillation (ENSO) in this region. We have found a significant reduction in interannual δ18O variance during the early Holocene, whereas during Marine Isotope Stage 3 there were at least some periods with variance not significantly different to the twentieth century. We show that ENSO variability seen during the late twentieth century is rare but not unprecedented within glacial climates.</abstract><abstract type="short">ENSO events can be seen in fossil Tridacna δ18O recordsENSO was suppressed during the early HoloceneENSO events stronger than today can be seen in MIS3 data</abstract><note type="additional physical form">ReadmeTables S1 and S2 and Figures S1 and S2Text S1</note><subject><genre>keywords</genre><topic>ENSO</topic><topic>giant clams</topic><topic>Holocene</topic><topic>marine isotope stage 3</topic></subject><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/taxonomy5/0400">BIOGEOSCIENCES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/0473">Paleoclimatology and paleoceanography</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3300">ATMOSPHERIC PROCESSES</topic><topic authorityURI="http://psi.agu.org/taxonomy5/3344">Paleoclimatology</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4500">OCEANOGRAPHY: PHYSICAL</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4522">ENSO</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4900">PALEOCEANOGRAPHY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4922">El Nino</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4926">Glacial</topic><topic authorityURI="http://psi.agu.org/taxonomy5/4940">Isotopic stage</topic></subject><subject><genre>article-category</genre><topic>Research Letter</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>2014</date><detail type="volume"><caption>vol.</caption><number>41</number></detail><detail type="issue"><caption>no.</caption><number>19</number></detail><extent unit="pages"><start>6819</start><end>6825</end><total>7</total></extent></part></relatedItem><identifier type="istex">D65812A0E5EE7640266C3C8C67540D2255DE593F</identifier><identifier type="ark">ark:/67375/WNG-4M7V23HF-Q</identifier><identifier type="DOI">10.1002/2014GL061446</identifier><identifier type="ArticleID">GRL52153</identifier><accessCondition type="use and reproduction" contentType="copyright">©2014. 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