Southwest Pacific Ocean response to a warmer world: Insights from marine isotope stage 5e

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dc.citation.journalTitlePaleoceanography
dc.contributor.authorCortese, G.spa
dc.contributor.authorDunbar, G. B.spa
dc.contributor.authorCarter, L.spa
dc.contributor.authorScott, G.spa
dc.contributor.authorBostock, H.spa
dc.contributor.authorBowen, M.spa
dc.contributor.authorCrundwell, M.spa
dc.contributor.authorHayward, B. W.spa
dc.contributor.authorHoward, W.spa
dc.contributor.authorMartinez, J. I.spa
dc.contributor.authorMoy, A.spa
dc.contributor.authorNeil, H.spa
dc.contributor.authorSabaa, A.spa
dc.contributor.authorSturm, A.spa
dc.contributor.departmentUniversidad EAFIT. Departamento de Geologíaspa
dc.contributor.researchgroupCiencias del Marspa
dc.date.accessioned2021-03-23T20:20:22Z
dc.date.available2021-03-23T20:20:22Z
dc.date.issued2013-09-01
dc.description.abstractPaleoceanographic archives derived from 17 marine sediment cores reconstruct the response of the Southwest Pacific Ocean to the peak interglacial, Marine Isotope Stage (MIS) 5e (ca. 125 ka). Paleo-Sea Surface Temperature (SST) estimates were obtained from the Random Forest model - an ensemble decision tree tool - applied to core-top planktonic foraminiferal faunas calibrated to modern SSTs. The reconstructed geographic pattern of the SST anomaly (maximum SST between 120 and 132 ka minus mean modern SST) seems to indicate how MIS 5e conditions were generally warmer in the Southwest Pacific, especially in the western Tasman Sea where a strengthened East Australian Current (EAC) likely extended subtropical influence to ca. 45°S off Tasmania. In contrast, the eastern Tasman Sea may have had a modest cooling except around 45°S. The observed pattern resembles that developing under the present warming trend in the region. An increase in wind stress curl over the modern South Pacific is hypothesized to have spun-up the South Pacific Subtropical Gyre, with concurrent increase in subtropical flow in the western boundary currents that include the EAC. However, warmer temperatures along the Subtropical Front and Campbell Plateau to the south suggest that the relative influence of the boundary inflows to eastern New Zealand may have differed in MIS 5e, and these currents may have followed different paths compared to today. Key Points Oceanic conditions at 125 kyr seem to agree with recent observations/trendsEast Australian Current probably stronger and Tasman Front cooler during MIS 5eObserved oceanographic changes likely linked to increases in wind stress curl ©2013. American Geophysical Union. All Rights Reserved.eng
dc.identifierhttps://eafit.fundanetsuite.com/Publicaciones/ProdCientif/PublicacionFrw.aspx?id=1294
dc.identifier.doi10.1002/palo.20052
dc.identifier.issn08838305
dc.identifier.issn19449186
dc.identifier.otherWOS;000325628700017
dc.identifier.otherSCOPUS;2-s2.0-84884368893
dc.identifier.urihttp://hdl.handle.net/10784/26867
dc.language.isoengeng
dc.publisherAMER GEOPHYSICAL UNION
dc.relation.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84884368893&doi=10.1002%2fpalo.20052&partnerID=40&md5=b1d7a035e7253a8e05c544f449be84a6
dc.rightshttps://v2.sherpa.ac.uk/id/publication/issn/0883-8305
dc.sourcePaleoceanography
dc.subject.keywordcalibrationeng
dc.subject.keywordcoolingeng
dc.subject.keyworddepositional environmenteng
dc.subject.keywordinterglacialeng
dc.subject.keywordmarine isotope stageeng
dc.subject.keywordmarine sedimenteng
dc.subject.keywordpaleoceanographyeng
dc.subject.keywordplanktonic foraminiferaeng
dc.subject.keywordsea surface temperatureeng
dc.subject.keywordsediment coreeng
dc.subject.keywordwarmingeng
dc.subject.keywordwestern boundary currenteng
dc.subject.keywordwind stresseng
dc.subject.keywordAustraliaeng
dc.subject.keywordCampbell Plateaueng
dc.subject.keywordEast Australian Currenteng
dc.subject.keywordNew Zealandeng
dc.subject.keywordPacific Oceaneng
dc.subject.keywordPacific Ocean (South)eng
dc.subject.keywordPacific Ocean (Southwest)eng
dc.subject.keywordTasman Seaeng
dc.subject.keywordTasmaniaeng
dc.subject.keywordForaminiferaeng
dc.titleSouthwest Pacific Ocean response to a warmer world: Insights from marine isotope stage 5eeng
dc.typeinfo:eu-repo/semantics/articleeng
dc.typearticleeng
dc.typeinfo:eu-repo/semantics/publishedVersioneng
dc.typepublishedVersioneng
dc.type.localArtículospa

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