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High-frequency glacial climate instability during the early pleistocene: insights from IODP site U1387 (Gulf of Cadiz)

2025-09Journal article Open access
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dc.contributor.authorTrotta, Samanta
dc.contributor.authorDuque Castaño, Monica Liliana
dc.contributor.authorRodrigues, Teresa
dc.contributor.authorVoelker, Antje
dc.contributor.authorMaiorano, Patrizia
dc.contributor.authorBalestra, Barbara
dc.contributor.authorFlores, José-Abel
dc.contributor.authorSiniscalchi, Agata
dc.contributor.authorAddante, Marina
dc.contributor.authorMarino, Maria
dc.date.accessioned2025-07-24T12:53:26Z
dc.date.available2025-07-24T12:53:26Z
dc.date.issued2025-09
dc.description.abstractWe provide new high-resolution data on alkenone-derived sea surface temperature (SST) and calcareous plankton key taxa in temporally well constrained, high resolution benthic and planktonic oxygen isotope records at Integrated Ocean Drilling Program site U1387 in the Gulf of Cadiz. The investigated time interval encompasses the Early Pleistocene marine isotope stages (MIS) 48 to MIS 43. The aim is to evidence millennial climate variability during glacial phases of the “41 kyr world” and understand the impact of North Atlantic climate dynamics on the southern Portuguese margin. Neogloboquadrina pachyderma and Coccolithus pelagicus ssp. pelagicus record prominent, short-term abundance peaks concurrent with short-term SST minima and heavier values of ™18O in late MIS 48 and in the middle of MIS 46 and MIS 44. Superimposed on the obliquity and precession forcing, the wavelet analysis carried out on selected proxies (planktonic ™18O, N. pachyderma, C. pelagicus ssp. pelagicus, alkenone derived sea surface temperature) highlighted the occurrence of a higher frequency climate variability.eng
dc.description.sponsorshipPTDC/CTAGEO/29897/2017; PID2021-128322NB-I00
dc.identifier.doi10.1016/j.palaeo.2025.113041
dc.identifier.issn0031-0182
dc.identifier.urihttp://hdl.handle.net/10400.1/27487
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationSurface and Mediterranean Outflow Water Dynamics in the Gulf of Cadiz during the Pleistocene
dc.relationAlgarve Centre for Marine Sciences
dc.relationCentre for Marine and Environmental Research
dc.relationAlgarve Centre for Marine Sciences
dc.relation.ispartofPalaeogeography, Palaeoclimatology, Palaeoecology
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectCalcareous plankton
dc.subjectAlkenone-SST
dc.subjectBenthic and planktonic δ18O
dc.subjectMillennial climate variability
dc.subjectNorth Atlantic
dc.titleHigh-frequency glacial climate instability during the early pleistocene: insights from IODP site U1387 (Gulf of Cadiz)eng
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSurface and Mediterranean Outflow Water Dynamics in the Gulf of Cadiz during the Pleistocene
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardTitleCentre for Marine and Environmental Research
oaire.awardTitleAlgarve Centre for Marine Sciences
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FMAR-PRO%2F3761%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F04326%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/LA%2FP%2F0101%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04326%2F2020/PT
oaire.citation.startPage113041
oaire.citation.titlePalaeogeography, Palaeoclimatology, Palaeoecology
oaire.citation.volume674
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameDuque Castaño
person.familyNameRodrigues
person.familyNameVoelker
person.givenNameMonica Liliana
person.givenNameTeresa
person.givenNameAntje
person.identifier2315310
person.identifier.ciencia-idAA12-8310-C284
person.identifier.ciencia-idEC18-2390-9594
person.identifier.ciencia-idC11E-D8E6-CDFA
person.identifier.orcid0000-0001-8420-3080
person.identifier.orcid0000-0001-7811-7506
person.identifier.orcid0000-0001-6465-6023
person.identifier.ridG-2912-2013
person.identifier.ridC-5427-2012
person.identifier.scopus-author-id7004330274
person.identifier.scopus-author-id8784446000
project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
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