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Article: Evolution of the eastern tropical Pacific through Plio-Pleistocene glaciation

TitleEvolution of the eastern tropical Pacific through Plio-Pleistocene glaciation
Authors
Issue Date2006
PublisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.org
Citation
Science, 2006, v. 312 n. 5770, p. 79-83 How to Cite?
AbstractA tropical Pacific climate state resembling that of a permanent El Niño is hypothesized to have ended as a result of a reorganization of the ocean heat budget ∼3 million years ago, a time when large ice sheets appeared in the high latitudes of the Northern Hemisphere. We report a high-resolution alkenone reconstruction of conditions in the heart of the eastern equatorial Pacific (EEP) cold tongue that reflects the combined influences of changes in the equatorial thermocline, the properties of the thermocline's source waters, atmospheric greenhouse gas content, and orbital variations on sea surface temperature (SST) and biological productivity over the past 5 million years. Our data indicate that the intensification of Northern Hemisphere glaciation ∼3 million years ago did not interrupt an almost monotonic cooling of the EEP during the Plio-Pleistocene. SST and productivity in the eastern tropical Pacific varied in phase with global ice volume changes at a dominant 41,000-year (obliquity) frequency throughout this time. Changes in the Southern Hemisphere most likely modulated most of the changes observed.
Persistent Identifierhttp://hdl.handle.net/10722/151184
ISSN
2015 Impact Factor: 34.661
2015 SCImago Journal Rankings: 13.217
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLawrence, KTen_US
dc.contributor.authorLiu, Zen_US
dc.contributor.authorHerbert, TDen_US
dc.date.accessioned2012-06-26T06:18:23Z-
dc.date.available2012-06-26T06:18:23Z-
dc.date.issued2006en_US
dc.identifier.citationScience, 2006, v. 312 n. 5770, p. 79-83en_US
dc.identifier.issn0036-8075en_US
dc.identifier.urihttp://hdl.handle.net/10722/151184-
dc.description.abstractA tropical Pacific climate state resembling that of a permanent El Niño is hypothesized to have ended as a result of a reorganization of the ocean heat budget ∼3 million years ago, a time when large ice sheets appeared in the high latitudes of the Northern Hemisphere. We report a high-resolution alkenone reconstruction of conditions in the heart of the eastern equatorial Pacific (EEP) cold tongue that reflects the combined influences of changes in the equatorial thermocline, the properties of the thermocline's source waters, atmospheric greenhouse gas content, and orbital variations on sea surface temperature (SST) and biological productivity over the past 5 million years. Our data indicate that the intensification of Northern Hemisphere glaciation ∼3 million years ago did not interrupt an almost monotonic cooling of the EEP during the Plio-Pleistocene. SST and productivity in the eastern tropical Pacific varied in phase with global ice volume changes at a dominant 41,000-year (obliquity) frequency throughout this time. Changes in the Southern Hemisphere most likely modulated most of the changes observed.en_US
dc.languageengen_US
dc.publisherAmerican Association for the Advancement of Science. The Journal's web site is located at http://sciencemag.orgen_US
dc.relation.ispartofScienceen_US
dc.titleEvolution of the eastern tropical Pacific through Plio-Pleistocene glaciationen_US
dc.typeArticleen_US
dc.identifier.emailLiu, Z:zhliu@hku.hken_US
dc.identifier.authorityLiu, Z=rp00750en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1126/science.1120395en_US
dc.identifier.scopuseid_2-s2.0-33645693095en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33645693095&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume312en_US
dc.identifier.issue5770en_US
dc.identifier.spage79en_US
dc.identifier.epage83en_US
dc.identifier.isiWOS:000236584400033-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLawrence, KT=23469562700en_US
dc.identifier.scopusauthoridLiu, Z=16177844800en_US
dc.identifier.scopusauthoridHerbert, TD=7005866440en_US

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