georefid:2012-083045SEDIS Publication Catalogueana.macario@awi.dehttp://sedis.iodp.org/pub-catalogue/informationpointOfContact2013-07-08T00:00:00Zhttp://sedis.iodp.org/pub-catalogue/index.php?id=2012-083045<gco:CharacterString>Response of the North Pacific to orbital forcing during late Quaternary from the view of paleotemperature records</gco:CharacterString>2009-01-01publicationgeorefid:2012-083045Yamamoto, MasanobuHokkaido University, Faculty of Environmental Earth Science, Sapporo, JapanauthorPalaeontological Society of Japan, [Tokyo], JapanpublisherdocumentHardcopyKaseki = Fossils8645-58We present a palaeoceanographic perspective of the North Pacific during the last two glacial cycles based on U (super K') (sub 37) -derived palaeotemperature records from Japan and California margins. At the Japan margin, the sea surface temperature (SST) in the Kuroshio-Oyashio transition has varied in response to precessional cycle. At the California margin, SST has varied in response to ice volume changes, but the SST difference between inshore and offshore sites (Delta SST (sub northeastern Pacific (NEP)) = SST (sub ODP1014) -SST (sub ODP1016) ) has responded to precessional cycle. Comparison of Delta SST (sub NEP) and the SST (sub MD01-2421) of the central Japan margin revealed anti-phase variation; high Delta SST (sub NEP) (indicating weakening of the California Current) corresponded to low SST at the Japan margin (indicating the southward displacement of the northwestern Pacific subarctic boundary and weakening of the Kuroshio Extension), and vice versa. This finding suggests that the intensity of the North Pacific subtropical gyre circulation has varied in response to precessional forcing.completedQuaternary geologyalgaealkenonesCenozoicCoccolithophoraceaecurrentsEast PacificEmilianiaEmiliania huxleyiGeophyrocapsa oceanicaglacial environmentinterglacial environmentketonesKuroshioLeg 167microfossilsNorth PacificNortheast Pacificocean currentsOcean Drilling ProgramODP Site 1014ODP Site 1016organic compoundsPacific Oceanpaleo-oceanographypaleotemperaturePlantaeQuaternarysea-surface temperatureSEM datasubtropical environmenttemperatureupper Quaternaryurn:org.iodp:exp:167urnlargerWorkCitationcampaignurn:org.iodp:exp:167:site:1014urnlargerWorkCitationstudyurn:org.iodp:exp:167urnlargerWorkCitationcampaignurn:org.iodp:exp:167:site:1016urnlargerWorkCitationstudyurn:org.iodp:exp:167urnlargerWorkCitationcampaignJapanesegeoscientificInformation-122.1635-119.585332.500234.3220