Paleoceanography of the northwestern Pacific across the Early-Middle Pleistocene boundary (Marine Isotope Stages 20-18).

ABSTRACT: The fluctuating position of the boundary between the Kuroshio (warm) and Oyashio (cold) currents in the mid-latitude western North Pacific affects both heat transport and air-ocean interactions and has significant consequences for the East Asian climate. We reconstruct the paleoceanography of Marine Isotope Stages (MIS) 20-18, MIS 19 being one of the closest astronomical analogues to the present interglacial, through multiple proxies including microfossil assemblage data, planktonic foraminiferal isotopes (δ¹⁸O and δ¹³C), and foraminiferal Mg/Ca-based temperature records, from the Chiba composite section (CbCS) exposed on the Boso Peninsula, east-central Japan. Principal component analysis (PCA) is used to capture dominant patterns of the temporal variation in these m

SUBMITTER: Kubota Y 

PROVIDER: S-EPMC8550468 | biostudies-literature | 2021

REPOSITORIES: biostudies-literature