Paleoceanographic evolution of the Japan Sea over the last 460 kyr – A coccolithophore perspective

M Saavedra-Pellitero; KH Baumann; SJ Gallagher; T Sagawa; R Tada

Journal article

Paleoceanographic evolution of the Japan Sea over the last 460 kyr – A coccolithophore perspective

M Saavedra-Pellitero, KH Baumann, SJ Gallagher, T Sagawa, R Tada

Marine Micropaleontology | ELSEVIER | Published : 2019

DOI: 10.1016/j.marmicro.2019.01.001

Abstract

Changes in the intensity of the influx of the Tsushima Warm Current (TWC) in the south-central part of the Japan Sea (JS), or East Sea in Korean, were reconstructed for the last 460 kyr at IODP Site U1427 using the composition and abundance of the coccolithophore assemblage. In addition, the recent distribution of coccolithophore taxa in the JS and the East China Sea was assessed using electron microscopy. Coccolithophore assemblages, dominated by Emiliania huxleyi and Gephyrocapsa species, and coccolith abundance reveal a strong relationship between sea level and ocean variability over the last five glacial/interglacial cycles, in good agreement with planktic foraminiferal data. Three diffe..

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University of Melbourne Researchers

Stephen Gallagher Author

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AUSTRALIAN MEMBERSHIP OF THE INTERNATION OCEAN DISCOVERY PROGRAM

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Grants

Awarded by Japan Society for the Promotion of Science

Funding Acknowledgements

We would like to thank Rick Murray, Carlos Alvarez Zarikian, Bobbi Brace and the 346 Expedition Scientists as well as technicians and crew on board Joides Resolution for the mudline and sediment samples retrieved during IODP Expedition 346. The KR15-10 science party and crew are also thanked for providing the surface sediment samples collected during this JAMSTEC Expedition onboard R/V Kairei. Laboratory assistance from Nele Vollmar is greatly appreciated. Thoughtful comments from four reviewers and the Editor-in-Chief, Rick Jordan, greatly improved this manuscript during the review process. We acknowledge IODP, ECORD and BGR for choosing to support Mariem Saavedra-Pellitero as a shipboard scientist during IODP Exp. 346. Funding was provided by the Australian and New Zealand IODP Consortium (ANZIC) and the Australian research Council (ARC) Basins Genesis Hub (IH130200012) to Stephen J. Gallagher. This study was also supported by the Japan Society for the Promotion of Science (JSPS) KAKENHI (15H02143). Data are available in Pangaea database (https://doi.pangaea.de/10.1594/PANGAEA.892989).