Paleoceanography in the North Pacific during Pliocene warm period

2014 Fiscal Year Final Research Report

• Project/Area Number: 24310019
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Environmental dynamic analysis
• Research Institution: Kyushu University
• Principal Investigator: OKAZAKI Yusuke 九州大学, 学内共同利用施設等, 准教授 (80426288)
• Co-Investigator(Kenkyū-buntansha): TAKAHASHI Kozo 北星学園大学, 社会福祉学部, 教授 (30244875) ; SEKI Osamu 北海道大学, 低温科学研究所, 准教授 (30374648) ; SAKAMOTO Tatsuhiko 三重大学, 生物資源学研究科, 教授 (90271709) ; IKEHARA Minoru 高知大学, 自然科学系, 准教授 (90335919)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 新生代後期 / 太平洋 / 海洋ゲートウェイ / データ‐モデル統合

Outline of Final Research Achievements

Late Neogene paleoceanographic changes in the North Pacific were reconstructed using drilling sediments to understand the role of the Panama and Bering gateways in the late Neogene climate changes. We found major cooling event at ~2 Ma in the subarctic Pacific based on alkenone SST and siliceous microfossils. And we suggest a reorganization of ocean circulation during late Miocene based on carbon isotopic compositions of epibenthic foraminifera. We published 11 papers and submitted a drilling proposal to IODP based on this study.

Free Research Field

古海洋学