The relationship between global warming/cooling and shallow marine environments in the Sea of Japan during the Pliocene
Project/Area Number |
22540476
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Stratigraphy/Paleontology
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Research Institution | Shimane University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
HAYASHI Hiroki 島根大学, 総合理工学研究科, 准教授 (80399360)
石田 桂 信州大学, 理学部, 准教授 (80402098)
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Research Collaborator |
IWATANI Hokuto The University of Hong Kong, Department of Earth Sciences、Swire Institute of Marine Science, Postdoctoral Fellow
GOTO Takashi 島根大学, 総合理工学研究科, 博士
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Project Period (FY) |
2010 – 2012
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Project Status |
Completed (Fiscal Year 2012)
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Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
Keywords | 貝形虫 / 浮遊性有孔虫 / 鮮新世 / 微量元素分析 / 日本海 / 海水準変動 / 古水温 / 鮮新統 / 貝形虫化石 / 環境変動 / 層位・古生物学 / 地質学 |
Research Abstract |
Fossil ostracode and planktonic foraminiferal faunal analyses and trace element analysis of ostracode valves were conducted to reconstruct paleoenvironments such as timing of inflow of warm-water current, relative sea-level changes, and paleotemperature, in the Sea of Japan during the Pliocene. As a result, the inflow of the warm-water current to the Sea of Japan started at 3.66-ca. 3.4 Ma and it occurred frequently afterwards. Sea-level lowering possibly caused by the global cooling at MIS M2 was found and the decrease in water depth was estimated at 50 m at most. On the basis of Mg/Ca ratio of ostracode valves, paleotemperature in the intermediate water mass off Niigata was probably ca. 5 °C higher than now.
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Report
(4 results)
Research Products
(34 results)
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[Presentation] Fossil ostracode faunas from the middle Pliocene Mita Formation, central Japan, with relation to warm inflow into the Sea of Japan.2012
Author(s)
Irizuki, T., Goto, T., Nasuno, S., Hayashi, H., Ohira, H
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific:Perspective from Earth Drilling Sciences
Place of Presentation
高知大学.(高知)
Year and Date
2012-11-19
Related Report
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[Presentation] The Plio-Pleistocene boundary cooling event recorded on the Ananai Formation, Kochi, southwest Japan.2012
Author(s)
Iwatani, H., Irizuki, T., Iwai, M., Kondo, Y., Ikehara, M
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific:Perspective from Earth Drilling Sciences
Place of Presentation
高知大学.(高知)
Year and Date
2012-11-19
Related Report
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[Presentation] Paleoceanographic change based on analyses of microfossils from the Pliocene Kuwae Formation, Niigata Prefecture, central Japan.2012
Author(s)
Goto, T., Irizuki, T., Hayashi, H., Ishida, K., Yanagisawa, Y
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific: Perspective from Earth Drilling Sciences
Place of Presentation
高知大学.(高知)
Year and Date
2012-11-19
Related Report
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[Presentation] Fossil ostracodes of continental shelf cores at IODP Site U1354 (Expedition 317)2010
Author(s)
Kusunoki, S., Ohi, T., Kawagata, S., Ishida, K., IODP Expedition 317 Shipboard Scientists
Organizer
2010 Fall Meeting, AGU
Place of Presentation
サンフランシスコ,USA
Year and Date
2010-12-13
Related Report
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[Presentation] Fossil ostracode faunas from the middle Pliocene Mita Formation, central Japan, with relation to warm inflow into the Sea of Japan
Author(s)
Irizuki, T., Goto, T., Nasuno, S., Hayashi, H., Ohira, H.
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific: Perspective from Earth Drilling Sciences
Place of Presentation
高知大学( 高知市)
Related Report
-
[Presentation] The Plio-Pleistocene boundary cooling event recorded on the Ananai Formation, Kochi, southwest Japan
Author(s)
Iwatani, H., Irizuki, T., Iwai, M., Kondo, Y., Ikehara, M.
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific: Perspective from Earth Drilling Sciences
Place of Presentation
高知大学( 高知市)
Related Report
-
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[Presentation] Paleoceanographic change based on analyses of microfossils from the Pliocene Kuwae Formation, Niigata Prefecture, central Japan
Author(s)
Goto, T., Irizuki, T., Hayashi, H., Ishida, K., Yanagisawa, Y.
Organizer
Internal Symposium on Paleoceanography in the Southern Ocean and NW Pacific: Perspective from Earth Drilling Sciences
Place of Presentation
高知大学( 高知市)
Related Report
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