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Does the geomagnetic excursion trigger climate change?

Research Project

Project/Area Number 15K21497
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Geology
Stratigraphy/Paleontology
Research InstitutionRitsumeikan University

Principal Investigator

KITABA Ikuko  立命館大学, 総合科学技術研究機構, 准教授 (60631710)

Research Collaborator MARK Darren  グラスゴー大学, 教授
SMITH Victoria  オックスフォード大学, 准教授
ALBERT Paul G.  オックスフォード大学, 研究員
NAKAGAWA Takeshi  立命館大学, 総合科学技術研究機構, 教授
HYODO Masayuki  神戸大学, 内海域環境教育研究センター, 教授
WATANABE Masami  文化財調査コンサルタント株式会社, 代表取締役
Project Period (FY) 2015-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords気候変動 / 地磁気エクスカーション / モンスーン / 銀河宇宙線 / スベンスマルク効果 / 年縞堆積物 / 水月湖 / 定量的気候復元
Outline of Final Research Achievements

This research aimed to reveal the climatic impact of moderate weakening of the geomagnetic field. We carried out pollen analysis of the SG14 sediment core from Lake Suigetsu, Japan, and reconstructed the climate during the last interglacial period (MIS 5), which contains the Blake excursion. The temperature signal in MIS 5 was dominated by ca. 20-kyr oscillation, which gradually damped through cycles. This means that the long-term climate change was primarily controlled by the orbital forcing. When we removed the component which arose from the boreal summer insolation, the residual component in temperature was positively correlated with the paleomagnetic intensity measured in the same core between 110 ka and 130 ka. On the other hand, there was no clear correlation between paleointensity and monsoon signals.

Report

(4 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Research-status Report
  • 2015 Research-status Report
  • Research Products

    (17 results)

All 2018 2017 2016 2015 Other

All Int'l Joint Research (3 results) Journal Article (9 results) (of which Int'l Joint Research: 5 results,  Peer Reviewed: 9 results,  Open Access: 8 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Int'l Joint Research: 4 results,  Invited: 2 results) Book (1 results)

  • [Int'l Joint Research] University of Glasgow/University of Oxford(英国)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] University of Glasgow/University of Oxford(英国)

    • Related Report
      2016 Research-status Report
  • [Int'l Joint Research] University of Glasgow/University of Oxford(英国)

    • Related Report
      2015 Research-status Report
  • [Journal Article] Integrating the Holocene tephrostratigraphy for East Asia using a high-resolution cryptotephra study from Lake Suigetsu (SG14 core), central Japan2018

    • Author(s)
      McLean, D., Albert, P., Nakagawa, T., Suzuki, T., Staff, R., Yamada, K., Kitaba, I., Haraguchi, T., Kitagawa, J., SG14 Project Members and Smith, V.
    • Journal Title

      Quaternary Science Reviews

      Volume: 183 Pages: 36-58

    • DOI

      10.1016/j.quascirev.2017.12.013

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Black ceramic spheres as marker grains for microfossil analyses, with improved chemical, physical, and optical properties2017

    • Author(s)
      Kitaba Ikuko、Nakagawa Takeshi
    • Journal Title

      Quaternary International

      Volume: 455 Pages: 166-169

    • DOI

      10.1016/j.quaint.2017.08.052

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] High-resolution diatom record of paleoceanographic variations across the Early?Middle Pleistocene boundary in the Chiba Section, central Japan2017

    • Author(s)
      Tanaka Ikuko、Hyodo Masayuki、Ueno Yusuke、Kitaba Ikuko、Sato Hiroshi
    • Journal Title

      Quaternary International

      Volume: 455 Pages: 141-148

    • DOI

      10.1016/j.quaint.2017.08.017

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Millennial-scale northern Hemisphere Atlantic-Pacific climate teleconnections in the earliest Middle Pleistocene2017

    • Author(s)
      Hyodo Masayuki、Bradak Balazs、Okada Makoto、Katoh Shigehiro、Kitaba Ikuko、Dettman David L.、Hayashi Hiroki、Kumazawa Koyo、Hirose Kotaro、Kazaoka Osamu、Shikoku Kizuku、Kitamura Akihisa
    • Journal Title

      Scientific Reports

      Volume: 7 Issue: 1 Pages: 10036-10036

    • DOI

      10.1038/s41598-017-10552-2

    • NAID

      120006352251

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Geological support for the Umbrella Effect as a link between geomagnetic field and climate2017

    • Author(s)
      Kitaba I., Hyodo M., Nakagawa T., Katoh S., Dettman D.L., Sato H.
    • Journal Title

      Scientific Reports

      Volume: Vol. 7 Issue: 1 Pages: 40682-40682

    • DOI

      10.1038/srep40682

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Brief sea-level fall event and centennial to millennial sea-level variations during Marine Isotope Stage 19 in Osaka Bay2016

    • Author(s)
      k. Maegakiuchi, M. Hyodo, I. Kitaba, K. Hirose, S. Katoh, H. Sato
    • Journal Title

      J. Quaternary Science

      Volume: 31 Issue: 7 Pages: 809-822

    • DOI

      10.1002/jqs.2907

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Understanding the human impact on Akita-sugi cedar (Cryptomeria japonica) forest in the late Holocene through pollen analysis of annually laminated sediments from Ichi-no-Megata,2016

    • Author(s)
      Junko Kitagawa, Yoshimune Morita, Miroslaw Makohonienko, Katsuya Gotanda, Kazuyoshi Yamada, Hitoshi Yonenobu, Ikuko Kitaba, Yoshinori Yasuda
    • Journal Title

      Vegetation History and Archaeobotany

      Volume: - Issue: 6 Pages: 1-16

    • DOI

      10.1007/s00334-016-0570-2

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] High-resolution stratigraphy across the early middle Pleistocene boundary from a core of the Kokumoto Formation at Tabuchi, Chiba Prefecture Japan2016

    • Author(s)
      Hyodo, M., Kato, S., Kitamura, A., Takasaki, K., Matsubara, H., Kitaba, I., Tanaka, I., Nara, M., Matsuzaki, T., Dettman, D.L., Okada, M.
    • Journal Title

      Quaternary International

      Volume: 397 Pages: 16-26

    • DOI

      10.1016/j.quaint.2015.03.031

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Timing of the Matuyama–Brunhes geomagnetic reversal: Decoupled thermal maximum and sea-level highstand during Marine Isotope Stage 192015

    • Author(s)
      Masayuki Hyodo, Ikuko Kitaba.
    • Journal Title

      Quaternary International

      Volume: 01 Pages: 052-052

    • DOI

      10.1016/j.quaint.2015.01.052

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Selective cooling on land supports cloud formation by cosmic ray during geomagnetic reversals2017

    • Author(s)
      Ikuko Kitaba, Masayuki Hyodo, Takeshi Nakagawa, Shigehiro Katoh, David L. Dettman, Hiroshi Sato
    • Organizer
      2017 AGU Fall Meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Cosmic rays' impact on climate is likely caused by cloud formation mechanisms2017

    • Author(s)
      Ikuko Kitaba, Masayuki Hyodo, Takeshi Nakagawa, Shigehiro Katoh, David L. Dettman, Hiroshi Sato
    • Organizer
      JpGU-AGU Joint Meeting 2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Footprints of the Sun Left in a Tropical Lake2016

    • Author(s)
      Ikuko Kitaba
    • Organizer
      Japanese-American Frontiers of Science (JAFoS) Symposium 2016
    • Place of Presentation
      Arnold and Mabel Beckman Center (Irvine, USA)
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Spatio-temporal structure of deglacial climate change: climate changes reconstructed from varved sediments of Lake Ichi-no-megata, Northern Japan, and its correlation with global references2015

    • Author(s)
      Ikuko Kitaba, Richard A. Staff, Yoshitsugu Shinozuka, Kazuyoshi Yamada, Katsuya Gotanda, Junko Kitagawa, Tsuyoshi Haraguchi, Takeshi Nakagawa, Hitoshi Yonenobu
    • Organizer
      XIX INQUA Congress 2011
    • Place of Presentation
      名古屋国際会議場(愛知県名古屋市)
    • Year and Date
      2015-07-29
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Book] パリティ 2017年8月号2017

    • Author(s)
      北場育子
    • Total Pages
      5
    • Publisher
      丸善出版株式会社
    • Related Report
      2017 Annual Research Report

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Published: 2015-04-16   Modified: 2022-06-16  

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