Stability of the East Asian climate during the past warm periods

• Project/Area Number: 19710026
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Environmental dynamic analysis
• Research Institution: Japan Agency for Marine-Earth Science and Technology
• Principal Investigator: NAGASHIMA Kana Japan Agency for Marine-Earth Science and Technology, 地球環境変動領域, 研究員 (90426289)
• Project Period (FY): 2007 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥3,150,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥450,000); Fiscal Year 2010: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000); Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2008: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: 気候変動 / 地球温暖化 / アジアモンスーン / 古気候 / 古海洋 / 偏西風 / ESR

Research Abstract

Reconstructed provenances of eolian dust in Japan Sea sediments exhibit millennial-scale variations during MIS 1 and 5, which we interpret to reflect changes in the timing of the seasonal northward movement of the westerly jet axis. The westerly jet changes probably cause millennial-scale changes for the latitudinal distribution of the East Asian Summer Monsoon precipitation. The coupled changes represent climate instability in East Asia during past warm periods.

Research Products

• [Journal Article] Millennial-scale oscillations of the westerly jet path during the last glacial period. (2011)
  • Author(s): Kana Nagashima, Ryuji Tada, Atsushi Tani, Youbin Sun, Yuko Isozaki, Shin Toyoda, Hitoshi Hasegawa.
  • Journal Title: Journal of Asian Earth Sciences. Vol.40 Pages: 1214-1220
  • Peer Reviewed
• [Journal Article] Millennial-scale oscillations of the westerly jet path during the last glacial period (2011)
  • Author(s): Kana Nagashima
  • Journal Title: Journal of Asian Earth Sciences Volume: 40 Pages: 1214-1220
  • Peer Reviewed
• [Journal Article] Provenance study of the Asian dust based on crystallinity and electron spin resonance signal intensity of quartz. (2010)
  • Author(s): Kana Nagashima, Ryuji Tada, Shin Toyoda.
  • Journal Title: Proceedings of the Eleventh Workshop on Environmental Radioactivity Vo.11 Pages: 10-18
  • Peer Reviewed
• [Journal Article] Provenance study of the Asian dust based on crystallinity and electron spin resonance signal intensity of quartz (2010)
  • Author(s): Kana Nagashima
  • Journal Title: Proceedings of the Eleventh Workshop on Environmental Radioactivity Volume: 11 Pages: 10-18
  • Peer Reviewed
• [Journal Article] Provenancestudy of eolian dust using electron spinresonance signal intensity of quartz (2009)
  • Author(s): Nagashima, K., R. Tada, A. Tani, Y.Sun, Y. Isozaki, S. Toyoda
  • Journal Title: SOLAS NEWS,33
• [Journal Article] 海と地球の女性研究者 (2009)
  • Author(s): 長島佳菜
  • Journal Title: ,技術と経済((社)科学技術と経済の会発行) 19
• [Presentation] Abrupt changes of the Asian dust flux and provenance recorded in ocean and lake sediments around Japan. (2010)
  • Author(s): Kana Nagashima
  • Organizer: PMIP3 workshop
  • Place of Presentation: Kyoto Garden Palace Hotel, Japan
  • Year and Date: 2010-12-09
• [Presentation] Abrupt changes of the Asian dust flux and provenance recorded in ocean and lake sediments around Japan (2010)
  • Author(s): Kana Nagashima
  • Organizer: PMIP3 (The Paleoclimate Modelling Intercomparis on Project, Phase 3) workshop
  • Place of Presentation: Kyoto Garden Palace Hotel, Kyoto, Japan
  • Year and Date: 2010-12-09
• [Presentation] Provenance study of Asian dust based on cathodoluminescence analysis of single quartz grain (2010)
  • Author(s): Kana Nagashima
  • Organizer: 地球惑星科学関連学会2010年連合大会
  • Place of Presentation: 幕張メッセ、千葉、日本
  • Year and Date: 2010-05-26
• [Presentation] Millennial-scale oscillations in westerly jet path and their linkage with East Asian monsoon. (2010)
  • Author(s): Kana Nagashima
  • Organizer: 2010 Kochi International Workshop on Paleo, Rock and Environmental Magnetism - Asian Monsoon and Global Climate Change
  • Place of Presentation: Kochi University, Japan
  • Year and Date: 2010-02-04
• [Presentation] Millennial-scaleoscillations in westerly jet path and theirlinkage with East Asian monsoon, KochiInternational Workshop on Paleo (2010)
  • Author(s): Nagashima K., et al.
  • Organizer: Rock andEnvironmental Magnetism - Asian Monsoonand Global Climate Change 2010
  • Place of Presentation: Univ of Kochi, Kochi,Japan .(invited)
  • Year and Date: 2010-02-04
• [Presentation] Millennial-scale oscillations in westerly jet path and their linkage with East Asian monsoon. (2010)
  • Author(s): Kana Nagashima
  • Organizer: 2010 Kochi International Workahop on Paleo, Rock and Environmental Magnetism - Asian Monsoon and Global Climate Change
  • Place of Presentation: Kochi University, Kochi, Japan
  • Year and Date: 2010-02-04
• [Presentation] 石英のESR信号強度を利用した,日本海に堆積する風送塵の起源推定 (2009)
  • Author(s): 長島佳菜
  • Organizer: 第四回高崎量子応用研究シンポジウム
  • Place of Presentation: 高崎シティギャラリー,高崎,日本
  • Year and Date: 2009-10-09
• [Presentation] ひと粒でわかる?石英の供給源推定CL, ESR分析より (2009)
  • Author(s): 長島佳菜
  • Organizer: 日本地球化学会第56回年会
  • Place of Presentation: 広島大学,広島,日本
  • Year and Date: 2009-09-15
• [Presentation] Millennial-scale oscillations in westerly jet path and theirlinkage with East Asian monsoon (2009)
  • Author(s): Kana Nagashima
  • Organizer: PAGES 3rd Open Science Meeting
  • Place of Presentation: Oregon State University, USA
  • Year and Date: 2009-07-10
• [Presentation] Millennial-scale oscillations in westerly jet path and their linkage with East Asian monsoon. (2009)
  • Author(s): Kana Nagashima
  • Organizer: PAGES 3rd Open Science Meeting
  • Place of Presentation: Oregon State University, Corvallis, USA
  • Year and Date: 2009-07-10
• [Presentation] R, Millennialscaleoscillations in westerly jet path andtheir linkage with East Asian monsoon (2009)
  • Author(s): Nagashima K., et al.
  • Organizer: PAGES 3rd Open Science Meeting
  • Place of Presentation: Corvallis, USA.
  • Year and Date: 2009-07-09
• [Presentation] 最終氷期以降の偏西風ジェットの変動とアジア夏季モンスーンとの関係 (2009)
  • Author(s): 長島 佳菜
  • Organizer: Blue Earth'09シンポジウム
  • Place of Presentation: 立教大学, 東京
  • Year and Date: 2009-03-13
• [Presentation] 風成塵の電子スピン共鳴(ESR)信号から復元するLGM以降のアジアモンスーン・偏西風の変動と海洋への伝播 (2009)
  • Author(s): 長島 佳菜
  • Organizer: 古海洋シンポジウム
  • Place of Presentation: 東京大学海洋研究所, 東京
  • Year and Date: 2009-01-08
• [Presentation] Westerly jet-Asian Monsoon coupling during the last 30 kyr. (2008)
  • Author(s): Kana Nagashima
  • Organizer: 2008 American Geophysical Union Fall Meeting
  • Place of Presentation: The Moscone Center, San Francisco, USA
  • Year and Date: 2008-12-16
• [Presentation] Westerly jet-Asian Monsoon coupling during the last 30kyr (2008)
  • Author(s): Nagashima K., et al.
  • Organizer: 2008 American Geophysical Union FallMeeting
  • Place of Presentation: The MosconeCenter, San Francisco, USA.
  • Year and Date: 2008-12-16
• [Presentation] WesterlyJet-Asian Monsoon Coupling during the LastDeglaciation and Holocene (2008)
  • Author(s): Nagashima, K., et al.
  • Organizer: 6th InternationalConference on Asian MarineGeology
  • Place of Presentation: Kochi Univ. ofTechnology, Kochi, JAPAN.
  • Year and Date: 2008-08-30
• [Presentation] Westerly Jet-Asian Monsoon Coupling during the Last Deglaciation and Holocene. (2008)
  • Author(s): Kana Nagashima
  • Organizer: 6^<th> International Conference on Asian Marine Geology
  • Place of Presentation: University dormitory of the Kochi University of Technology, Kochi, JPN
  • Year and Date: 2008-08-30
• [Presentation] Coupled variations in Asian winter monsoon and westerly jet during the last 60 kyr recorded in the south-central Japan Sea sediments. (2007)
  • Author(s): Kana Nagashima
  • Organizer: 9^<th> International Conference on Paleoceanography
  • Place of Presentation: Shanghai, China
  • Year and Date: 2007-09-04
• [Presentation] Coupledvariations in Asian winter monsoon andwesterly jet during the last 60 kyrrecorded in the south-central Japan Seasediments (2007)
  • Author(s): Nagashima, K., et al.
  • Organizer: 9th International Conference onPaleoceanography
  • Place of Presentation: Everbright Convention & Exhibition CentreInternational Hotel, Shanghai, China
  • Year and Date: 2007-09-04
• [Presentation] Coupled variations in Asian winter monsoon and westerly jet during the last 60 kyr recorded in the south-central Japan Sea sediments (2007)
  • Author(s): Nagashima Kana
  • Organizer: 9th International Conference on Paleoceanography
  • Place of Presentation: Shanghai/China
  • Year and Date: 2007-09-04
• [Remarks] ホームページ等
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