Assessment for responses of submarine fan development and of its CO_2 storage capacity to rapid climate changes

2011 Fiscal Year Final Research Report

• Project/Area Number: 21540488
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Stratigraphy/Paleontology
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: NAKAJIMA Takeshi 独立行政法人産業技術総合研究所, 地圏資源環境研究部門, 主任研究員 (20357627)
• Project Period (FY): 2009 – 2011
• Keywords: 古環境

Research Abstract

Analysis of sediment cores from the Toyama Deep-Sea Channel in the Japan Sea and from a submarine fan in the Nanakai Trough revealed that submarine fan development was controlled by climate changes in the time scale of ten to hundred thousands years whereas it was controlled by tectonics in the longer time scale of million years. It was also clarified that submarine fan development was associated with transportation of abundant organic carbon derived from terrestrial plants into sea floors, thereby stored atmospheric CO_2 in the submarine fan. This study clarified the hypothesis that submarine fan development acted as a buffer for global warming if rapid warming took place. Rapid warming would result in increase in precipitation, which in turn, leads to submarine fan development, thereby increase capacity for CO_2 storage.

Research Products

• [Journal Article] Climatic control on turbidite deposition during the last 70kyr along the Toyama Deep-Sea Channel (2009)
  • Author(s): Takeshi Nakajima, Hajime Katayama, Takuya Itaki
  • Journal Title: Central Japan Sea, SEPM Special Publication Volume: No.92 Pages: 159-177
  • Peer Reviewed
• [Presentation] Tectonic and climatic evolution of Southwest Japan inferred from sediment composition and FT ages of Sites C0011 and C0012 (2011)
  • Author(s): Takeshi Nakajima, Hajime Naruse, Hirokuni Oda, Tohru Danhara, Akiko Obuse, Minoru Ikehara, Saneatsu Saito, Yusuke Kubo
  • Organizer: Exp. 322, NanTroSEIZE Stage2-2nd Post Cruise Meeting
  • Place of Presentation: CSIC, Barcelona, Spain
  • Year and Date: 2011-09-26
• [Presentation] Quantitative analysis of the geometry of submarine levees, Internal Architecture, Bedforms and Geometry of Turbidite Channels (2011)
  • Author(s): Takeshi Nakajima, Ben Kneller
  • Organizer: Geological Society of London
  • Place of Presentation: Geological Society, London, UK.
  • Year and Date: 2011-06-21
• [Presentation] Outer-bank bars : a new internal architecture within sinuous submarine channels (2011)
  • Author(s): Takeshi Nakajima, Jeff Peakall, William D. McCaffrey, Douglas Paton, Philip J. Thompson
  • Organizer: Internal Architecture, Bedforms and Geometry of Turbidite Channels, Geological Society of London
  • Place of Presentation: Geological Society, London, UK.
  • Year and Date: 2011-06-21
• [Presentation] ODP第322次研究航海四国海盆掘削試料の堆積物組成分析とFT年代測定結果から推定される西南日本の発達史と気候変動史 (2011)
  • Author(s): 中嶋健,成瀬元,小田啓邦,檀原徹,小布施明子,池原実,斉藤実篤,久保雄介
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉県,幕張国際会議場
  • Year and Date: 2011-05-23
• [Presentation] 気候変動に規制された過去7万年間の富山深海長谷のタービダイトの堆積変動史 (2010)
  • Author(s): 中嶋健,片山肇,板木拓也
  • Organizer: 日本地質学会
  • Place of Presentation: 富山県,富山大学
  • Year and Date: 2010-09-20
• [Remarks]
  • URL: http://www.aist.go.jp/RESEARCHERDB/cgi-bin/namae_kensaku.cgi