Elucidation of sedimentological mechanism of gravity flows by tsunamis

• Project/Area Number: 23310118
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Natural disaster science
• Research Institution: Tohoku University
• Principal Investigator: MINOURA Koji 東北大学, 理学(系)研究科(研究院), 教授 (10133852)
• Co-Investigator(Kenkyū-buntansha): IMAMURA Fumihiko 東北大学, 災害科学国際研究所, 教授 (40213243)
• Project Period (FY): 2011-04-01 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥20,410,000 (Direct Cost: ¥15,700,000、Indirect Cost: ¥4,710,000); Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2012: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2011: ¥14,690,000 (Direct Cost: ¥11,300,000、Indirect Cost: ¥3,390,000)
• Keywords: 津波 / 押し波 / 引き波 / 重力流 / 密度流 / 溯上流 / 戻り流れ / 堆積作用 / 海底地滑り

Research Abstract

Sedimentological and micropaleontological analyses of terrestrial and nearshore to offshore sediments recovered from the coast of the Sendai Bay were performed to clarify the processes of sediment transport and deposition by the tsunami retreat. The distribution pattern of sediment grains and diatom frustules showed seaward migration after the tsunami event. It has been suggested that sediments originally distributed in terrestrial and coastal zones were transported offshore due to the tsunami backwash. The distribution pattern of planktonic and benthic species living in offshore zones showed slight evidence of landward migration by the tsunami. This suggests that landward redistribution of sediments by the tsunami run-up did not occur in the offshore seafloor of the study area. It is possible that tsunami backwashes induce sediment flows that transport a large amount of coastal materials seaward.

Research Products

• [Journal Article] 2011津波による侵蝕・運搬・堆積 (2014)
  • Author(s): 箕浦幸治
  • Journal Title: ペドロジスト Volume: vol. 58(印刷中)
  • URL: http://pedology.ac.affrc.go.jp/
  • Peer Reviewed
• [Journal Article] Hydrodynamics of impact-induced tsunami over the Martian ocean (2014)
  • Author(s): Iijima, Y., Goto, K., Minoura, K., Komatsu, G., Imamura, F.
  • Journal Title: Planetary and Space Science Volume: 95 Pages: 1-12
  • Peer Reviewed
• [Journal Article] Identification and possible recurrence of an oversized tsunami on the Pacific coast of northern Japan (2013)
  • Author(s): Minoura, K., Hirano, S., and Yamada, T.
  • Journal Title: Natural Hazards Volume: vol. 68 Issue: 2 Pages: 631-643
  • DOI: 10.1007/s11069-013-0640-z
  • Peer Reviewed
• [Journal Article] 古地震の復元 (2013)
  • Author(s): 箕浦幸治
  • Journal Title: 応用地質 Volume: vol. 53 Pages: 313-319
  • NAID: 10031139064
  • URL: http://www.jseg.or.jp/03-publication/magazine.html
  • Peer Reviewed
• [Journal Article] Identification and possible recurrence of an oversized tsunami on the Pacific coast of northern Japan. (2013)
  • Author(s): Minoura, K., Hirano, S., and Yamada, T.
  • Journal Title: Nat Hazards Volume: 66 Pages: 1-13
  • Peer Reviewed
• [Journal Article] The 2011 Tohoku-Oki Earthquake Tsunami : Similarities and Differences to the 869 Jogan Tsunami on the Sendai Plain (2012)
  • Author(s): Sugawara, D., Imamura, F., Goto, K., Matsumoto, H., and Minoura, K.
  • Journal Title: Pure Appl. Geophys Volume: 24(印刷中) Issue: 5 Pages: 831-843
  • DOI: 10.1007/s00024-012-0460-1
  • Peer Reviewed
• [Journal Article] Assessing the magnitude of the 869 Jogan tsunami using sedimentary deposits : Prediction and consequence of the 2011 Tohoku-oki tsunami (2012)
  • Author(s): Sugawara, D., Goto, K., Imamura, F., Matsumoto, H., and Minoura, K.
  • Journal Title: Sedimentary Geology Volume: vol. 282 Pages: 14-26
  • DOI: 10.1016/j.sedgeo.2012.08.001
  • Peer Reviewed
• [Journal Article] 射流による人工浜堤の破壊-青森県東岸における東北地方太平洋沖地震による津波の例 (2012)
  • Author(s): 根本直樹, 箕浦幸治
  • Journal Title: 地球科学 Volume: vol. 66 Pages: 209-210
  • URL: http://www.chidanken.jp/ES/chikyu.html
  • Peer Reviewed
• [Journal Article] 2011 年東北地方太平洋沖地震津波の反省に立った津波堆積学の今後のあり方 (2012)
  • Author(s): 後藤和久・箕浦幸治
  • Journal Title: 堆積学研究 Volume: vol. 71 Pages: 105-117
  • NAID: 130004725793
  • URL: http://sediment.jp/05shuppan/j0071-2.html
  • Peer Reviewed
• [Journal Article] Assessing the magnitude of the 869 Jogan tsunami using sedimentary deposits: prediction and consequence of the 2011 Tohoku-oki tsunami (2012)
  • Author(s): Sugawara, D., Imamura, F., Goto, K., Matsumoto, H., and Minoura K.
  • Journal Title: Sedimentary Geology Volume: 282 Pages: 14-26
  • Peer Reviewed
• [Journal Article] Geological evidence of tsunamis and earthquakes at the Eastern Hellenic Arc: correlation with historical seismicity in the eastern Mediterranean Sea. (2012)
  • Author(s): Papadopoulos, G., Minoura, K., Imamura, F., Kuran, U., Yalciner, A., Fokaefs, A., and Takahashi, T.
  • Journal Title: Research in Geophysics Volume: 2 Issue: 2 Pages: 90-99
  • DOI: 10.4081/rg.2012.e12
  • Peer Reviewed
• [Journal Article] Emplacement and movement of boulders by known storm waves - Field evidence from the Okinawa Islands, Japan (2011)
  • Author(s): Goto, K., Miyagi, K., Kawana, T., Takahashi, J., and Imamura, F.
  • Journal Title: Marine Geology Volume: vol. 283 Pages: 66-78
  • Peer Reviewed
• [Journal Article] 津波の水理堆積学的考察 (2011)
  • Author(s): 箕浦幸治
  • Journal Title: 岩波科学 Volume: 81 Pages: 56-61
• [Journal Article] 地質学的データを用いた西暦869年貞観地震津波の復元について (2011)
  • Author(s): 菅原大助・箕浦幸治, ほか
  • Journal Title: 自然災害科学 Volume: 24 Pages: 501-516
  • Peer Reviewed
• [Presentation] 3.11 津波による侵蝕・運搬・堆積 (2013)
  • Author(s): 箕浦幸治
  • Organizer: 日本ペドロジー学会
  • Place of Presentation: 仙台
  • Year and Date: 2013-10-25
• [Presentation] 南相馬市小高地区における津波堆積物調査 (2013)
  • Author(s): 飯嶋耕崇, 箕浦幸治, 平野信一, 山田 努
  • Organizer: 日本地質学会
  • Place of Presentation: 仙台
  • Year and Date: 2013-09-16
• [Presentation] 東北地方太平洋沖地震津波による地形・植生変化と地形条件による影響 (2013)
  • Author(s): 平野信一, 山田努, 箕浦幸治
  • Organizer: 日本地質学会
  • Place of Presentation: 仙台
  • Year and Date: 2013-09-16
• [Presentation] 東北沖地震の津波による堆積物形成の数値シミュレーション (2013)
  • Author(s): 菅原大助, 高橋智幸, 今村文彦
  • Organizer: 日本地球惑星科学連合
  • Place of Presentation: 千葉
  • Year and Date: 2013-05-24
• [Presentation] 古地震の復元 (2012)
  • Author(s): 箕浦幸治
  • Organizer: 日本自然災害学会
  • Place of Presentation: 弘前
  • Year and Date: 2012-06-20
• [Presentation] 3.11 津波災害の教訓-被災から防災へ (2012)
  • Author(s): 箕浦幸治
  • Organizer: 応用地質学会
  • Place of Presentation: 仙台
  • Year and Date: 2012-05-18
• [Presentation] 津波痕跡の化学的検出 (2011)
  • Author(s): 箕浦幸治
  • Organizer: 日本堆積学会2011年大会
  • Place of Presentation: 長崎大学(招待)
  • Year and Date: 2011-12-24
• [Presentation] Great East Japan Earthquake Tsunami (2011)
  • Author(s): Iijima, Y., Minoura, K., Hirano, S., Ymamada, T.
  • Organizer: AGU
  • Place of Presentation: サンフランシスコ,アメリカ
  • Year and Date: 2011-12-10
• [Presentation] Great East Japan Earthquake Tsunami (2011)
  • Author(s): Iijima, Y., Minoura, K., Hirano, S., and Yamada, T.
  • Organizer: American Geophysical Union
  • Place of Presentation: San Francisco,アメリカ
  • Year and Date: 2011-12-05
• [Presentation] 東日本太平洋沖地震津波の溯上と海水氾濫による堆積作用 (2011)
  • Author(s): 箕浦・平野・山田・飯島
  • Organizer: 日本地質学会第118年学術大会
  • Place of Presentation: 茨城大学(招待)
  • Year and Date: 2011-09-10
• [Presentation] Reviewing of neotectonism in NE Japan (2011)
  • Author(s): 箕浦幸治
  • Organizer: 地学団体研究会第65回総会
  • Place of Presentation: 弘前大学(招待)
  • Year and Date: 2011-08-20
• [Presentation] サンゴ礁上の堆積物分布における台風の高波の役割 (2011)
  • Author(s): 池間, 後藤, 箕浦, 宮城, 今村
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 幕張メッセ国際会議場
  • Year and Date: 2011-05-22
• [Presentation] 3.11 津波による侵蝕・運搬・堆積
  • Author(s): 箕浦幸治
  • Organizer: 2013年日本ペドロジー学会公開シンポジウム
  • Place of Presentation: 東北大学さくらホール（宮城県仙台市青葉区）
  • Invited
• [Presentation] Hydraulics of sediment erosion and reworking by surging currents
  • Author(s): Minoura, K.
  • Organizer: 2012年日本地球惑星合同学会
  • Place of Presentation: 幕張メッセ国際会議場
  • Invited
• [Presentation] 3.11津波災害の教訓―被災から防災へ
  • Author(s): 箕浦幸治
  • Organizer: 2012年応用地質学会
  • Place of Presentation: ホテルＫＫＲ仙台
  • Invited
• [Presentation] 古地震の復元
  • Author(s): 箕浦 幸治
  • Organizer: 2012年日本自然災害学会
  • Place of Presentation: 弘前大学
  • Invited
• [Book] 貞観津波と東日本大震災の津波,東日本大震災を分析する 2--震災と人間・まち・記録-- (2013)
  • Author(s): 菅原大助, 今村文彦, 松本秀明, 後藤和久, 箕浦幸治
  • Publisher: 明石書店
• [Book] 津波発生のメカニズム,東日本大震災を分析する 1--地震・津波のメカニズムと被害の実態-- (2013)
  • Author(s): 今村文彦, 越村俊一, 大家隆行, 馬淵幸雄, 村嶋陽一, 村田泰洋
  • Publisher: 明石書店
• [Book] 津波災害史観.吉野博・日野正輝(編)今を生きる--東日本大震災から明日へ,復興と再生への提言-- 5. 自然と科学 (2013)
  • Author(s): 箕浦幸治, 菅原大助
  • Publisher: 東北大学出版会
• [Book] 今を生きる-東日本大震災から明日へ！復興と再生への提言- 5 自然と科学 (2013)
  • Author(s): 箕浦幸治・菅原大助
  • Total Pages: 354
  • Publisher: 東北大学出版会
• [Book] 津波災害史観. 今を生きる, 第5巻「自然と科学」, 吉野博・日野正輝 (編) (2013)
  • Author(s): 箕浦幸治・菅原大助
  • Publisher: 東北大学出版会
• [Book] 津波災害-歴史への衝撃 (2012)
  • Author(s): 箕浦幸治
  • Publisher: 東北大学病理学教室同窓会会報
• [Book] 津波災害―歴史への衝撃 (2012)
  • Author(s): 箕浦幸治
  • Publisher: 東北大学病理学教室同窓会会報
• [Book] 津波の水理堆積学的考察 (2011)
  • Author(s): 箕浦幸治
  • Publisher: 岩波書店
• [Book] 堆積学および変動地形学 (2011)
  • Author(s): 箕浦幸治・池田康隆(共著)
  • Publisher: 共立出版
• [Book] 地球進化論 (2011)
  • Author(s): 平, 阿部, 川上, 清川, 有馬, 田近, 箕浦(共著)
  • Publisher: 岩波書店