An experimental study of self-organization of three-dimensional wave ripples under complex oscillatory flow

• Project/Area Number: 19740309
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Geology
• Research Institution: University of Tsukuba
• Principal Investigator: SEKIGUCHI Tomohiro University of Tsukuba, 大学院・生命環境研究科, 講師 (90400647)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥3,600,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥300,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2007: ¥2,300,000 (Direct Cost: ¥2,300,000)
• Keywords: 地層 / 浅海環境 / 水理実験 / ベッドフォーム / 自己組織化 / ladder-back ripple / interference ripple / 自己組鐡化 / ベットフォーム / ベツドフォーム

Research Abstract

Three-dimensional wave ripples were examined through laboratory experiments using two-directional oscillatory bed, which was newly developed in this study. The experiments showed that ripple formation processes and their formative conditions under steady two-dimensional oscillatory flow and those under unsteady one-dimensional oscillatory flow.

Research Products

• [Journal Article] ウェーブリップルの遷移過程. (2010)
  • Author(s): 関口智寛
  • Journal Title: 地質学雑誌特集号 (受理済)
  • NAID: 130000758394
  • Peer Reviewed
• [Journal Article] Transient 3D-patterned ripples appear during deformation of a 2D ripple field under wave-induced oscillatory flow. (2009)
  • Author(s): Sekiguchi, T.
  • Journal Title: Earth Surface Processes and Landforms 34 Pages: 839-847
  • Peer Reviewed
• [Journal Article] 二方向振動板装置の開発. (2008)
  • Author(s): 関口智寛
  • Journal Title: 筑波大学陸域環境研究センター報告 9 Pages: 25-28
  • NAID: 120006335937
  • Peer Reviewed
• [Journal Article] 二方向振動板装置の開発 (2008)
  • Author(s): 関口智寛
  • Journal Title: 筑波大学陸域環境研究センター報告 9 Pages: 25-28
  • NAID: 120006335937
  • Peer Reviewed
• [Presentation] 二方向振動板実験に基づくladder-back rippleの形成条件. (2010)
  • Author(s): 関口智寛
  • Organizer: 日本堆積学会
  • Place of Presentation: 茨城大学
  • Year and Date: 2010-03-27
• [Presentation] 二方向振動板実験に基づく ladder-back ripple の形成条件 (2010)
  • Author(s): 関口智寛
  • Organizer: 日本堆積学会
  • Place of Presentation: 茨城大学
  • Year and Date: 2010-03-27
• [Presentation] 三次元リップルに関する二方向振動板実験. (2010)
  • Author(s): 関口智寛
  • Organizer: 筑波大学陸域環境研究センター年次報告会
  • Place of Presentation: 筑波大学
  • Year and Date: 2010-03-08
• [Presentation] 三次元リップルに関する二方向振動板実験 (2010)
  • Author(s): 関口智寛
  • Organizer: 筑波大学陸域環境研究センター年次報告会
  • Place of Presentation: 筑波大学
  • Year and Date: 2010-03-08
• [Presentation] 海底に見られる規則的微地形の不思議～ウェーブリップルマークの多様性とその要因. (2010)
  • Author(s): 関口智寛
  • Organizer: 信州大学数理科学談話会
  • Place of Presentation: 信州大学
  • Year and Date: 2010-02-22
• [Presentation] 三次元リップルに関する二方向振動板実験. (2009)
  • Author(s): 関口智寛
  • Organizer: 日本地形学連合
  • Place of Presentation: 京都教育大学
  • Year and Date: 2009-10-04
• [Presentation] 三次元リップルに関する二方向振動板実験 (2009)
  • Author(s): 関口智寛
  • Organizer: 日本地形学連合
  • Place of Presentation: 京都教育大学
  • Year and Date: 2009-10-04
• [Presentation] 複雑な振動流下のベッドフォーム:二方向振動板実験による予察的報告. (2009)
  • Author(s): 関口智寛
  • Organizer: 筑波大学陸域環境研究センター年次報告会
  • Place of Presentation: 筑波大学
  • Year and Date: 2009-03-03
• [Presentation] Effect of wave period on combined-flow bedforms: a flume experiment. (2008)
  • Author(s): T. Sekiguchi, M. Yokokawa
  • Organizer: Marine Sandwave and River Dune Dynamics III
  • Place of Presentation: Leeds大学, イギリス
  • Year and Date: 2008-04-01
• [Presentation] Effect of wave period on combined-flow bedforms : a flume experiment (2008)
  • Author(s): T. Sekiguchi
  • Organizer: Marine Sandwave and River Dune Dynamics III
  • Place of Presentation: University of Leeds
  • Year and Date: 2008-04-01
• [Presentation] 複合流ペットフオームに関する一実験 (2007)
  • Author(s): 関ロ智寛・横川美和
  • Organizer: 日本地形学連合2007年秋季大会
  • Place of Presentation: 筑波大学
  • Year and Date: 2007-11-10