A research on ripple transient under unsteady oscillatory flow

• Project/Area Number: 22740329
• 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 筑波大学, 生命環境系, 講師 (90400647)
• Project Period (FY): 2010 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2010: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 地層 / 浅海環境 / 水理実験 / ベッドフォーム / 遷移 / ウェーブリップル / 実験 / オリエンテーション / 非対称振動流 / 二次元振動流 / 自己組織化

Research Abstract

This research focused on ripple transition responding to sudden change in oscillatory-flow conditions, especially its direction. A series of experiment using two-directional oscillatory bed showed some typical transition and their occurrence conditions.

Research Products

• [Journal Article] ウェーブリップルの遷移過程 (2011)
  • Author(s): 関口智寛
  • Journal Title: 地質学雑誌 Volume: 117 Pages: 141-147
  • NAID: 130000758394
  • URL: https://www.jstage.jst.go.jp/article/geosoc/117/3/117_3_141/_pdf
  • Peer Reviewed
• [Journal Article] 浅海域の多角形リップル (2011)
  • Author(s): 関口智寛
  • Journal Title: 地質学雑誌 Volume: 117
  • NAID: 130003363854
  • URL: https://www.jstage.jst.go.jp/A_PRedirectJournalInit/-char/ja/?sryCd=geosoc&noVol=117&noIssue=3&kijiCd=117_117.3.VI&screenID=AF06S010
  • Peer Reviewed
• [Journal Article] Dataset of a Wave-Flume Experiments of the Ripple Deformation (2011)
  • Author(s): Sekiguchi T.
  • Journal Title: Bulletine of the Environmental Research Center the University of Tsukuba Volume: 12 Pages: 41-53
  • NAID: 120006335819
  • URL: http://www.suiri.tsukuba.ac.jp/pdf_papers/tercbull12/t1241.pdf
  • Peer Reviewed
• [Presentation] Patterned threedimensional wave-generated ripples: equilibrium vs (2012)
  • Author(s): Sekiguchi, T
  • Organizer: ephemeral. Experimental Stratigraphy Workshop
  • Place of Presentation: Austin
  • Year and Date: 2012-12-11
• [Presentation] Patterned three-dimensional wave-generated ripples: equilibrium vs. ephemeral (2012)
  • Author(s): Tomohiro SEKIGUCHI
  • Organizer: Experimental Stratigraphy Workshop
  • Place of Presentation: Austin, USA
• [Presentation] Effect of sediment grain size on migration rate of combined-flow bedforn: an analogue experiment (2012)
  • Author(s): Shingo NUMATA
  • Organizer: Experimental Stratigraphy Workshop
  • Place of Presentation: Austin, USA
• [Presentation] 振動流の方向変化によるリップル遷移実験 (2011)
  • Author(s): 関口智寛・新井賢造
  • Organizer: 日本堆積学会2011年大会
  • Place of Presentation: 長崎
  • Year and Date: 2011-12-23
• [Presentation] Ripples under two-dimensional oscillatory flow: a two-directional oscillatory-bed experiment (2011)
  • Author(s): Sekiguchi, T
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: Minneapolis
  • Year and Date: 2011-10-11
• [Presentation] 複雑な振動流下におけるベッドフォーム (2011)
  • Author(s): 関口智寛
  • Organizer: 日本地球惑星科学連合2011年大会
  • Year and Date: 2011-05-24
• [Presentation] 複雑な振動硫化におけるベッドフォーム (2011)
  • Author(s): 関口智寛
  • Organizer: 日本地球惑星科学連合2011年大会
  • Place of Presentation: 千葉
  • Year and Date: 2011-05-24
• [Presentation] RIPPLES UNDER TWO-DIMENSIONAL OSCILLATORY FLOW : A TWO-DIRECTIONAL OSCILLATORY-BED EXPERIMENT (2010)
  • Author(s): T.SEKIGUCHI
  • Organizer: Geological Society of America Annual Meeting
  • Place of Presentation: ミネアポリス
  • Year and Date: 2010-10-11