Experimental Study on Evolution of Surface Profile of Artificial Shallow and Temporal Change in Pore-Water Pressure inside Surface Layer of Shallow

• NAKAMURA Tomoaki

  The University of Nagoya

• NEZASA Yuta

  The University of Nagoya

• MIZUTANI Norimi

  The University of Nagoya

Bibliographic Information

Other Title

• 人工浅場の地形変化過程に与える浅場内部の間隙水圧変動の影響に関する実験的研究

Abstract

The wave-induced evolution of the surface profile of an artificial shallow is investigated experimentally in terms of temporal changes in bottom flow velocity on the surface of the shallow and pore-water pressure inside the surface layer of the shallow. Experimental results show that the relative vertical effective stress ratio is always negatively correlated with the Shields parameter defined as positive landward, and suggest that offshore sediment transport can be accelerated regardless of the profile evolution of the shallow. Moreover, it is found that sediment transport on the shallow can always be assessed reasonably well using a Shields parameter modified to consider pore-water pressure on the surface layer of the shallow, and consequently the consideration of the pore-water pressure is essential to assess the topographic change of the shallow.

Journal

• Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)

  Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 68 (2), I_541-I_545, 2012

  Japan Society of Civil Engineers

Keywords

• sediment transport
• artificial shallow
• topographic change
• pore-water pressure
• hydraulic experiment

Details

• CRID: 1390001205321636352
• NII Article ID: 130004550836
• DOI: 10.2208/kaigan.68.i_541
• ISSN: 18838944
• ISSN: 18842399
• Text Lang: ja
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed