Origin of Morphodynamic Stability of Intertidal Sand Bars

• SASSA Shinji

  (独法) 港湾空港技術研究所地盤・構造部

• WATABE Yoichi

  (独法) 港湾空港技術研究所地盤・構造部土質研究

Bibliographic Information

Other Title

• 干潟バー地形の動的安定機構の解明

Abstract

The persistent nature of intertidal sand bars has been the subject of much speculation concerning the hydrodynamic mechanisms involved, but its origin remains enigma. Here, we aim to resolve this question by introducing salient geophysics to the analysis of intertidal sediments, in contrast to the physics of fluids above the sediments. The geophysical evidence combined with theoretical modeling and analysis demonstrates that the feedback between the effects of suction dynamics and sediment transport and morphology plays a crucial role in the intertidal bar morphodynamics, yielding the persistent nature of the intertidal sand bars. Our finding may fundamentally alter the current perspective, leading to a new level of understanding, of sediment transport and bar behavior at waterfronts that are ubiquitous in rivers, estuaries, and coastal seas.

Journal

• PROCEEDINGS OF COASTAL ENGINEERING, JSCE

  PROCEEDINGS OF COASTAL ENGINEERING, JSCE 55 1176-1180, 2008

  Japan Society of Civil Engineers

Keywords

• General Chemical Engineering

Details

• CRID: 1390282679527687936
• NII Article ID: 130003992154
• DOI: 10.2208/proce1989.55.1176
• ISSN: 18848222
• ISSN: 09167897
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed