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The impact of wave loads and pore-water pressure generation on initiation of sediment transport

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Abstract

The build-up of pore-water pressure by waves can lead to sediment liquefaction and subsequent transport by traction currents. This process was investigated by measuring pore-water pressures both in a field experiment and laboratory wave tank tests. Liquefaction was observed in the wave tank tests. The results suggest that sand is less susceptible than silts to wave-induced liquefaction because of the tendency to partially dissipate pore-water pressures. However, previous studies have determined that pore-water pressures must approach liquefaction before current velocities necessary to initiate transport are reduced. Once liquefaction has occurred more sediment can be transported.

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Authors and Affiliations

  1. McClelland Engineers, Inc., 93003, Ventura, CA

    Edward C. Clukey

  2. Cornell University, 14853, Ithaca, NY

    Fred H. Kulhawy & Philip L. -F. Liu

  3. U.S. Geological Survey, 94025, Menlo Park, CA

    George B. Tate

Authors
  1. Edward C. Clukey
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  2. Fred H. Kulhawy
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  3. Philip L. -F. Liu
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  4. George B. Tate
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Clukey, E.C., Kulhawy, F.H., Liu, P.L.F. et al. The impact of wave loads and pore-water pressure generation on initiation of sediment transport. Geo-Marine Letters 5, 177–183 (1985). https://doi.org/10.1007/BF02281636

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  • DOI: https://doi.org/10.1007/BF02281636

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