Breaking-Wave Induced Transient Pore Pressure in a Sandy Seabed: Flume Modeling and Observations

Previous studies on wave-induced pore pressure in a porous seabed mainly focused non-breaking regular waves, e.g., Airy linear waves or Stokes non-linear waves. In this study, breaking-wave induced response sandy was physically simulated with large wave flume. The generated by superimposing series of longer onto the foregoing shorter at specified location. Water surface elevations and corresponding process breaking were measured simultaneously three typical locations, i.e., rear, just at, front Based test results, characterization parameters are proposed for pore-pressures. Flume observations indicate that height greatly diminished during breaking, which further affected pore-pressure responses. Moreover, values characteristic time larger than those free elevation breaking-waves. Under action incipient-breaking broken amplitude transient pore-pressures generally smaller predicted results analytical solution Yamamoto et al. (1978) equivalent period.