Monte Carlo simulations of seabed shear stresses under irregular waves plus current

The maximum and time-averaged shear stresses on a rough seabed under irregular waves plus current are calculated by applying Monte Carlo simulation Numerical estimates of the probability distribution functions are presented. For the case of waves only, the maximum shear stresses follow a Weibull distribution, while for the case of waves plus current , both the maximum and time-averaged shear stresses can be modelled by a three parameter Weibull distribution. Calculatedcharacteristic statistical values of the maximum bottom shear stresses have been compared to experimental results.