Wave Evolution on Fluid Mud Bottom

It is well known that surface water waves interact with the fluid mud on the sea bed. Wave-mud interaction results to high wave energy dissipation and mud mass transport. This kind of wave energy dissipation, which generally is much more significant than wave dissipation due to bottom friction, should be considered in simulation of wave evolution and transformation in muddy coastal environments. This paper presents a numerical model of wave evolution and dissipation on fluid mud. For this purpose, the spectral decay of wave due to mud is implemented in SWAN (a third generation numerical model for Simulating WAves Nearshore) using a multilayered wave-mud interaction model. In this numerical model it is assumed that mud layer has a visco-elasic-plastic behavior.