The influence of the breaking waves on the calculated rates of non-cohesive sediment transport is accounted for through the production of turbulent kinetic energy by the surface rollers, which results in increased eddy viscosity close to the free surface. The production of turbulent kinetic energy is controlled by the wave breaking parameters g1 and g2, according to the theory of Battjes and Janssen (1978).
The values of g1 and g2 that you specify in this dialogue have to be identical to those used in the wave simulation. If you cannot remember the values, you can read them from the specification file for the wave module.
Default values for the wave breaking parameters are 1.0 and 0.8, respectively, in agreement with the default values used in MIKE 21 SW.