Tidally induced residual flows around an island due to both frictional and rotational effects

Abstract

A hydrodynamic numerical model developed in polar coordinates derives the tidal characteristics around an island. Due to the frictional stress over the sloping topography four residual eddies are generated. The effect of the Earth's rotation deflects the tidal flow in the shallow waters near the island and marginally adjusts the residual flows. Relationships for the M2 tidal vorticity are derived for these effects which can be used to estimate the rectified vorticity distribution associated with tidal flow around islands. The corresponding bottom stress distributions, which are important in sediment transport studies, are briefly discussed. Copyright © 1980, Wiley Blackwell. All rights reserved