Barotropic coastal trapped wave modes with complex frequency: edge, shelf and Kelvin waves

Abstract

This set of Matlab mfiles (all with names beginning with “bwavesc”) can be used to calculate barotropic coastal wave properties in the absence of density stratification. The wave frequency is complex so that unstable or strongly damped modes can be treated. You are allowed to have a mean alongshore flow, if desired, and you can apply the rigid lid approximation. The model can be run in the non-rotating limit if desired. Once a wave’s frequency is found, the modal structure is displayed. The code can use an exact open boundary condition or a closed condition at either side of the domain.