Stable coastal-trapped waves with stratification, topography and mean flow

Abstract

This set of Matlab mfiles (all having names that begin with “bigr”) can be used to calculate stable, inviscid coastal-trapped wave modal structures and dispersion curves under very general circumstances. Only a real frequency is allowed, so that instability and damping cannot be accounted for directly, but computations are more efficient than for the general case, long-wave parameters can be computed for first order wave equation calculations (see Brink, 1989), and a more general perturbation decay time (Brink, 1990) can also be obtained. Modal structures and energy diagnostics are provided. Generally speaking, the code is only useful for subinertial wave frequencies.