EIGENFUNCTIONS IN THE GALERKIN METHOD OF TIDAL CURRENT MODELING

Empirical orthogonal function (EOF) analysis of acoustic doppler curre nt profiler data is used to provide a physical justification for the u se of eigenfunctions derived from simple vertical eddy viscosity profi les in the Galerkin method of three-dimensional, tidal current modelli ng in a homogenous sea region. A good fit of EOF modes to eigenfunctio ns derived from a simple parameterized vertical eddy viscosity profile is obtained. An empirical determination of the most appropriate expre ssion for the temporal dependence of such vertical eddy viscosity prof iles is also given. Copyright (C) 1996 Elsevier Science Ltd.