A SIMPLE METHOD FOR TIDAL CURRENT PREDICTION IN SHORT-LENGTH CONVERGENT CHANNELS - AN APPLICATION TO THE VIGO AND PONTEVEDRA ESTUARIES

In this paper a simple method for tidal current modelling in short len gth convergent and elongated channels is presented. The authors have f ound that for this kind of channels a very suitable approach to tidal current velocity estimation can be obtained through a very simple form ula. This method has been developed to obtain reliable tidal current v elocity estimations along the channel using as less information as pos sible. in fact, the only necessary information to apply this method ar e the harmonic constants of the tidal elevation at any location in the channel and a proper nautical chart. A graphical method is also prese nted to inquire when the geometrical characteristics of a given channe l allow the application of our method. The validation has been perform ed on two estuaries of the Gallega Estuarine System in Spain.