Trends of bathymetric variations at a tidal inlet

Abstract

This work aims at establishing the trends of erosion and deposition in the Ria de Aveiro inlet and surrounding area. Bathymetric changes were evaluated through two different methodologies: analysis of bathymetric field data and results from numerical modeling. The numerical results of bathymetric changes obtained show deposition trends at the centre of the navigat ion channel, and erosion close to the north jetty. These erosion trends show that the stability of the part of the north jetty located in the inlet might be threatened. The comparisons of the numerical results with the observed data allow establishing the performance of the model in simulating bathymetric variations for the period under study.