Residence time in micro-tidal basins

To evaluate water quality, it is possible to use hydrodynamic indicators, instead of ecological models; the most widely used are some characteristic times-scale. Among them, in this work, residence time is considered. In this thesis residence time in Venice Lagoon is calculated starting from a punctual injection of a conservative tracer and then the results are compared with the outcomes of a previuos work in which residence time was computed starting from a diffused injection of the tracer