Modelling pore pressure response as a function of tide in the Venice lagoon marshes.

Pore pressure response in the ground forming the Venice lagoon marshes and wetlands under daily tide excursion is modelled using a finite element approach based on the hybrid-mixture theory. To this end, the soil forming the marshes is assumed to be a deformable multiphase porous media, in a thermo-dynamic equilibrium state both in fully saturated and partially saturated conditions. The results of the finite element analyses are compared with accurate water pressure field measurements, carried out on a typical Venice lagoon marsh.