Autonomous Geomorphic Recovery Process of Tidal Flat after Natural Disaster and its Numerical Model

To make clear an autonomous geomorphic recovery process of tidal flat after natural disaster such as a powerful typhoon, and to propose technical development of restoration and maintenance in tidal land, we have observed wave height and current in the artificial tidal land and also have investigated autonomous recovery process of soil environment in the artificial tidal land after a natural disaster. We also developed the N disperse-two phase flow model considering both the Newtonian and Bingham fluid to calculate intertidal flow, topography exchange, tidal wave and underground water. The proposed model can explain qualitatively the autonomous geomorphic recovery process of tidal flat after typhoon damage.