Coupling models for ocean waves, groundwater and porous seabeds interaction

• Dr. Dong Jeng
• Professor Brian Seymour (UBC)
• Dr. Frank Lu (USYD)

The ocean waves, groundwater flow and porous seabeds interaction problem is vital for erosion control, saltily and biological activities in coastal regions. Most previous research has investigated the problem from individual aspects, rather than a coupling concept. In this study, we will develop advanced theoretical models for procedures of wave propagation, water table fluctuations and soil behaviour in a porous seabed, and couple them in a model. A series of experiments will be conducted for the verification of the theoretical findings. The research outcomes will provide a better understanding of the interaction between ocean wave, groundwater flow and porous seabeds.

The project consists of four tasks:
* Wave model: analytical and numerical model for ocean waves propagating over a sloping beach will be developed.
* Groundwater water model: The ocean wave-induced water table fluctuations in coastal aquifer will be re-examined based on shallow water expansion.
* Geotechnical model: Effects of soil characteristics on the water table fluctuations will be examined.
* Coupling model: the above three model will be coupled into one model.

This project is support by Australian Research Council Discovery Grant (2004-2007).