Based on fundamental research in nonlinear wave theory, new wave models for dynamic (phase resolved) simulation codes are designed, tested and used for applications in hydrodynamic laboratories and for coastal zone management; tsunami simulations concentrate on improvement of current siumulation tools.

A data base of spectral characteristics of Indonesian coastal waves is designed and maintained for specific coastal applications, such as for morphological changes, design of harbours and off-shore structures, ship safety.

The total amount of precipitation is balanced by evapotranspiration, overland run-off, river discharge and change in gound water storage. Eventhough more than one of these quantities will not be accurately known in general, it is possible through this balance law to investigate the effects of human and natural causes. For instance, effects of changing crop growth (influencing the ground water), effects of drainage (drying of peat lands), and effects of climate change.
The actual use of water for human consumption and production is studied as well.