Affiliation:Assoc. Prof., Institute of Industrial Science
Marine food production system
The consumption of seafood is increasing all over the world. On the other hand, the production of seafood continues declining in Japan. For effective and sustainable marine food production, an aquaculture system at exposed seas and automated net-hauling system for set net fishery are developed aiming at energy-saving, labor-saving, and cost-saving.
Assessment of performance and environmental impacts of marine renewable energy
Japan has large potential of renewable energy in the Exclusive Economic Zone. The performance of the motion-controlled ship with wave energy harvester is evaluated by water tank and field tests. The collision risk of marine animals to the rotating turbines is examined by water tank test using sample fish. Through these studies, marine renewable energy converters are developed in harmony with marine ecosystem.
Ecosystem simulation of lakes and coastal seas
A wide variety of environmental problems arises in lakes and coastal area all over the world. A hydrodynamic and ecosystem coupled model is developed to understand the physical, chemical, and biological processes in aquatic environment. The effects of eutrophication and climate change on the ecosystem are examined for Tokyo Bay, Lake Biwa, Lake Kasumigaura, the Caspian Sea, aquaculture pond, etc. Then the measures to these problems are proposed and their effects are predicted by numerical simulation.
Keyword:Marine hydrodynamics, Marine food production, Marine renewable energy, Water tank test, Hydrodynamic and ecosystem coupled model