Yoshimichi YAMAMOTO@Dr.Eng.ySpeci

Yoshimichi YAMAMOTO@Dr.Eng.

ySpecial Fieldz
River, Coast and Port Engineering, and Construction Environment

yTopicsz
- Causes of countermeasures against floods, storm surge and bed topography changes
- Study on environmental protection and appropriate use of rivers and coasts.

yInformation about His Researchz
Phenomena due to waves in the area of steep slope beach are evaluated well by theories of regular waves.
However, as the sea bottom slope becomes gentler, we cannot evaluate better by these methods.
This is because we disregard the influence of irregularity of waves.
Like this example, there are phenomena which we cannot evaluate well, as far as we use the conventional methods, inside shallow seas.
Moreover, in recent years, on many coasts, sand beach has been diminished and coastal disasters have occurred frequently.
Therefore, I have tried to make these mechanisms obvious and advance the researches to propose countermeasures.
Furthermore, the major cause of the beach erosion is that the sediment transport has been interrupted by flood control facilities, breakwaters of ports and harbors, maintenance dredging for water channels, gravel collecting and so on.
Therefore, public and complicated problems such as this example must be settled in consideration of all social activities and influences.
I have advanced researches to acquire the largest effect for the disaster prevention with the smallest cost under such complicated system.
In addition to this, I have tried to consider factors of the water level rising depending on the global warming, influences to the ecological system and so on.