Fuminori YAMADA

Numerical Study of Production and Transportation of Sea Salt Spray

Tokuzou HOSOYAMADA

The Sea salt spray is the small particle of seawater, splashed up by wind and wave action. Transportation of salt spray is also affected by wind, geographical condition and configuration of coastal structures.

In this study, integrated numerical code which covers 1) wave propagation with wave breaking, 2) generation of sea salt spray flux in the surface, 3) advection-diffusion of sea salt spray, is developed. Field observation at Osaki-Coast in Ishiji town, Niigata Pref. is also carried out to compare the numerical results.
It is shown that the amount of the spray generated on the sea surface is related to both wind and wave action. The amount of sea salt spray production and transportation can be estimated by the numerical model. The salt spray production around coastal structures and shoreline are shown clearly. It becomes clear that characteristics of the coastal structure and geographical condition reflect the transport of the sea salt spray. Reduction of the total amount of salt spray is discussed by the field investigation and numerical simulation.