日本海沿岸での飛来塩分の実地観測とその対策法の評価

抄録

The Sea salt spray is small particles of seawater, splashed up by wind and wave action. Transport of salt spray is also affected by wind, geographical condition and configuration of coastal structures. In thisstudy, 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 in 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 or shoreline are shown clearly. Characteristics of the coastal structure and geographical condition affect the transport of the sea salt spray. The effects of salt spray reduction is evaluated quantitatively by the numerical study.