台風時における海塩粒子の内陸への輸送について

Abstract

Estimations of the distribution of sea-salt number concentration, the amounts of salt sedimentation, salt impaction near the coast at Hofu, Hiroshima, Mizushima during passage of the typhoon 9119 were carried out. As to the production rate, and the number concentration of sea-salt particles on the sea surface, new expressions by lida at als. (1992), by way of a nondimensional parameter including the wind stress and the spectral peak frequency of wind waves were applied. The effct of the fetch where wind flew on the sea surface and sea-salt particles were produced were taken into consideration. The impaction amounts of salt inland were calaculated using Tanaka's 1966 theory.The estimated total amounts of salt impaction near the coast can explain well with the distribution of the observed values.