海塩粒子捕集量におよぼす気象因子の影響

抄録

Buildings in coastal area are damaged by the flight of sea water aerosol, which is produced from crashing sea waves. It is rather necessary to know the quantity of salinity in the air before taking some measures against salt damages. Authors have been monitoring the amount of sea water aerosol in the air at Choshi, Asahikawa, Naha and Nishihara, by using gauze method regurated by JIS Z 2381. The relations between monthly amounts of salinity and hourly precipitation, wind direction, velocity data introduced by AMeDAS weather data were obtained. The results are summarized as follows : 1) There is certain correlation between the amounts of salinity in the air and wind velocity of each direction. And it is affected by rain. 2) The rain gives moisture to gauze spacimens and it makes easier and stronger to collect salinity in the air than in dry circumstances. Also the rain washes sea water aerosol away even in the moist atmosphere. 3) It was cleared that geographical features as a barrier for sea water aerosol intercept its flight. Where geographical barrier is not existent, flight direction of sea water aerosol is significantly invariable.