AIR POLLUTION OF KAGOSHIMA CITY AND SAKURAJIMA FROM THE VOLCANIC ASHES ERUPTED FROM MT.SAKURAJIMA (Part 1) : Investigation from Mar. 29, 1978 through Mar. 31, 1979

Measurements of amount of falling dust which consisted essentially of the volcanic ashes and rain collected in a British standard deposit gauge, and sulfur oxide adsorbed onto PbO_2-candle were made every month at twenty locations in Kagoshima-city and Sakurajima. A detailed analysis was also done for the falling dust and rain. The results obtained showed that enormous amount of falling dust was detected at Sakurajima, especially at Sakurajima middle school (18810 ton/km^2 ･ month in August), and that the amount of sulfur oxide adsorbed depended strongly on time and the location. Maximum sulfur oxide adsorption (192mg/100cm^2 ･ day) was found at Sakurajima Hospital in May