High resolution analyses of temporal variations of airborne radionuclides

Temporal variations of 210Pb, 212Pb and 7Be were measured at 1-2 h of intervals simultaneously at Tatsunokuchi, Shishiku Highland (640 m above sea level) and Hegura Island located 50 km from Noto Peninsula. It was recognized that variations of these nuclides occured in a short time depending on meteorological circumstances such as the passage of typhoon, snow fall and even in calm conditions.