Estimation of Anomalous Variation in Atmospheric Radon Concentration Related to Earthquakes by Kalman Filter


Daichi Iwata1, Hiroyuki Nagahama1, Jun Muto2 and Yumi Yasuoka3, (1)Tohoku University, Sendai, Japan, (2)Department of Earth Science, Tohoku University, Sendai, Japan, (3)Kobe Pharmaceutical University, Kobe, Japan