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Preseismic Atmospheric Radon Anomaly Associated with 2018 Northern Osaka Earthquake
The concentration of the radioactive element radon is known to change in the ground before and after earthquakes. Previous studies have shown elevated radon levels in the atmosphere before the mainshock of a large inland earthquake due to foreshock activity and slow slip.
But now, researchers from Tohoku University have revealed an anomaly in this phenomenon. Through the analysis of data before and after the 2018 Northern Osaka Earthquake, they discovered that the atmospheric radon concentration decreased.
The results of their research were published online in Scientific Reports on April 2, 2021. ....

Japan General , Mitsuhiro Hirano , Yumi Yasuoka , Daichi Iwata , Takahiro Mukai , Jun Muto , Hiroyuki Nagahama , Yoshiro Ohmomo , Kobe Pharmaceutical University , School Of Science At Tohoku University , Tohoku University , Osaka Earthquake , Scientific Reports , Graduate School , Osaka Medical , Pharmaceutical University , Kobe Pharmaceutical , Nao Miura , ஜப்பான் ஜநரல் , தைய்சி இவாதா , ஹீரோயுக்கி நாகஹமா , கோபி மருந்து பல்கலைக்கழகம் , பள்ளி ஆஃப் அறிவியல் இல் தோஹோக்கு பல்கலைக்கழகம் , தோஹோக்கு பல்கலைக்கழகம் , அறிவியல் அறிக்கைகள் , பட்டதாரி பள்ளி ,