Preseismic atmospheric radon anomaly associated with 2018 Northern Osaka earthquake.

ABSTRACT: Despite the challenges in identifying earthquake precursors in intraplate (inland) earthquakes, various hydrological and geochemical measurements have been conducted to establish a possible link to seismic activities. Anomalous increases in radon (²²²Rn) concentration in soil, groundwater, and atmosphere have been reported prior to large earthquakes. Although the radon concentration in the atmosphere is lower than that in groundwater and soils, a recent statistical analysis has suggested that the average atmospheric concentration over a relatively wide area reflects crustal deformation. However, no study has sought to determine the underlying physico-chemical relationships between crustal deformation and anomalous atmospheric radon concentrations. Here, we show a significant dec

SUBMITTER: Muto J 

PROVIDER: S-EPMC8018951 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature