Uranium groundwater anomalies and L'Aquila earthquake, 6th April 2009 (Italy)

Journal of Environmental Radioactivity
Wolfango PlastinoEugenio Coccia

Abstract

Monitoring of chemical and physical groundwater parameters has been carried out worldwide in seismogenic areas with the aim to test possible correlations between their spatial and temporal variations and strain processes. Uranium (U) groundwater anomalies were observed during the preparation phases of the recent L'Aquila earthquake of 6th April 2009 in the cataclastic rocks near the overthrust fault crossing the deep underground Gran Sasso National Laboratory. The results suggest that U may be used as a potential strain indicator of geodynamic processes occurring before the seismic swarm and the main earthquake shock. Moreover, this justifies the different radon patterns before and after the main shock: the radon releases during and after the earthquake are much than more during the preparatory period because the process does not include only the microfracturing induced by stress-strain activation, but also radon increases accompanying groundwater U anomalies.

References

Feb 20, 2004·Nature·Stephen A MillerBoris J P Kaus
Jul 7, 1995·Science·C Y KingY Kitagawa
Aug 31, 1973·Science·C H ScholzY P Aggarwal

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Radiation Monitoring
Actinon
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