Observations of surface radon in Central Italy |
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| Authors: | Piero Di Carlo Giovanni Pitari Natalia De Luca Domenico Battisti |
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| Institution: | (1) Dipartimento di Fisica, Universita’ degli studi di L’Aquila, Via Vetoio, 67010 Coppito, L’Aquila, Italy;(2) Center of Excellence CETEMPS Universita’ degli studi di L’Aquila, Via Vetoio, 67010 Coppito, L’Aquila, Italy |
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| Abstract: | Two years of in situ radon concentration measurements in the atmospheric surface layer have been collected in a central Italy
town (L’Aquila), located in the Aterno river valley. These data have been analyzed in order to study the controlling mechanisms
of surface radon abundance; observations of coincident meteorological parameters confirmed the role of dynamics on the local
removal rate of this tracer. The relatively high negative correlation of hourly data of surface wind speed and radon activity
concentration (R = −0.54, on annual scale) suggests that dynamical removal of radon is one of the most important controlling processes of
the tracer accumulation in the atmospheric surface layer. An attempt is made to quantify the precipitation impact on radon
soil fluxes. No anticorrelation of radon and precipitation comes out from the data (R = −0.15), as in previous studies. However, since the main physical parameter affecting the ground radon release is expected
to be the soil accumulation of water, snow or ice, the emission flux has also been correlated with soil moisture; in this
way a much clearer anticorrelation is found (R = −0.54). |
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| Keywords: | Evapotranspiration Radon Soil Precipitation Radioactivity |
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