Article Dans Une Revue Natural Hazards and Earth System Sciences Année : 2010

Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series

Résumé

Two hourly-sampled time-series of soil-gas radon concentrations of durations of the order of a year have been investigated for periodic and anomalous phenomena. These time-series have been recorded in locations having little or no routine human behaviour and thus are effectively free of significant anthropogenic influences. One measurement site, Sur-Frêtes, is located in the French Alps, with saturated soil conditions; the second site, Syabru-Bensi, is located in Nepal, in a river terrace with unsaturated soil conditions. In such conditions, periodic components with periods ranging from 8 h to 7 days are often weak and intermittent and therefore, even in the presence of stationary forcing, difficult to identify.

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hal-00554241 , version 1 (08-03-2016)

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R. G. M. Crockett, Fréderic. Perrier, P. Richon. Spectral-decomposition techniques for the identification of periodic and anomalous phenomena in radon time-series. Natural Hazards and Earth System Sciences, 2010, 10 (3), pp.559-564. ⟨10.5194/nhess-10-559-2010⟩. ⟨hal-00554241⟩
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