Naslov
Radon time variations and deterministic chaos

Autori
Planinić, Josip ; Vuković, Branko ; Radolić, Vanja

Izvornik
Journal of Environmental Radioactivity (0265-931X) 75 (2004), 1; 35-45

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
radon in atmosphere; continuous measurement; chaotic behavior

Sažetak
Radon concentrations were continuously measured outdoors, in living room and basement in 10 minute intervals for a month. The radon time series were analyzed by comparing algorithms to extract phase-space dynamical information. The application of fractal methods enabled to explore the chaotic nature of radon in the atmosphere. The computed fractal dimensions, such as Hurst exponent (H) from the rescaled range analysis, Lyapunov exponent (*=lambda) and attractor dimension, provided estimates of the degree of chaotic behavior. The obtained low values of the Hurst exponent (0<H<0.5) indicated anti-persistent behavior (non random changes) of the time series, but the positive values of the pointed out the great sensitivity on initial conditions and appearing deterministic chaos by radon time variations. The calculated fractal dimensions of attractors indicated more influencing (meteorological) parameters on radon in the atmosphere.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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