Radon variability at the Elat granite, Israel: Heteroscedasticity and nonlinearity

• Type: Article in International Scientific Journal
• Date: 2007

Authors

barbosa, sm (Author) Other; steinitz, g (Author) Other; piatibratova, o (Author) Other; silva, me (Author) FCUP; lago, p (Author) FCUP

Journal

Title: Geophysical Research Letters

Vol. 34

ISSN: 0094-8276

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 35 Citations

Scopus - 34 Citations

Scientific classification

FOS: Natural sciences > Earth and related Environmental sciences

Other information

Authenticus ID: P-004-86P

DOI: 10.1029/2007gl030065

Abstract (EN): The basic statistical features of radon time series from continuous radon monitoring at the Elat granite, Israel are analysed. A similar analysis is carried out for ancillary and possibly related geophysical parameters for the Elat area. The results show that air temperature, precipitable water and longwave radiation time series exhibit constant variance over the analyzed period, while radon time series, atmospheric pressure, short-wave radiation and total electron content exhibit heteroscedasticity. Furthermore, for radon and shortwave radiation the variability is associated with the overall mean level, while for atmospheric pressure such an association is not present. The analyzed radon time series not only are non-stationary but also nonlinear, reflecting the complex dynamics of radon emanation and transport in natural subsurface systems.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6