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

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

barbosa, sm (Autor) Outra; steinitz, g (Autor) Outra; piatibratova, o (Autor) Outra; silva, me (Autor) FCUP; lago, p (Autor) FCUP

Revista

Título: Geophysical Research Letters

Vol. 34

ISSN: 0094-8276

Editora: Wiley-Blackwell

Indexação

ISI Web of Knowledge - 36 Citações

Scopus - 35 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Ciências da terra e ciências do ambiente

Outras Informações

ID Authenticus: 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6