Analysis of geophysical and meteorological parameters influencing Rn-222 activity concentration in Mladec caves (Czech Republic) and in soils of Phlegrean Fields caldera (Italy)
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F20%3A00345800" target="_blank" >RIV/68407700:21340/20:00345800 - isvavai.cz</a>
Výsledek na webu
<a href="https://doi.org/10.1016/j.apradiso.2020.109140" target="_blank" >https://doi.org/10.1016/j.apradiso.2020.109140</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.apradiso.2020.109140" target="_blank" >10.1016/j.apradiso.2020.109140</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Analysis of geophysical and meteorological parameters influencing Rn-222 activity concentration in Mladec caves (Czech Republic) and in soils of Phlegrean Fields caldera (Italy)
Popis výsledku v původním jazyce
The present work concerns a detailed analysis of Radon time series to differentiate endogenous from exogenous phenomena which provide anomalous signals. Two-year data from two sites in Czech Republic and in Italy are analyzed in order to contribute to the prevention of natural hazards. A new hybrid forecasting method is implemented and tuned for the identification of Radon anomalies in the time series. It is based on the combination of Multiple Linear Regressions, Empirical Mode Decomposition and Support Vector Regression methods that decompose the signal and analyze the components to distinguish the variations due to Radon originated in depths from those due to environmental parameters. The possible correlations with fumarolic tremors in the Italian site and the faults micmdisplacements in the Czech site have been studied, as well as with the earthquakes that have influence on two studied areas. Results show that: (i) the used method is very effective considering the calculated statistical uncertainties; (ii) the outer temperature is the main influencing Radon driving force; (iii) the extracted Radon anomalies due to endogenous phenomena are well correlated with fault displacements, fumarolic tremors, and with earthquakes under a characteristic delay time for each area; (iv) significant correlations among earthquake magnitude and depth with fault displacement and fumarolic tremor are found.
Název v anglickém jazyce
Analysis of geophysical and meteorological parameters influencing Rn-222 activity concentration in Mladec caves (Czech Republic) and in soils of Phlegrean Fields caldera (Italy)
Popis výsledku anglicky
The present work concerns a detailed analysis of Radon time series to differentiate endogenous from exogenous phenomena which provide anomalous signals. Two-year data from two sites in Czech Republic and in Italy are analyzed in order to contribute to the prevention of natural hazards. A new hybrid forecasting method is implemented and tuned for the identification of Radon anomalies in the time series. It is based on the combination of Multiple Linear Regressions, Empirical Mode Decomposition and Support Vector Regression methods that decompose the signal and analyze the components to distinguish the variations due to Radon originated in depths from those due to environmental parameters. The possible correlations with fumarolic tremors in the Italian site and the faults micmdisplacements in the Czech site have been studied, as well as with the earthquakes that have influence on two studied areas. Results show that: (i) the used method is very effective considering the calculated statistical uncertainties; (ii) the outer temperature is the main influencing Radon driving force; (iii) the extracted Radon anomalies due to endogenous phenomena are well correlated with fault displacements, fumarolic tremors, and with earthquakes under a characteristic delay time for each area; (iv) significant correlations among earthquake magnitude and depth with fault displacement and fumarolic tremor are found.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10505 - Geology
Návaznosti výsledku
Projekt
<a href="/cs/project/EF16_019%2F0000778" target="_blank" >EF16_019/0000778: Centrum pokročilých aplikovaných přírodních věd</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2020
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Applied Radiation and Isotopes
ISSN
0969-8043
e-ISSN
1872-9800
Svazek periodika
160
Číslo periodika v rámci svazku
Jun
Stát vydavatele periodika
GB - Spojené království Velké Británie a Severního Irska
Počet stran výsledku
12
Strana od-do
—
Kód UT WoS článku
000528842400005
EID výsledku v databázi Scopus
2-s2.0-85082401305