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| Titel |
Radon in soil gas at the Ravne fault in NW Slovenia |
| VerfasserIn |
J. Vaupotič, A. Gregorič, I. Kobal, P. Žvab, K. Kozak, J. Mazur, E. Kochowska, D. Grządziel |
| Konferenz |
EGU General Assembly 2009
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 11 (2009) |
| Datensatznummer |
250027541
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| Zusammenfassung |
| The Ravne tectonic fault in north-west Slovenia is one of the faults in this region, responsible
for the elevated seismic activity at the Italian-Slovene border. At 18 points along five profiles,
four perpendicular and one parallel to the fault, the following measurements have been
carried out: radon activity concentration in soil gas, using an AlphaGuard radon monitor
and alpha scintillation cells, radon exhalation rate and soil permeability, using the
AlphaGuard equipment, and gamma dose rate, using GammaTracer. The ranges of
the obtained results are as follows: (0.9–33.9) kBq m-3 for radon concentration,
(1.1–41.9) mBq m-2 s-1 for radon exhalation rate, (0.5–7.4)Ã10-13 m2 for soil
permeability, and (86–138) nSv h-1 for gamma dose rate. Dependence of radon
concentration and exhalation rate on the distance from the fault has been sought but not
univocally understood. At three perpendicular profiles, values of both parameters
increase when approaching the fault, while the opposite was found at one. At the very
centre of the fault, both values were lowest at one profile, but at another, radon
activity was highest and exhalation rate lowest. At all points, permeability may be
considered as medium and gamma dose rate as similar to other places in Slovenia. |
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