Variations of soil radon and thoron concentrations in a fault zone and prospective earthquakes in SW Taiwan
Resource
Radiation Measurements 40,496-502
Journal
Radiation Measurements 40
Pages
496-502
Date Issued
2005
Date
2005
Author(s)
Yang, T.F.
Walia, V.
Chyi, L.L.
Fu, C.C.
Chen, C.H.
Liu, T.K.
Song, S.R.
Lee, C.Y.
Lee, M.
DOI
246246/2006111501243700
Abstract
An automatic station for soil gas monitoring was set up on an active fault zone of SW Taiwan.After more than one year of
continuous measurements,some spike-like anomalous high radon and thoron concentrations could be observed.A similar soil
radon spectrum was also obtained from an independent monitoring station,which was only 100 away.These anomalous
peaks usually occurred a few days or weeks before the earthquakes (M L 4 .5 ).This indicates that variations of both soil
radon and thoron can serve as useful tools for earthquake surveillance,esp.at fault zones.
Subjects
Thoron
Earthquake monitoring
Soil gas
3 He/4 He ratio
Taiwan
Type
journal article
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