Akademik Veri Yönetim Sistemi
Surveys in Geophysics, cilt.35, sa.2, ss.449-478, 2014 (SCI-Expanded)
In earthquake prediction studies, the regional behaviour of accurate 222 Rn measurements at a set of sites plays a significant role. Here, measurements are obtained using active and passive radon detector systems in an earthquake-active region of Turkey. Two new methods are proposed to explain the spatial behaviours and the statistical uncertainties in the 222 Rn emission measurements along fault lines in relation to earthquake occurrence. The absolute point cumulative semivariogram (APCSV) and perturbation method (PM) help to depict the spatial distribution patterns of 222 Rn in addition to the joint effects of the K dr , the radon distribution coefficient, and the perturbation radon distribution coefficient (PRDC). The K dr coefficient assists in identifying the spatial distributional behaviour in 222 Rn concentrations and their migration along the Earth's surface layers. The PRDC considers not only the arithmetic averages but also the variances (or standard deviations) and the correlation coefficients, in addition to the size of the error among the 222 Rn measurements. The applications of these methodologies are performed for 13,000 222 Rn measurements that are deemed to be sufficient for the characterization of tectonics in the Keban Reservoir along the East Anatolian Fault System (EAFS) in Turkey. The results are evaluated for the İçme earthquake (M L 5.4, 5.7 km, 23 June 2011), which occurred in the vicinity of the EAFS. © 2013 Springer Science+Business Media Dordrecht.