TEMPORAL CHARACTERISTICS OF THE 2012 PERNIK EARTHQUAKE AFTERSHOCK SEQUENCE
Bulgarian Geophysical Journal, 2013, Vol. 39, DOI: https://doi.org/10.34975/BGJ-2013.39.7
Statistical analysis is applied to study temporal pattern of earthquake distribution in aftershock sequence of the 2012 Mw=5.6 Pernik earthquake. On the assumption that aftershocks are distributed in time as a non-stationary Poisson process the maximum likelihood method for estimating the parameters (K, c and p) of the modified Omori formula is used. A transformation from the time scale t to a frequency-linearized time scale τ is applied for testing the goodness of fit between the aftershock occurrence and different statistical models. It is found that the temporal distribution of the Pernik earthquake aftershocks is dominated by the classic power law decay in time.
aftershock, aftershock sequence, aftershock decay rate, southern Bulgaria
Author: Plamena Raykova
Affiliation: National Institute of Geophysics, Geodesy and Geography – BAS, str. Acad. G. Bonchev, bl. 3, Sofia 1113, Bulgaria
How to cite:
Raykova, P. (2013). TEMPORAL CHARACTERISTICS OF THE 2012 PERNIK EARTHQUAKE AFTERSHOCK SEQUENCE. Bulgarian Geophysical Journal, Vol. 39, p. 52-58. https://doi.org/10.34975/BGJ-2013.39.7