Scaling Analysis of Time Distribution between Successive Earthquakes in Aftershock Sequences |
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| Authors: | Elisaveta Marekova |
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| Institution: | 1.Plovdiv University “Paisiy Hilendarski”,Plovdiv,Bulgaria |
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| Abstract: | The earthquake inter-event time distribution is studied, using catalogs for different recent aftershock sequences. For aftershock sequences following the Modified Omori’s Formula (MOF) it seems clear that the inter-event distribution is a power law. The parameters of this law are defined and they prove to be higher than the calculated value (2–1/p). Based on the analysis of the catalogs, it is determined that the probability densities of the inter-event time distribution collapse into a single master curve when the data is rescaled with instantaneous intensity, R(t; M th ), defined by MOF. The curve is approximated by a gamma distribution. The collapse of the data provides a clear view of aftershock-occurrence self-similarity. |
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