Scaling properties of the Mw7.0 Samos (Greece), 2020 aftershock sequence

Vallianatos, Filippos; Pavlou, Kyriaki

doi:10.1007/s11600-021-00579-5

Artykuł - szczegóły

Tytuł artykułu

Scaling properties of the Mw7.0 Samos (Greece), 2020 aftershock sequence

Autorzy

Vallianatos Filippos , Pavlou Kyriaki

Wybrane pełne teksty z tego czasopisma

https://www.springer.com/journal/11600

Identyfikatory

DOI

10.1007/s11600-021-00579-5

Warianty tytułu

Języki publikacji

Abstrakty

On October 30, 2020, a strong and shallow earthquake (Mw=7.0) hit Samos, an island on the eastern edge of the Aegean Sea (Greece). The epicenter was located on the north ofshore of the Greek island of Samos. The goal of our work is to provide a frst analysis of the scaling properties observed in the aftershock sequence as reported until December 31, 2020, as numerous seismic clusters activated. Our analysis is focused on the main of the clusters observed in the East area of the activated fault zone and strongly related with the mainshock’s fault. The aftershock sequence follows the Omori law with a value of p ≈ 1.01 for the main cluster which is remarkably close to a logarithmic evolution. The analysis of interevent times distribution, based on non-extensive statistical physics indicates a system in an anomalous equilibrium with a crossover from anomalous (q>1) to normal (q=1) statistical mechanics, as great interevent times approached. A discussion of the crossover observed, is given in terms of superstatistics. In addition, the obtained value q ≈ 1.67 suggests a system with one degree of freedom. Furthermore, a scaling of the migration of aftershock zone as a function of the logarithm of time is discussed in terms of rate strengthening rheology that govern the evolution of afterslip process.

Słowa kluczowe

earthquake Samos aftershocks Tsallis entropy interevent time afterslip

trzęsienie ziemi Samos wstrząs wtórny entropia Tsallisa

Wydawca

Instytut Geofizyki PAN
Springer

Czasopismo

Acta Geophysica

Rocznik

2021

Tom

Vol. 69, no. 3

Strony

1067--1084

Opis fizyczny

Bibliogr. 93 poz.

Twórcy

autor

Vallianatos Filippos

fvallian@geol.uoa.gr

Section of Geophysics – Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Panepistimiopolis, Athens, Greece
Institute of Physics of Earth’s Interior and Geohazards, UNESCO Chair on Solid Earth Physics and Geohazards Risk Reduction, Hellenic Mediterranean University Research Center, Grete, Greece

autor

Pavlou Kyriaki

Section of Geophysics – Geothermics, Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Panepistimiopolis, Athens, Greece
Institute of Physics of Earth’s Interior and Geohazards, UNESCO Chair on Solid Earth Physics and Geohazards Risk Reduction, Hellenic Mediterranean University Research Center, Grete, Greece

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