Περίληψη:
Applying natural time analysis, which has been introduced by the authors in 2001, to the Japanese seismic data, we find that the system enters the critical stage upon the occurrence of M = 4.2–5.0 earthquakes from 08:36 to 13:14 local time (LT) on 10 March 2011, i.e., almost one day before the M9 Tohoku earthquake on 11 March 2011. Here, we find that just before this period the Tsallis entropic index q of non-extensive statistical mechanics started to show distinct changes. In addition an evident change of q is found upon the occurrence of the M7.3 foreshock at 11:45 LT on 9 March 2011, which exhibits a scaling behavior with a characteristic exponent 1∕3 that conforms to Lifshitz-Slyozov-Wagner theory for phase transitions. © 2020, EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature.
Συγγραφείς:
Skordas, E.S.
Sarlis, N.V.
Varotsos, P.A.
