SEISMICITY CHANGES DETECTION DURING THE SEISMIC SEQUENCES EVOLUTION AS EVIDENCE OF STRESS CHANGES

 
This item is provided by the institution :

Repository :
Bulletin of the Geological Society of Greece  | ΕΚΤ eJournals
see the original item page
in the repository's web site and access all digital files if the item*
share




2010 (EN)
SEISMICITY CHANGES DETECTION DURING THE SEISMIC SEQUENCES EVOLUTION AS EVIDENCE OF STRESS CHANGES (EN)

Karakostas, V.
Gospodinov, D.
Drakatos, G.
Papadimitriou, E.
Astiopoulos, A.C.

The statistical properties of the aftershock occurrence are among the main issues in investigating the earthquake generation process. Seismicity rate changes during a seismic sequence, which are detected by the application of statistical models, are proved to be precursors of strong events occurring during the seismic excitation. Application of these models provides a tool in assessing the imminent seismic hazard, oftentimes by the estimation of the expected occurrence rate and comparison of the predicted rate with the observed one. The aim of this study is to examine the temporal distribution and especially the occurrence rate variations of aftershocks for two seismic sequences that took place, the first one near Skyros island in 2001 and the second one near Lefkada island in 2003, in order to detect and determine rate changes in connection with the evolution of the seismic activity. Analysis is performed through space–time stochastic models which are developed, based upon both aftershocks clustering studies and specific assumptions. The models applied are the Modified Omori Formula (MOF), the Epidemic Type Aftershock Sequence (ETAS) and the Restricted Epidemic Type Aftershock Sequence (RETAS). The modelling of seismicity rate changes, during the evolution of the particular seismic sequences, is then attempted in association with and as evidence of static stress changes (EN)

info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article (EN)

ETAS (EN)
RΕΤAS (EN)
stochastic models (EN)
aftershock sequence (EN)
MOF (EN)
seismic quiescence (EN)

Ελληνική Γεωλογική Εταιρεία (EL)
Geological Society of Greece (EN)

Δελτίο της Ελληνικής Γεωλογικής Εταιρίας

2010-01-25


Geological Society of Greece (EN)

0438-9557
2529-1718
Δελτίο της Ελληνικής Γεωλογικής Εταιρείας; Vol 43, No 4 (2010): 12th International Conference of the G.S.G.; 1994-2004 (EL)
Bulletin of the Geological Society of Greece; Vol 43, No 4 (2010): 12th International Conference of the G.S.G.; 1994-2004 (EN)

Copyright (c) 2017 A.C. Astiopoulos, E. Papadimitriou, V. Karakostas, D. Gospodinov, G. Drakatos (EN)



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)