SEISMICITY CHANGES DETECTION DURING THE SEISMIC SEQUENCES EVOLUTION AS EVIDENCE OF STRESS CHANGES
Published:
Jan 25, 2010
Keywords:
aftershock sequence stochastic models seismic quiescence MOF ETAS RΕΤAS
Abstract
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
Article Details
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Astiopoulos, A., Papadimitriou, E., Karakostas, V., Gospodinov, D., & Drakatos, G. (2010). SEISMICITY CHANGES DETECTION DURING THE SEISMIC SEQUENCES EVOLUTION AS EVIDENCE OF STRESS CHANGES. Bulletin of the Geological Society of Greece, 43(4), 1994–2004. https://doi.org/10.12681/bgsg.11390
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- Seismology
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References
Akaike, H., 1974. A new look at the statistical model identification, IEEE Trans. Automat. Control., AC–
, 716–723.
Erikson, L., 1986. User’s manual for DIS3D: A three-dimensional dislocation program with applications
to faulting in the Earth. Masters Thesis, Stanford Univ., Stanford, Calif., 167pp.
Ganas, A., Drakatos, G., Pavlides, S. B, Stavrakakis, G. N, Ziazia, M., Sokos, E., and Karastathis, V. K.,
The 2001 Mw=6.4 Skyros earthquake, conjugate strike–slip faulting and spatial variation in
stress within the central Aegean Sea. J. Geodynamics, 39, 61–77.
Gospodinov, D. and Rotondi, R., 2006. Statistical analysis of triggered seismicity in Kresna region of
SW Bulgaria, (1904) and the Umbria–Marche Region of Central Italy (1997). Pure Appl. Geophys,
, 1597–1615.
Karakostas, V. G., Papadimitriou, E. E. and Papazachos, C. B., 2004. Properties of the 2003 Lefkada,
Ionian Islands, Greece, earthquake seismic sequence and seismicity triggering, Bull. Seism. Soc. Am.,
, 463–473.
Karakostas, V. G., 2008. Relocation of aftershocks of the 2003 Lefkada sequence: Seismotectonic implications
/Proc. 3rd Hellenic Conf. Earthquake Engineering & Engineering Seismology, Athens 5–7
Nov. 2008/, CD ROM, pp.16.
Kisslinger, C., 1988. An experiment in earthquake prediction and the 7th May 1986 Andreanof Islands
earthquake, Bull. Earthquake Res. Inst. Univ. Tokyo, 61, 1–65.
Ogata, Y., 1988. Statistical models for earthquake occurrences and residual analysis for point processes.
J. Am. Stat. Assoc. 83, 9–27.
Ogata, Y., 1992. Detection of precursory relative quiescence before great earthquakes through a statistical
model, J. Geophys. Res., 97, 19, 845-19,871.
Ogata, Y., 1999. Seismicity analyses through point process modeling: A review, Pure Appl. Geophys.,
, 471–507.
Ohtake, M., T. Matumoto, and G. V. Latham, 1997. Seismicity gap near Oaxaca, southern Mexico as a
probable precursor to a large earthquake, Pure Appl. Geophys., 115, 375–385.
Omori, F., 1894.On the aftershocks of earthquakes. J.Coll. Sci., Imp. Univ. Tokyo 7, 111-200.
Papazachos, B. C., E. E. Papadimitriou, A. A. Kiratzi, C. B. Papazachos, and E. K. Louvari, 1998. Fault
plane solutions in the Aegean and the surrounding area and their tectonic implications, Bull. Geof.
Teor. Appl., 39, 199–218.
Papazachos, B. C. and P. E. Comninakis, 1971. Geophysical and tectonic features of the Aegean Arc, J.
Geophys. Res. 76, 8517–8533.
Roumelioti, Z., Kiratzi, A. and Dreger, D., 2004. The source process of the 2001 July 26 Skyros Island
(Greece) earthquake, Geophys. J. Intern., 156, 541–548.
Scordilis, E. M., Karakaisis, G. F., Karakostas, B. G., Panagiotopoulos, D. G., Comninakis, P. E. and Papazachos,
B. C., 1985. Evidence for transform faulting in the Ionian Sea: The Cephalonia Island earthquake
sequence, Pure Appl. Geophys., 123, 288–397.
Utsu, T., 1968. Seismic activity in Hokkaido and its vicinity (in Japanese), Geophys. Bull. Hokkaido
Univ., 13, 99–103.
Utsu, T., 1969. Aftershocks and earthquake statistics (I): some parameters which characterize an aftershock
sequence and their interaction. J. Fac. Sci., Hokkaido Univ., Ser. VII 3, 129–195.
Wessel, P. and Smith, W. H. F., 1998. New, improved version of the Generic Mapping tools Released, EOS
Trans. AGU, 79, 579.
Wiemer, S. and Zuniga, R. F., 2001. ZMAP: A software package to analyze seismicity, EOS, Trans, 44,
Wyss, M., and R. O. Burford, 1987. A predicted earthquake on the San Andreas fault, California, Nature,
, 323–325.
Zahradnik, J., 2002. The weak–motion modelling of the Skyros island, Aegean Sea Mw=6.5 earthquake
of July 26. Studia Geophys. Geodaet., 46, 753–771.
