Journal : Acta Geophysica
Article : Spatial variations of precursory seismic quiescence observed in recent years in the eastern part of Turkey

Authors :
Yamasaki, K.
Department of Earth and Planetary Sciences, Faculty of Science, Kobe University, Nada, Kobe, Japan,,
Teisseyre, R.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Li, C.
School of Computer Engineering and Science, Shanghai University, Shanghai, China,,
Majdański, M.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Trojanowski, J.
Institute of Geophysics, Polish Academy of Sciences, Warszawa, Poland,,
Öztürk, S.
Gümüşhane University, Department of Geophysics, Gümüşhane, Turkey,,
Abstract : A statistical analysis is made for the eastern part of Turkey in the beginning of 2009 by studying the phenomenon of seismic quiescence as a potential precursor of the main shocks. The results produced four areas having seismic quiescence in the beginning of 2009. These areas are observed to be centered at 39.96°N–40.69 °E (around Aşkale, Erzurum), 39.36°N–39.74°E (around Ovac?k, Tunceli), 39.02°N–40.52°E (including Elaz?g( and Bingöl), and 38.45°N–42.94 °E (Van Lake). Based on the recent results showing 5 ±1.5 years quiescence before the occurrence of an earthquake in this region, the future earthquake would be expected between 2009.5 and 2010.5. The future earthquake occurrence may reach 2012 if we consider the standard deviation of average seismic quiescence as ±1.5 years. We have found that the M W = 6.0 Elazig (earthquake on 8 March 2010, followed a seismic quiescence starting about 5 years before the main shock. Thus, special interest should be given to the other regions where the seismic quiescence is observed.

Keywords : eastern Turkey, precursory seismic quiescence, decluster, seismicity pattern,
Publishing house : Instytut Geofizyki PAN
Publication date : 2012
Number : Vol. 60, no. 1
Page : 92 – 118

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Qute : Yamasaki, K. ,Teisseyre, R. ,Li, C. ,Majdański, M. ,Trojanowski, J. ,Öztürk, S. ,Öztürk, S. , Spatial variations of precursory seismic quiescence observed in recent years in the eastern part of Turkey. Acta Geophysica Vol. 60, no. 1/2012