Ali Osman Öncel, Ph.D

Earth Sciences Department

King Fahd University of Petroleum & Minerals

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  1. Oncel, A.O., Wilson, T., 2007. Anamalous seismotectonic interrelationships preceding the 1999 Izmit event, NW Turkey, vol.169, 259-270, Geophysical Journal International.

  2. Oncel, A.O., 2007. Static Stress Changes and Fault Interaction Related to the 1985 Nahanni Earthquakes, Western Canada, Proceedings of the 1st IASME / WSEAS International Conference on Geology and Seismology (GES'07), Portoroz, Slovenia, May 15-17, 2007 75-79.


  1. Oncel, A.O., Wilson, T., 2006. Evaluation of earthquake potential along the Northern Anatolian Fault Zone in the Marmara Sea using comparisons of GPS strain and seismotectonic parameters, Tectonophysics, 418, pp. 205-218. Paper listed in Science Direct Top25 most downloaded EPSL articles, April-June 2006.


  1. Oncel, A.O., Wilson, T., 2004. Correlation of seismotectonic variables and GPS strain measurements in western Turkey, Journal of Geophysical Research-American Geophysical Union,109, B11306, 13 pages. (see also SSA 2004 annual meeting).  Cited - Related Articles


  1. Oncel, A.O., Aydan,O.,2003. Variations in GPS-derived displacement and stresses during the 2003 Miyagi earthquakes, International Colloquium on the instrumentation and monitoring of landslides and earthquakes in Japan and Turkey, Ko-riyama, (H. Tano and Ö. Aydan (eds.)),81-90. Cited - Related Articles



  1. Huang, Q., Öncel, A.O., Sobolev, G.A., 2002. Precursory Seismicity Changes Associated with the M = 7.4 Izmit (Turkey) Earthquake, August 17, 1999, Geophysical Journal International, 151, 235-242. Cited - Related Articles

  2. Öncel, A.O., Wilson, T., 2002. Space-Time Correlations of Seismotectonic Parameters and examples from Japan and Turkey Preceding the Izmit    Earthquake, Bulletin Seismological Society of America, 92, 339-350. Cited - Related Articles



  1. Öncel, A.O.,    Wilson, T., Nishizawa, O.,2001. Size Scaling Relations in the Active Fault Networks of Japan and their correlation with Gutenberg-Richter b-Values, Journal of Geophysical Research-American Geophysical Union,106, 21,827-21,841. Cited - Related Articles


  1. Öncel, A.O., Wyss,    M., 2000. The major asperities of the 1999 M7.4 Izmit earthquake, defined by the microseismicity of the two decades before it, Geophysical Journal International-OXFORD.,143, 501-506. , Cited -Related Articles

  2. Kijko, A.., Öncel, A.O., 2000. Probabilistic Seismic Hazard Maps for Japanese Islands, Journal of Soil Dynamics and Earthquake  Engineering-Wessex Institute of Technology, 20, 485-491. Cited - Related Articles

  3. Mostafazadeh, M., Alptekin, Ö., Öncel, A.O., 2000. Body Waveform of Five Moderately Earthquakes in the Zagros Fold Thrust Belt,Vol 2, No 3, pp. 1-11, Journal of Seismology and Earthquake Engineering-IEESC. Related Articles

  4. Öncel, A.O., Wyss, M., 2000. Mapping the major asperities by minima of local recurrence time before the 1999 M7.4 Izmit earthquake, Book on Izmit earthquake, pp. 1-4, The Izmit and Duzce Earthquakes: preliminary results, Editors: Aykut Barka, Ozgür Kozaci, Serdar Akyüz and Erhan Altunel, Publisher: Istanbul Technical University, ISBN: 975-561-182-7.


  1. Öncel, A.O., Alptekin, Ö., 1999. Effect of aftershocks on estimation of earthquake hazard parameters: An example from the north Anatolian fault zone, Vol 19, 1-11, Natural Hazards-KLUWER ACADEMIC PUBLISHERS. Cited -Related Articles


  1. Öncel, A.O., Alptekin, Ö., Koral,H.,1998. The Dinar earthquake of october 1, 1996 (Mw=6.2) in southwestern Turkeyand earthquake hazard of the Dinar-Çivril fault, Vol. 152, 91-105, No:2; Pure and Applied Geophysics-BIRKHAUSER. Cited -Related Articles



  1. Öncel,A.O.,Main,I.,Alptekin,Ö.,Cowie,P.,1996. Spatiall variations of the fractal properties of seismicity in the Anatolian Fault Zones, Tectonophysics-ELSEVIER, 257, 189-202. Cited - Related Articles

  2. Öncel,A.O.,Main,I.,Alptekin,Ö.,Cowie,P.,1996. Temporal variations of the fractal properties of seismicity in the north Anatolian fault zone between 31°E and 41°E, Vol.146, No.2, , 147-159, Pure and Applied Geophysics-BIRKHAUSER. Cited - Related Articles


  1. Öncel,A.O.,Alptekin,Ö., Main,I.,1995.Temporal variations of the fractal properties of seismicity in the western part of the northAnatolian fault zone:possible artifacts due to improvements in station coverage,Vol.2,147-157, Nonlinear processes in Geophysics-European Geophysical Union. Cited-Related Articles

  2. Öncel, A.O., Alptekin, Ö., 1995.Fractal distributionand its application in Seismology, Jeofizik ,10, 11- 316, ISSN 0259-1472 (Turkish with English Abstract).

  3. Koral,H., Öncel,A.O., 1995.Seismological and structuralproperties of Izmit and vicinity, Jeofizik 9, 10;79-82, ISSN 0259-1472 (Turkish with English Abstract).

  4. Öncel, A.O., Yüksel, F.A., Alptekin, Ö., Main, I., & Khalili, A., (1995). A preliminary fractal analysis of faulting in the Zagros thrust belt, in Proc., Second International Conference on Seismology and Earthquake Engineering, Tehran, 149-156.



  1. Alptekin,Ö.,Öncel,A.O.,1993.Effects of Magnitude Errors in Seismic Risk Estimates and the Seismic Risk in Erzincan and Vicinity, Jeofizik 6,85-102 (Turkish with English Abstract).


  1. Alptekin,Ö.,Öncel,A.O., Yörük,A., 1992. Estimation of Seismic Risk for the North Anatolian Fault Zone by Maximumlikelihood Method, Jeofizik 6,35-53, (Turkish with English Abstract). Cited - Related Articles


  1. Öncel, A.O, 2007., Earthquake Problem in Marmara Sea-Marmara'da Deprem Sorunu, HABER7.

  2. Öncel, A.O., 2000. Microearathquakes in the Estimation of Large Earthquakes-Büyük Depremlerin Tahmininde Mikrodepremler, TÜBİTAK, Ekim,90-93.

  3. Öncel, A.O.(1995). Kobe Earthquake and Earthquake Hazard of Istanbul-Kobe depremi ve Istanbul'da deprem tehlikesi, Ultra Magazin, montly Journal, Mach, 1995, pp. 24-31