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Relationships Between Fundamental Seismic Hazard Parameters for the Different Source Regions in Turkey

Author

Listed:
  • Yusuf Bayrak
  • Ahmet Yilmaztürk
  • Serkan Öztürk

Abstract

Turkey has been divided into eight different seismic regions taking into consideration the tectonic environments and epicenters of the earthquakes to examine relationships of the modal values (a/b), the expected maximum magnitudes (M max ) and the maximum intensities (I max ). For this purpose, the earthquakes for the time period 1900–1992 from the Global Hypocenter Data Base CD-ROM prepared by USGS, and for the time period 1993–2001 from the PDE data and IRIS data are used. Concerning the relationships developed between different magnitude scales and between surface wave magnitudes (M S ) and intensity for different source regions in Turkey, we have constructed a uniform catalog of M S . We have estimated the values of M max and I max using the Gumbel III asymptotic distribution. Highest a-values are observed in the Aegean region and the lowest b-values are estimated for the North Anatolian Fault. Maximum values of a/b, M max and I max are related to the eastern and western part of the North Anatolian Fault and the Aegean Arc. The lowest values of all parameters are observed near the Mid Anatolian Fault system. Linear relationships have been calculated between a/b, M max and I max using orthogonal regression. If one of the three parameters is computed, two other parameters can be calculated empirically using these linear relationships. Hazard maps of M max and I max values are produced using these relationships for a grid of equally spaced points at 1°. It is observed that the maps produced empirically may be used as a measure of seismic hazard in Turkey. Copyright Springer 2005

Suggested Citation

  • Yusuf Bayrak & Ahmet Yilmaztürk & Serkan Öztürk, 2005. "Relationships Between Fundamental Seismic Hazard Parameters for the Different Source Regions in Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 36(3), pages 445-462, November.
    • Handle: RePEc:spr:nathaz:v:36:y:2005:i:3:p:445-462
    DOI: 10.1007/s11069-005-4038-4
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    Cited by:

    1. Minakshi Mishra & Abhishek & R. B. S. Yadav & Manisha Sandhu, 2021. "Probabilistic assessment of earthquake hazard in the Andaman–Nicobar–Sumatra region," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 105(1), pages 313-338, January.
    2. Erdem Bayrak & Şeyda Yılmaz & Mustafa Softa & Tuğba Türker & Yusuf Bayrak, 2015. "Earthquake hazard analysis for East Anatolian Fault Zone, Turkey," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 76(2), pages 1063-1077, March.

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