Ph.D. Tezi Görüntüleme

Student:	Serkan ÖZTÜRK
Supervisor:	Assoc. Prof. Dr. Yusuf BAYRAK
Department:	Jeofizik Mühendisliği
Institution:	Graduate School of Natural and Applied Sciences
University:	Karadeniz Technical University, Turkey

Title of the Thesis:	An Application of the Earthquake Hazard and Aftershock Probability Evaluation Methods to Turkey Earthquakes
Level:	Ph.D.
Acceptance Date:	30/6/2009
Number of Pages:	373
Registration Number:	Di692

Summary:

For whole aftershock sequences, b, p and c-values are compatible with the values given in literature and acceptable for detailed analyses. b-values show a regional variability between 0.7 and 2.0, and p-values between 0.6 and 1.35. In general, the lower b-values are compatible with the areas in high stress and the largest aftershocks occurred and the lower p-values with high topography values. It is not observed a clear relation between the lower and higher b-value with geology and topography while the larger p-values are generally observed on alluvium structures. The difference between main shock and the largest aftershock detected G-R relationship is 0.89. The occurrence of the largest event after the main shock is in the first four days. Except for a few relations, the empiric relationships developed between the aftershock parameters are not reliable enough. Also, using the data which is applied the declustering algorithm, the mean duration of seismic quiescence before the occurrence of an earthquake is calculated as 4.9 years for the earthquakes which occurred after 2000.

Key Words: Aftershock, Modified Omori Law, Gutenberg-Richter Relation, Seismicity Rate Changes, Precursory Seismic Quiescence