GIS based seismic hazard mapping of Turkey

Yunatcı, Ali Anıl
Efficiency of probabilistic seismic hazard analysis mainly depends on the individual successes of its complementing components; such as source characterization and ground motion intensity prediction. This study contributes to major components of the seismic hazard workflow including magnitude – rupture dimension scaling relationships, and ground motion intensity prediction. The study includes revised independent models for predicting rupture dimensions in shallow crustal zones, accompanied by proposals for geometrically compatible rupture area-length-width models which satisfy the rectangular rupture geometry assumption. Second main part of the study focuses on developing a new ground motion prediction model using data from Turkish strong ground motion database. The series of efforts include, i) compilation and processing of a strong motion dataset, ii) quantifying parameter uncertainties of predictive parameters such as magnitude and source to site distance; and predicted accelerations due to uncertainty in site conditions and response, as well as uncertainty due to random orientation of the sensor, iii) developing a ground response model as a continuous function of peak ground acceleration and shear wave velocity, and finally, iv) removing bias in predictions due to uneven sampling of the dataset. Auxiliary components of the study include a systematic approach to source characterization problem, with products ranging from description of systematically idealized and documented seismogenic faults in Anatolia, to delineation, magnitude-recurrence parameterization, and selection of maximum magnitude earthquakes. Last stage of the study covers the development of a custom computer code for probabilistic seismic hazard assessment which meets the demands of modern state of practice.


Generalized pushover analysis
Alıcı, Fırat Soner; Sucuoğlu, Haluk; Department of Civil Engineering (2012)
Nonlinear response history analysis is considered as the most accurate analytical tool for estimating seismic response. However, there are several shortcomings in the application of nonlinear response history analysis, resulting from its complexity. Accordingly, simpler approximate nonlinear analysis procedures are preferred in practice. These procedures are called nonlinear static analysis or pushover analysis in general. The recently developed Generalized Pushover Analysis (GPA) is one of them. In this th...
Investigation of seismic isolation efficiency for building structures
Özdemir, Seda; Yakut, Ahmet; Ay, Bekir Özer; Department of Earthquake Studies (2016)
The main goal of this study is to assess the efficacy of seismic isolation for building type of structures with different structural systems, namely, dual systems and moment frame systems having also different number of floors. Specific to this study, the main parameters employed for efficacy assessment will be the interstorey drift ratio and floor acceleration since both structural and non-structural damage to be occured in a system are directly related to these two parameters. To assess the variations in inter...
Practical tools for ranking and selection of groundmotion prediction equations (GMPEs) for probabilistic seismic hazard assessment and development of a regional GMPE
Kale, Özkan; Akkar, Sinan; Danciu, Laurentiu; Department of Civil Engineering (2014)
This study starts summarizing the progresses in ground-motion databases and ground-motion models in pan-European region and consequent seismic hazard comparisons conducted for individual local and global predictive models. Then, the study presents the compilation of the Middle East region and Turkish ground-motion databases with principle seismological features to be mainly used in predictive model selection process in these regions. In the following step, using a high standard subset of the Middle East gro...
Thermal analysis applications in fossil fuel science - Literature survey
Kök, Mustafa Verşan (2002-01-01)
In this study, instances where thermal analysis techniques ( differential scanning calorimetry, thermogravimetry, differential thermal analysis, etc.) have been applied for fossil fuel characterisation and kinetics are reviewed. The scientific results presented clearly showed that thermal analysis is a well-established technique used in fossil fuel research area. The literature survey showed that thermal methods were important not only theoretically but also from a practical point of view.
Influence of seismic source and ground motion modeling on the probabilistic seismic hazard assessment of the city of Van after the 23 october 2011 mw7.2 earthquake
Şenyurt, Mehtap; Akkar, Sinan; Yılmaz, Mustafa Tolga; Department of Civil Engineering (2013)
Reliable assessment of seismic hazard is the most important step for seismic design and performance assessment of structural systems. However, the inherent uncertainty in earthquakes as well as modeling of ground motion may affect the hazard computed for a particular region. This study investigates the influence of seismic source and ground motion modeling on probabilistic seismic hazard assessment (PSHA). The study considers the seismicity around the city of Van to achieve its objective as this city was hi...
Citation Formats
A. A. Yunatcı, “GIS based seismic hazard mapping of Turkey,” Ph.D. - Doctoral Program, Middle East Technical University, 2010.