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SITE-SPECIFIC PROBABILISTIC SEISMIC HAZARD ASSESSMENT ANALYSES IN ZEYTINBURNU, ISTANBUL
Date
2018-09-02
Author
Askan Gündoğan, Ayşegül
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The first step in estimation of seismic losses in urban areas is the assessment of regional seismic hazard. The source and local site parameters determine the accuracy of the hazard model. Using locally derived input parameters in site response modeling and hazard analyses, the earthquake potential of Zeytinburnu region in Istanbul is investigated in detail. In this study, two alternative source models including area and fault (line) sources are considered in the hazard computations. Analyses are initially performed using generic rock and soil conditions considering return periods of 475, 975 and 2475 years. Then, site-specific seismic hazard analyses are made using available local soil conditions. Probabilistic seismic hazard analyses with line sources and local soil models yield significantly different results than area sources and a generic soil model for all return periods. This observation points out the fact that detailed local source and site parameters should be employed in hazard analyses. In summary, numerical results obtained with locally derived input parameters indicate that Istanbul has significant potential for hazard in terms of both local earthquake occurrence and site amplifications.
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https://hdl.handle.net/11511/72882
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Seismic damage assessment based on regional synthetic ground motion dataset: a case study for Erzincan, Turkey
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Estimation of seismic losses is a fundamental step in risk mitigation in urban regions. Structural damage patterns depend on the regional seismic properties and the local building vulnerability. In this study, a framework for seismic damage estimation is proposed where the local building fragilities are modeled based on a set of simulated ground motions in the region of interest. For this purpose, first, ground motion records are simulated for a set of scenario events using stochastic finite-fault methodolo...
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In order to mitigate seismic risk in urban regions, the first task is to identify potential seismic losses in future earthquakes. Seismic loss estimation is an interdisciplinary framework including a wide range of contributions from geophysical and earthquake engineers, physical and economic planners to insurance companies. In this study, a moderate size city in Turkey, namely Erzincan, is modeled completely from geophysical attributes to the built environment. Erzincan city is on the eastern part of the No...
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A. Askan Gündoğan, “SITE-SPECIFIC PROBABILISTIC SEISMIC HAZARD ASSESSMENT ANALYSES IN ZEYTINBURNU, ISTANBUL,” 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/72882.
