Development of geotechnical microzonation model for Yenisehir (Bursa, Turkey) located at a seismically active region

Earthquake hazard zonation for urban areas, mostly referred to as seismic microzonation, is the first and important step towards a seismic risk analysis and mitigation strategy in populated regions. Proper understanding of the local subsurface ground conditions is essential for a realistic assessment. Turkey is one of the earthquake prone countries in the World and the lessons particularly drawn from the devastating 17 August 1999 and 12 November 1999 earthquakes of Turkey revealed the importance of microzonation studies. The purpose of this study is to further develop a geotechnical microzonation model regarding the suitability of the residential areas in Yenisehir (Bursa), a rapidly developing settlement area in a seismically active region of Turkey. For this purpose, properties and dynamic behavior of the Quaternary alluvial soils in study area were assessed. Soil classification, soil amplification, natural soil predominant period, resonance phenomena and liquefaction potential of the study area were evaluated using borehole data and microtremor measurements. The raw data obtained from previous studies carried out at Yenisehir were used for these assessments. Geotechnical microzonation map of Yenisehir was produced according to the surface damage due to liquefaction, soil amplification and distance to streams maps; by using Geographical Information Systems (GIS) based Multi-Criteria Decision Analysis. The weight values were assigned to the layers using Analytical Hierarchical Process method by pairwise comparisons. The produced geotechnical microzonation map indicated that the most critical areas are located in the densely populated middle and the southeastern parts of the study area.


A screening procedure for seismic risk assessment in urban building stocks
Sucuoğlu, Haluk; Yakut, Ahmet (SAGE Publications, 2007-05-01)
An effective step for seismic risk mitigation in large urban areas under high seismic risk is to identify the most vulnerable buildings that may sustain significant damage during a future earthquake. Once they are identified properly, existing seismic risks may be reduced either by retrofitting such buildings, or by replacing them with new buildings in view of a particular risk-mitigation planning strategy. A fast and simple seismic risk-assessment procedure for vulnerable urban building stocks is proposed ...
Dynamic soil characterization and site response estimation for Erbaa, Tokat (Turkey)
AKIN, MÜGE; Kramer, Steven L.; Topal, Tamer (2016-07-01)
Site amplification is one of the most important factors controlling damage in urban areas through strong earthquakes. Local site effects play an important role in earthquake-resistant design and should be considered for site response analyses. In this study, ground response analyses in Erbaa, Turkey, a settlement in the North Anatolian Fault Zone, using one-dimensional equivalent linear analysis and empirical approaches based on shear wave velocity profiles are evaluated and compared. The ground response an...
An Interdisciplinary Approach for Regional Seismic Damage Estimation
Askan Gündoğan, Ayşegül; Erberik, Murat Altuğ; Karim Zadeh Naghshineh, Shaghayegh; Yakut, Ahmet (2017-01-09)
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...
Development of a GIS software for evaluating network relibility of lifelines under seismic hazard
Oduncuoğlu, Lütfi; Düzgün, H. Şebnem; Kestel, Sevtap Ayşe; Department of Geodetic and Geographical Information Technologies (2010)
Lifelines are vital networks and it is important that those networks are still be functional after major natural disasters such as earthquakes. The goal of this study is to develop a GIS software for evaluating network reliability of lifelines under seismic hazard. In this study, GIS, statistics and facility management is used together and a GIS software module, which constructs GIS based reliability maps of lifeline networks, is developed by using geoTools. Developed GIS module imports seismic hazard and l...
An evaluation of seismic hazard and potential damage in Gaziantep, Turkey using site specific models for sources, velocity structure and building stock
Karimzadeh, Shaghayegh; Arslan Kelam, Arzu; Yousefibavil, Karim; Akgün, Haluk; Askan Gündoğan, Ayşegül; KOÇKAR, MUSTAFA KEREM; Erberik, Murat Altuğ; Ciftci, Hacer; Pekcan, Onur (2022-03-01)
Assessment of potential seismic risk and losses in urban environments is necessary for several purposes ranging from risk mitigation to city and regional planning. It is well known that loss estimation should be performed within an interdisciplinary setting involving earth sciences and engineering. Field experience from recent events worldwide shows that the spatial variability of seismic damage is due to the combined effects of earthquake source properties, local site conditions and structural characterist...
Citation Formats
Ç. Kolat and M. L. Süzen, “Development of geotechnical microzonation model for Yenisehir (Bursa, Turkey) located at a seismically active region,” ENGINEERING GEOLOGY, pp. 36–53, 2012, Accessed: 00, 2020. [Online]. Available: