Journal Title
Title of Journal: Bull Eng Geol Environ
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Abbravation: Bulletin of Engineering Geology and the Environment
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Publisher
Springer Berlin Heidelberg
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Authors: Ömer Aydan Halil Kumsar
Publish Date: 2014/10/11
Volume: 74, Issue: 3, Pages: 1037-1055
Abstract
The western Aegean region of Turkey is highly populated the centrallylocated city of Izmir is the third largest city in Turkey This region has suffered very large earthquakes in the past of which one of the most devastating occurred in 1928 Some areas are particularly prone to severe ground liquefaction This study is concerned with the earthquake potential of the region focusing on a possible earthquake faulting mechanism and its associated characteristics based on historical and current regional seismicity tectonics crustal deformation and geoarchaeological evidence The first part of the study presents a faulting mechanism tectonics recurrences and the fundamental characteristics of existing faults and past earthquakes Then the characteristics of potential earthquakes are discussed in light of evaluations of recent crustal deformation and empirical relations developed for Turkey by the first author The final part presents geotechnical aspects including liquefaction and the characteristics of strong ground motions recorded in the region such as spectral acceleration attenuation of maximum ground acceleration and velocity Furthermore their possible implications are discussed in view of current Turkish seismic design codes The faulting mechanism of regional earthquakes has indicated that the classical horstgraben concept does not explain the earthquake mechanism in the region of concern The magnitude of earthquakes inferred from the length and type of known active faults may be up to 77 Based on an evaluation of crustal deformation in the region the highest disturbing stress and mean stress concentration with a compressive character occurs in close proximity to İzmir The spectral accelerations generally exceed those of Turkish seismic design codes The liquefaction potential in areas of alluvial quaternary deposits is particularly high and is one of the major geotechnical issues in light of historical records and evaluations presented in this manuscript
Keywords:
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- Landslide investigations in the northwest section of the lesser Khingan range in China using combined HDR and GPR methods
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- Stabilisation of old lignite pit dumps in Eastern Germany
- Significance of outward dipping strata in argillaceous limestones in the area of the Three Gorges reservoir, China
- Slope stability problems of the weak rocks in the Asarsuyu pass of the Anatolian motorway
- Landslide susceptibility zonation study using remote sensing and GIS technology in the Ken-Betwa River Link area, India
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