A geotechnical earthquake engineering investigation for soils of south eastern coast of Izmir Bay

In this study it is aimed to investigate the soils of southeastern coast of Izmir Bay in terms of geotechnical earthquake engineering. Through this aim the seismicity of the region and critical earthquake source were determined. Izmir Fault has been accepted as ?critical earthquake source? in the frame of RADIUS (1999) Project. The 1977 Izmir Earthquake (M=5.3) has been treated as ?critical earthquake?. Epicenter of this earthquake was quite near to Izmir Fault. Moreover, the 2005 Urla Earthquake (M=5.9) which was close to the Güzelbahçe Fault, has been added to the analysis as the ?critical long distance earthquake?.The idealized soil profiles have been prepared by using the data gained from the site tests and laboratory tests which were made by various firms in the frame of applied researches in the region.One dimensional dynamic soil behaviour analyses for the critical earthquake (Izmir Earthquake, M=5.3) and scenario earthquake (produced from Izmir Earthquake with M=6.5) have been performed by the equivalent linear method via using EERA software.Peak ground acceleration and average shear strength values obtained from the site response analyses for the controlling earthquakes have been used in the evaluation of liquefaction potential of the region. These data were evaluated in the frame of national earthquake regulation.