Introduction to the special issue of the Consortium of Organizations for Strong Motion Observation Systems (COSMOS) international guidelines for applying noninvasive geophysical techniques to characterize seismic site conditions

Yong, Alan
Askan Gündoğan, Ayşegül
Cassidy, John
D'Amico, Sebastiano
Parolai, Stefano
Pilz, Marco
Stephenson, William


Evaluation of Site Characterizations and Site Effects of the Ankara Basin Turkey
Koçkar, Mustafa Kerem; Akgün, Haluk (2007-06-28)
The purpose of this study is to assess the in-situ site characteristics and to perform seismic hazard studies of the Upper Pliocene to Pleistocene fluvial and Quaternary alluvial and terrace deposits located towards the west of Ankara. Based on a general engineering geological, geotechnical and seismic characterization of the site, site classification systems were assigned for seismic hazard evaluations. Then, short-period noise recordings of the microtremor measurements at the ground surface have been used...
A Critical and methodological assessment of Zafer Toprak’s historical studies
Yılmaz, Tülay; Ergut, Ferdan; Department of History (2017)
The main goal of this study is to examine Zafer Toprak’s methodological approach to historical studies. Toprak’s work has influenced many areas of academic disciplines such as economic and social history writing. His studies focused especially on the modernization era and the Republican period of Turkey. He stands apart from historians who came before him in respect to his approach toward social and economic life of the late Ottoman era and the early Republican period. His studies on the period of CUP (Comm...
Evaluation of the site effects of the Ankara basin, Turkey
Kockar, M. K.; Akgün, Haluk (2012-08-01)
Recent major earthquakes have explicitly demonstrated that near-surface local site conditions that can generate significant amplifications and spatial variations of earthquake ground motion play a major role in the level of ground shaking and in gathering information on soft soil response. It is therefore highly desirable to develop methods to identify and characterize regions that are prone to this type of site amplification. To determine the subsurface sediment characteristics over a wide area, measuremen...
Evaluation of site effects based on the 1999 Kocaeli and Düzce earthquake events and seismic microzonation of Gölyaka, Düzce, Turkey
YOUSEFI BAVIL, KARIM; Akgün, Haluk; Koçkar, Mustafa Kerem; Department of Geological Engineering (2022-2)
The high seismicity study area situated in a near-fault region in Gölyaka, Düzce, makes the determination of the bedrock geometry more complex, and hence, it makes this area very challenging in terms of a site response study that would aid a seismic hazard assessment. This study developed a basin model to evaluate the site effects in the tectonically controlled and formed Plio-Quaternary fluvial sediments of the Gölyaka region that uniquely falls within the bifurcated near-field fault section of the North A...
A review of inverse methods in seismic site characterization
Gosselin, Jeremy M.; Dosso, Stan E.; Askan Gündoğan, Ayşegül; Wathelet, Marc; Savvaidis, Alexandros; Cassidy, John F. (2022-04-01)
Seismic site characterization attempts to quantify seismic wave behavior at a specific location based on near-surface geophysical properties, for the purpose of mitigating damage caused by earthquakes. In recent years, techniques for estimating near-surface properties for site characterization using geophysical observations recorded at the surface have become an increasingly popular alternative to invasive methods. These observations include surface-wave phenomenology such as dispersion (velocity-frequency ...
Citation Formats
A. Yong et al., “Introduction to the special issue of the Consortium of Organizations for Strong Motion Observation Systems (COSMOS) international guidelines for applying noninvasive geophysical techniques to characterize seismic site conditions,” JOURNAL OF SEISMOLOGY, vol. 26, no. 4, pp. 557–566, 2022, Accessed: 00, 2022. [Online]. Available: