caa a22 4500 445847255 CHVBK 20180317145402.0 cr unu---uuuuu 170323e20111001xx s 000 0 eng 10.1007/s10518-011-9268-0 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9268-0 Kurtuluş Aslı Kandilli Observatory and Earthquake Research Institute, Boğaziçi University, Çengelköy, 34684, Istanbul, Turkey aut Istanbul geotechnical downhole arrays [Elektronische Daten] [Aslı Kurtuluş] Geotechnical downhole arrays that record seismic ground response in near-surface layers are increasingly becoming one of the best sources of information for developing, verifying, and calibrating engineering analyses and design methods. Recently, three geotechnical downhole arrays have been installed in the European side of Istanbul, Turkey with efforts of Kandilli Observatory and Earthquake Research Institute (KOERI). The existing high seismic activity of the region increases the scientific importance of these downhole arrays. Each array is composed of one accelerometer on the ground surface and three or four borehole accelerometers at various depths along the soil profile with the deepest sensor located at the engineering bedrock level (Vs>750m/s). The arrays also provide reference bedrock motion for Rapid Response Network composed of 55 surface instruments operated by KOERI in the west European side of city. An important aspect of this paper is to introduce the recently-completed test sites emphasizing on their potential to generate valuable data for scientific community. Preliminary analysis of the recorded data provides evidence for significant site amplification of ground motion by the surface layers. Comparisons between the recorded and modeled response indicate that Vs30 alone is a poor indicator of the amplification potential emphasizing the importance of site-specific analyses in predicting the ground response as opposed to empirical approaches. Springer Science+Business Media B.V., 2011 Geotechnical downhole arrays nationallicence Earthquake records nationallicence Site amplification nationallicence Soil response nationallicence Bulletin of Earthquake Engineering Springer Netherlands 9/5(2011-10-01), 1443-1461 1570-761X 9:5<1443 2011 9 10518 https://doi.org/10.1007/s10518-011-9268-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9268-0 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Kurtuluş Aslı Kandilli Observatory and Earthquake Research Institute, Boğaziçi University, Çengelköy, 34684, Istanbul, Turkey aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/5(2011-10-01), 1443-1461 1570-761X 9:5<1443 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer