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Northern Aegean Earthquake (M w=6.9): Observations at three seismic downhole arrays in Istanbul
Abstract The Northern Aegean Earthquake (M w=6.9\M L=6.5) took place on May 24, 2014 between the islands of Gokceada, Turkey and Samothraki, Greece. The tremors were felt as far as in Istanbul, about 300km on the East – Northeast (ENE) side of the epicenter. Kandilli Observatory and Earthquake Research Institute (KOERI) of Bogazici University, Turkey operate three downhole arrays in Istanbul, namely Atakoy (ATK), Fatih (FTH) and Zeytinburnu (ZYT) arrays. In this study, waveforms and site response observed at the KOERI operated seismic downhole arrays during the May 2014 Northern Aegean Earthquake (NAE2014) are analyzed in detail and presented. Evaluation of the acceleration records have shown low amplitude but long period and long duration motions at Istanbul. Furthermore, the analyses of the recordings suggest that V s30 alone may not be a sufficient parameter for the characterization of site amplification.
Highlights Long period and long duration waves generated during 2014 Northern Aegean Earthquake. Velocity contrast of geological and engineering bedrocks result in amplification. V s30 may not be a sufficient parameter in site characterization.
Northern Aegean Earthquake (M w=6.9): Observations at three seismic downhole arrays in Istanbul
Abstract The Northern Aegean Earthquake (M w=6.9\M L=6.5) took place on May 24, 2014 between the islands of Gokceada, Turkey and Samothraki, Greece. The tremors were felt as far as in Istanbul, about 300km on the East – Northeast (ENE) side of the epicenter. Kandilli Observatory and Earthquake Research Institute (KOERI) of Bogazici University, Turkey operate three downhole arrays in Istanbul, namely Atakoy (ATK), Fatih (FTH) and Zeytinburnu (ZYT) arrays. In this study, waveforms and site response observed at the KOERI operated seismic downhole arrays during the May 2014 Northern Aegean Earthquake (NAE2014) are analyzed in detail and presented. Evaluation of the acceleration records have shown low amplitude but long period and long duration motions at Istanbul. Furthermore, the analyses of the recordings suggest that V s30 alone may not be a sufficient parameter for the characterization of site amplification.
Highlights Long period and long duration waves generated during 2014 Northern Aegean Earthquake. Velocity contrast of geological and engineering bedrocks result in amplification. V s30 may not be a sufficient parameter in site characterization.
Northern Aegean Earthquake (M w=6.9): Observations at three seismic downhole arrays in Istanbul
Dikmen, S.U. (author) / Edincliler, A. (author) / Pinar, A. (author)
Soil Dynamics and Earthquake Engineering ; 77 ; 321-336
2015-06-14
16 pages
Article (Journal)
Electronic Resource
English
Northern Aegean Earthquake (Mw=6.9): Observations at three seismic downhole arrays in Istanbul
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