3D Bedrock Structure of Bornova Plain and Its surroundings (İzmir/Western Turkey)

Building a three dimensional model of the active Plio-Quaternary basin of Argostoli (Cephalonia Island, Greece): An integrated geophysical and geological approach

“…More comprehensive studies aiming to construct 3D geological/ geotechnical/ geophysical model have been developed (e.g. Manakou et al, 2010 for the Mygdonian basin in Northern Greece ;Eker et al, 2015, Pamuk et al, 2018Podesta et al, 2019 in Chile).…”

The 30 October 2020 Samos (Eastern Aegean Sea) Earthquake: effects of source rupture, path and local-site conditions on the observed and simulated ground motions

“…To do so we used the site_amp and nrattle computer program, a modi ed version of C. Mueller's program rattle by R. B. Herrmann (part of the SMSIM computer codes of Boore 2003). We prototyped shear-wave velocities and attenuation as a function of depth from those pro les provided by Pamuk et al (2018Pamuk et al ( , 2018b and computed ampli cations in the frequency-domain. In these velocity models, engineering bedrock (V s > 760 m/s) depth changes from 200 to 400 m in the Bornova basin while the seismic bedrock (V s > 3000 m/s) ranges between 1200 to 1400 m. The velocity pro les S2, S3, S5 and the deeper one S4, with greater proximity to the 3519 station, are adopted from Pamuk et al (2018).…”

“…We prototyped shear-wave velocities and attenuation as a function of depth from those pro les provided by Pamuk et al (2018Pamuk et al ( , 2018b and computed ampli cations in the frequency-domain. In these velocity models, engineering bedrock (V s > 760 m/s) depth changes from 200 to 400 m in the Bornova basin while the seismic bedrock (V s > 3000 m/s) ranges between 1200 to 1400 m. The velocity pro les S2, S3, S5 and the deeper one S4, with greater proximity to the 3519 station, are adopted from Pamuk et al (2018). Figure 8a shows adopted 1D prototyped V s -depth pro les (see Figure 5 of Pamuk et al 2018) and Figure 8b shows ampli cations with a vertical incidence wave of geometrical effect calculated using the PPM (continuous lines) and QWL (dashed lines) methods.…”

“…In these velocity models, engineering bedrock (V s > 760 m/s) depth changes from 200 to 400 m in the Bornova basin while the seismic bedrock (V s > 3000 m/s) ranges between 1200 to 1400 m. The velocity pro les S2, S3, S5 and the deeper one S4, with greater proximity to the 3519 station, are adopted from Pamuk et al (2018). Figure 8a shows adopted 1D prototyped V s -depth pro les (see Figure 5 of Pamuk et al 2018) and Figure 8b shows ampli cations with a vertical incidence wave of geometrical effect calculated using the PPM (continuous lines) and QWL (dashed lines) methods. Attenuation effect at the closest sites is included using kappa parameters 0.055 s. As can be seen clearly in Figure 8b, the QWL method underestimates the resonance peaks generated by the large impedance contrasts.…”

Erzurum ve Çevresi Yerel Zemin Etkilerinin SSR ve HVSR Yöntemleri Kullanılarak Araştırılması

“…Deprem-zemin ortak davranış özelliklerinin dinamik koşullar dikkate alınarak araştırılabilmesi için en güvenilir yaklaşım doğrudan deprem verilerinin kullanılmasıdır [6]. Bu çalışmada yerel zemin etkilerinin belirlenmesinde yaygın olarak kullanılan Klasik Spektral Oran (SSR) [6,7] ve Yatay/Düşey Spektral Oran (HVSR) [6,8,[9][10][11][12] yöntemleri kullanılmıştır. Bu motivasyon ile; Erzurum ve çevresinde konumlanmış AFAD (9 adet) ve Atatürk Üniversitesi Deprem Araştırma Merkezi (ATA-DAM) (1 adet) tarafından işletilen toplam 10 adet ivme-ölçer tarafından 2013-2017 yılları arasında en az 3 istasyon tarafında kayıt edilen ve en az 3.5 büyüklüğündeki 17 deprem kullanılmıştır (Tablo 1).…”