caa a22 4500 445846941 CHVBK 20180317145401.0 cr unu---uuuuu 170323e20110601xx s 000 0 eng 10.1007/s10518-011-9254-6 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9254-6 Site effects of the Roio basin, L'Aquila [Elektronische Daten] [E. Bertrand, A.-M. Duval, J. Régnier, R. Azzara, F. Bergamashi, P. Bordoni, F. Cara, G. Cultrera, G. Di Giulio, G. Milana, J. Salichon] During the microzonation studies of the April 6th, 2009 L'Aquila earthquake, we observed local seismic amplifications in the Roio area—a plane separated from L'Aquila city center by mount Luco. Six portable, digital instruments were deployed across the plain from 15 April to mid-May 2009. This array recorded 152 aftershocks. We analyzed the ground motion from these events to determine relative site amplification within the plain and on surrounding ridges. Horizontal over vertical spectral ratio on noise data (HVSRN), aftershock recordings (HVEQ) and standard spectral ratio (SSR) showed amplifications at 1.3 and 4.0Hz on quaternary deposits. Seismic amplifications in the frequency range of 4 and 6Hz were also observed on a carbonate ridge of Colle di Roio, on the northwestern border of the plateau. A small amplification was noticed near the top of mount Luco, another rocky site. Large discrepancies in the amplification levels between methods have been observed for these sites, but the HVSRN, HVEQ and SSR gave similar results at the stations located in the Roio plain. On the rocky sites, the SSR was more reliable than the HVSRN at estimating the transfer function of the site, even if the resonance frequency seemed to be well detected by the latter method. Springer Science+Business Media B.V., 2011 L'Aquila earthquake nationallicence Site effects nationallicence Strong motion nationallicence Micro-tremors nationallicence Spectral ratios nationallicence Bertrand E. CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut Duval A.-M CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut Régnier J. CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut Azzara R. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Bergamashi F. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Bordoni P. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Cara F. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Cultrera G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Di Giulio G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Milana G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut Salichon J. OCA, UMR Géoazur, Sophia-Antipolis, Nice, France aut Bulletin of Earthquake Engineering Springer Netherlands 9/3(2011-06-01), 809-823 1570-761X 9:3<809 2011 9 10518 https://doi.org/10.1007/s10518-011-9254-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9254-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bertrand E. CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut NATIONALLICENCE 700 1- Duval A.-M CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut NATIONALLICENCE 700 1- Régnier J. CETE Méditerranée, LRPC de Nice, 56 Boulevard Stalingrad, 06359, Nice cedex 4, France aut NATIONALLICENCE 700 1- Azzara R. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Bergamashi F. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Bordoni P. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Cara F. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Cultrera G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Di Giulio G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Milana G. Istituto Nazionale di Geofisica e Vulcanologia, Napoli, Italy aut NATIONALLICENCE 700 1- Salichon J. OCA, UMR Géoazur, Sophia-Antipolis, Nice, France aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/3(2011-06-01), 809-823 1570-761X 9:3<809 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer