caa a22 4500 445846852 CHVBK 20180317145401.0 cr unu---uuuuu 170323e20111201xx s 000 0 eng 10.1007/s10518-011-9282-2 doi (NATIONALLICENCE)springer-10.1007/s10518-011-9282-2 Seismic characterization and monitoring of Fucino Basin (Central Italy) [Elektronische Daten] [F. Cara, G. Di Giulio, G. Cavinato, D. Famiani, G. Milana] The Fucino basin (Central Italy) is one of the largest intramountain alluvial plain in the Apennines range. It has a tectonic origin related to the presence of important systems of faults located in its northern and eastern edges. Some of these faults are still active and capable of generating strong seismic events. Site effects related to the soft soils filling the basin can be very important. In this paper we show the preliminary results of a seismic network installed in the Fucino area in order to collect information about site amplification effects and geometry of the basin. We analyze ambient seismic vibrations and recordings of about 150 local earthquakes mainly related to the seismic sequence of the April 6th 2009 Mw 6.3 L'Aquila event. Moreover the strongest events of L'Aquila sequence were analyzed at the three permanent strong-motion stations operating in the area. Using standard spectral techniques we investigate the variation of resonance frequencies within the basin. The ground motion recorded in the Fucino plain is mainly characterized by strong energy at low-frequencies (f<1 Hz) affecting both horizontal and vertical components. This is particularly evident for stations deployed in correspondence of very thick deposits of sedimentary filling, where a significant increase of ground-motion amplitude and duration is likely caused by locally generated surface waves. The amplification at low-frequencies (<1Hz) on the horizontal components can reach up a factor of 10 in comparison to nearby stiff sites. However, we found evidences of seismic amplification phenomena also for stiff sites surrounding the basin, including stations of the Italian strong motion network. The independent geological information and the shallow shear-velocity profiles available for the basin can be combined with resonance frequencies for deriving representative geological sections to be used as base for future numerical 2D-3D modeling of the basin. Springer Science+Business Media B.V., 2011 Fucino Basin nationallicence Resonance frequency nationallicence Site amplification nationallicence Seismic monitoring nationallicence Strong motion stations nationallicence Cara F. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut Di Giulio G. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut Cavinato G. Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche, Via Salaria Km 29,300, 00016, Monterotondo Stazione, Rome, Italy aut Famiani D. Dipartimento per lo Studio del Territorio e delle sue Risorse, Università degli studi di Genova, Corso Europa 26, 16132, Genoa, Italy aut Milana G. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut Bulletin of Earthquake Engineering Springer Netherlands 9/6(2011-12-01), 1961-1985 1570-761X 9:6<1961 2011 9 10518 https://doi.org/10.1007/s10518-011-9282-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10518-011-9282-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cara F. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut NATIONALLICENCE 700 1- Di Giulio G. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut NATIONALLICENCE 700 1- Cavinato G. Istituto di Geologia Ambientale e Geoingegneria, Consiglio Nazionale delle Ricerche, Via Salaria Km 29,300, 00016, Monterotondo Stazione, Rome, Italy aut NATIONALLICENCE 700 1- Famiani D. Dipartimento per lo Studio del Territorio e delle sue Risorse, Università degli studi di Genova, Corso Europa 26, 16132, Genoa, Italy aut NATIONALLICENCE 700 1- Milana G. Sezione Sismologia e Tettonofisica, Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605, 00143, Rome, Italy aut NATIONALLICENCE 773 0- Bulletin of Earthquake Engineering Springer Netherlands 9/6(2011-12-01), 1961-1985 1570-761X 9:6<1961 2011 9 10518 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer