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  • 1
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    Numerical modeling of the 13 December 1990 fIMfR 5.8 East Sicily earthquake at the Catania accelerometric station (2005)
    In:  Bull. Seism. Soc. Am., Luxembourg, Conseil de l'Europe, vol. 95, no. 1, pp. 241-251, pp. B12408, (ISSN: 1340-4202)
    Details
    Publication Date: 2005
    Keywords: Seismology ; Earthquake ; Strong motions ; Italy ; Modelling ; Synthetic seismograms ; Spectral element method ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Heterogeneous formulations of elastodynamic equations and finite-difference schemes (1995)
    In:  Geophys. J. Int., Taipei, 3-4, vol. 120, no. 6, pp. 663-676, pp. 2548, (ISSN: 1340-4202)
    Details
    Publication Date: 1995
    Keywords: Synthetic seismograms ; Modelling ; Finite difference method ; Inhomogeneity ; GJI ; Zahradnik
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    2-D spectral element simulations of destructive ground shaking in Catania (Italy) (1999)
    In:  J. of Seismology, Stockholm, Wissenschaftliche Buchgesellschaft, vol. 3, no. 6, pp. 289-309, pp. 1397, (ISSN: 1340-4202)
    Details
    Publication Date: 1999
    Keywords: Modelling ; Synthetic seismograms ; Two-dimensional ; Modelling ; Peak ground acceleration ; Spectral element method ; JOSE ; SRICHWALSKI
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Calcolo deterministico del moto di riferimento a Fabriano (1999)
    Osservatorio Geofisico Sperimentale, Trieste, 32 pp.
    In:  report to Consiglio Nazionale delle Ricerche, Gruppo Nazionale per la Difesa dai Terremoti about Progetto Esecutivo 1998, Sub-Obbietivo 6A4: Progetto di microzonazione Umbria-Marche, Kobe, Dec. 6-11, 1993, Osservatorio Geofisico Sperimentale, Trieste, 32 pp., vol. 10, no. Rel. OGS-5/99/GDL-3 dd. 19.3.1999, pp. 241-244, (ISBN 3-933346-037)
    Details
    Publication Date: 1999
    Keywords: Site amplification ; Earthquake engineering, engineering seismology ; noksp
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    The Ferrara thrust earthquakes of May-June 2012: preliminary site response analysis at the sites of the OGS temporary network (2012)
    Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Details
    Publication Date: 2012-10-18
    Description: Following the Ml 5.9 earthquake that struck the Emilia area in northern Italy on May 20, 2012, at 02:03:53 UTC, and in co-operation with the personnel of the Municipality of Ferrara and the University of Ferrara, a team of seismologists of the Istituto Nazionale di Oceanografia e Geofisica Sperimentale (OGS; National Institute of Oceanography and Experimental Geophysics) deployed a temporary seismographic network. This consisted of eight portable seismological stations, to record the local earthquakes that occurred during the seismic sequence. The OGS intervention was integrated into the broader action of the emergency response to the earthquake sequence, which was promoted by the National Department of Civil Protection and the Istituto Nazionale di Geofisica e Vulcanologia (INGV; National Institute of Geophysics and Volcanology) [Moretti et al. 2012, this volume]. The aim of the OGS intervention was on the one hand to extend the seismic monitoring area towards the East, to include Ferrara and its surroundings, to be ready in case of migration of the seismicity in that direction, and on the other hand to evaluate the seismic response at the instrumented sites. Some days later, another team of researchers coordinated by the University of Potenza carried out some investigations at a number of sites, and in particular at three of the sites instrumented by the OGS temporary network. […]  
    Print ISSN: 1593-5213
    Topics: Geosciences
    Published by Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 6
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    Current challenges in monitoring, discrimination and management of induced seismicity related to underground industrial activities: a European perspective (2017)
    Wiley
    Details
    Publication Date: 2017-03-18
    Description: Due to the deep socio-economic implications, induced seismicity is a timely and increasingly relevant topic of interest for the general public. Cases of induced seismicity have a global distribution and involve a large number of industrial operations, with many documented cases from as far back to the beginning of the 20th century. However, the sparse and fragmented documentation available makes difficult to have a clear picture on our understanding of the physical phenomenon and consequently in our ability to mitigate the risk associated with induced seismicity. This review presents a unified and concise summary of the still open questions related to monitoring, discrimination and management of induced seismicity in the European context and, when possible, provides potential answers. We further discuss selected critical European cases of induced seismicity, which led to the suspension or reduction of the related industrial activities.
    Print ISSN: 8755-1209
    Topics: Geosciences
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 7
    Electronic Resource
    Electronic Resource
    Heterogeneous formulations of elastodynamic equations and finite-difference schemes (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Geophysical journal international 120 (1995), S. 0 
    Details
    ISSN: 1365-246X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: The heterogeneous formulation of differential equations is justified in this paper. This means that the material discontinuities, properly introduced into the elastodynamic equations of motion, manifest themselves as (delta function) localized body forces, serving for the traction continuity. The traction-continuity conditions, formulated separately from the differential equations of motion, are not needed. This result is independent of the method used to solve the differential equations, and encourages attempts to construct heterogeneous formulations of finite-difference equations. A particular heterogeneous finite-difference scheme can be justified by the Taylor expansion method. In general some of the heterogeneous schemes are justified for a given problem, but not all; some of the heterogeneous schemes even violate the traction-continuity condition. A recent elastic scheme (PS2) has been theoretically justified for the problems characterized by a free surface and/or an interface parallel to grid-line direction, including a discontinuity reaching the surface. Synthetic seismograms computed with the PS2 scheme have been compared with the exact solution and the higher-order spectral-element solution. Attention has been focused on the Rayleigh and interface waves. A good agreement between the compared solutions has been found for all presented test models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-246X.1995.tb01844.x
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    2-D spectral element simulations of destructive ground shaking in Catania (Italy) (1999)
    Springer
    Journal of seismology 3 (1999), S. 289-309 
    Details
    ISSN: 1573-157X
    Keywords: numerical modelling ; peak ground acceleration ; seismichazard ; seismic hazard scenario ; spectral element method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract This study wants to estimate the strong ground motion in the municipal area of Catania (Italy) for a catastrophic earthquake scenario. It is part of a larger research program funded by the National Research Council – National Group for the Defence Against Earthquakes (CNR-GNDT), The Catania Project, devoted to evaluating the seismic risk of a highly urbanised area, such as that of Catania, located in a seismically active region. The reference earthquake simulates the catastrophic event (M ≈ 7.2) of 1693. The ground shaking is computed solving the 2-D full-wave equation by the Chebyshev spectral element method (SPEM). Particular emphasis is given to the construction of realistic structural models, also including the finest local detail, obtained from the geophysical, geological and geotechnical data available. Simulations are performed for several sources, to account for both a change in source position and orientation, and the finite extension of the fault along its dip. Synthetic seismograms and peak ground acceleration (PGA) envelopes, calculated at the surface for four transects across the Catania area, constitute the main result of this study which can be used for practical purposes. Simulations show that ground motion is strongly influenced by both source characteristics and crustal structure. We have found that PGA values range between 0.1 g and 0.5 g, although particular site conditions strongly affect these values locally. For example, the frequencies of maximum interest in civil engineering (1.5–4 Hz) are enhanced selectively by a thick portion of surface sediments (i.e., 30–100 m for an average shear wave velocity of 500–600 m/s). An unexpected feature is the appreciable increase of PGA at large epicentral distances, which contradicts classical attenuation relations. All the results are examined through an analysis of the propagating wavefield.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009838325266
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  • 9
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    Far-Source Long-Period Displacement Response Spectra in the Po and Venetian Plains (Italy) from 3D Wavefield Simulations (2011)
    Seismological Society of America (SSA)
    Details
    Publication Date: 2011-06-01
    Description: Design-elastic displacement spectra for seismic codes and zoning studies of seismic hazard for long-period structures are becoming of utmost importance in modern earthquake engineering. The increase of displacement-based design approaches, together with the availability of good-quality digital strong-motion data, allow the creation of reliable spectral shapes for seismic design of up to 10 s. Nevertheless, to characterize the site amplification effects during large levels of shaking, additional studies are needed, especially in deep sedimentary basins and plains that can be strongly excited by large amplitude long-period waves. Data within deep basins is rare because accelerometric seismic networks are normally deployed on rock or stiff soil, and modeling of waveforms is hence necessary for bridging this gap. Focusing on the numerical modeling of the 3D wavefield in 1D flat layered and 3D structures in the Po and Venetian plains (northern Italy) and on earthquakes with magnitudes M 6.6 and hypocentral distances greater than 50 km, in this study we (1) estimate the displacement response spectra (DRS) from 1 to 10 s in the Po and Venetian plains, (2) compare the DRS from numerical simulations using flat layered and heterogeneous 3D models against the currently available uniform-hazard DRS for Italy, and (3) evaluate the influence of deep sediments on DRS shape and thus on seismic codes. Finally, 1D- and 3D-simulated DRS are compared with DRS obtained from recordings in the Kanto basin where similar long-period displacement is observed.
    Print ISSN: 0037-1106
    Electronic ISSN: 1943-3573
    Topics: Geosciences , Physics
    Published by Seismological Society of America (SSA)
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  • 10
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    GITANES: A MATLAB Package for Estimation of Site Spectral Amplification with the Generalized Inversion Technique (2017)
    Seismological Society of America
    Details
    Publication Date: 2017-12-20
    Print ISSN: 0895-0695
    Electronic ISSN: 1938-2057
    Topics: Geosciences
    Published by Seismological Society of America
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