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  • 1
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    The new ITACA monograph: main features and data compiling (2010)
    Details
    Publication Date: 2020-10-26
    Description: The activities carried out within Task 2 aim to collect, organize and synthesize geological, geomorphological, geotechnical and geophysical data for the location site of the Accelerometric National Network (RAN) stations in Italy, managed by the Department of Civil Protection. Knowledge of geological and geomorphological context, and the mechanical and dynamic characteristics of the stations subsoil is an important factor for studies on the attenuation laws and the choice of accelerograms related to the subsoil category provided by seismic code. Having to produce on a large number of sites (over 600), this knowledge have to be rationalized and homogenized so as to arrive at a common and comparable level of information. With this goal has been organized and implemented the activities within Task 2.
    Description: Published
    Description: Roma
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: accelerometric stations ; ground motion ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 2
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    Definition of the standard format to prepare descriptive monographs of ITACA stations (2010)
    Details
    Publication Date: 2020-10-26
    Description: In the previous S6 Project (2004-2007 DPC-INGV Framework Program) a monograph was carried out, that was drawn up for many stations, that were part of the former ENEL accelerometric network. In these monographs all the ENEL documentation about geological information as well as geognostic and geophysical data was included. Knowledge of geological and geomorphological context, and the mechanical and dynamic characteristics of the stations subsoil is fundamental for studies on the attenuation laws and the selection of accelerograms to be used as a seismic input for dynamic analyses for which a classification of the stations subsoil according to the EC8 and national code provisions is necessary. Considering the huge number of sites (over 600), this knowledge have to be rationalized and homogenized so as to arrive at a common and comparable level of information. The station monograph carried out within the past S6 INGV Project had tried to fill the gap in the knowledge of the recording station characteristics, with the advantage of providing a first screening on the quantity and quality of available data; however the collected data included in the monograph turned out to be uneven and incomplete since a robust standard for the collection, homogenization, representation and synthesis of data was not provided. Moreover, expert judgment for assessing quality of data, especially those derived from geotechnical and geophysical tests, was not taken into consideration. This problem has been addressed by Task 2, which has produced a new standard monograph for the ITACA stations. The new release of the station monograph is the first product of the 5 S4 Project (deliverable D3) and can be downloaded from the project website (http://esse4.mi.ingv.it). The new ITACA monograph provides a minimum level of information, homogeneous for all station sites, including multi-disciplinary data to satisfy the needs of different users and duly considers information previously not included. In detail, the new ITACA monograph consists in the following 12 cognitive modules, and various sub-modules.
    Description: Progetto DPC-INGV S4 "Banca dati accelerometrica" - Task 2
    Description: Published
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: Monograph ; Accelerometric stations ; Ground motion data ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 3
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    Ground motion recordings from the MW 6.3 2009 L’Aquila earthquake in Italy and their engineering implications (2012)
    Details
    Publication Date: 2020-10-26
    Description: The 2009 L’Aquila earthquake sequence includes the April 6 Mw 6.3 main shock and triggered events on April 7 and 9, each recorded on a digital network having five stations on the hanging wall of the main shock fault. We describe a geometric source model drawing upon inversions by others. We describe record-specific ground motion data processing that includes the incorporation of static displacements of up to 13 cm (downdrop of hanging wall). The resulting database includes 47, 38, and 31 corrected triaxial recordings from the April 6, 7, and 9 events, respectively. We present site conditions for recording stations, including recent surface wave and borehole geophysics. We demonstrate that the high-frequency data are weaker than expected for normal fault earthquakes of these magnitudes and that the data attenuate with distance at rates generally consistent with modified next generation attenuation (NGA) equations for Italy that were available prior to the event.
    Description: Published
    Description: 317-345
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: JCR Journal
    Description: restricted
    Keywords: Ground motion ; L'Aquila earthquake ; Seismic engineering ; Fault plane ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.09. Waves and wave analysis ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Caratteristiche geologiche e classificazione di sito delle stazioni accelerometriche della RAN ubicate a L'Aquila (2010)
    Details
    Publication Date: 2020-10-26
    Description: L’evento sismico del 6 aprile 2009 è stato registrato da 57 stazioni accelerometriche delle RAN (Rete Accelerometrica Nazionale, gestita dal Dipartimento della Protezione Civile), alcune delle quali ubicate nella città di L’Aquila (stazione AQK) o nella porzione della Valle dell’Aterno a NW della città (AQA, AQF, AQG, AQM, AQP, AQV). Uno degli obiettivi del Progetto S4, finanziato nell’ambito della Convenzione 2007‐ 2009 tra l’Istituto Nazionale di Geofisica e il Dipartimento della Protezione Civile, consiste nella classificazione dei siti di ubicazione delle postazioni accelerometriche utilizzando le categorie di sottosuolo previste nell’EC8‐NTC2008. Nell’ambito del Task 2 è stata rilasciata una versione preliminare di tale classificazione (vers. 1.0), ottenuta soltanto su base litologica, utilizzando una mappa prodotta dall’INGV in un precedente progetto sismologico (Progetto S6 della Convenzione DPC‐INGV 2005‐ 2007). Questa mappa litologica deriva dalla Carta Geologica d’Italia in scala 1:100.000, mediante l’accorpamento in classi delle Formazioni Geologiche secondo un criterio litologico e di età del deposito. Alle varie classi litologiche ottenute è stata quindi attribuita una delle cinque categorie di sottosuolo (A, B, C, D, E) dell’EC8‐ NTC2008. Per le stazioni per le quali sono disponibili i profili di velocità delle onde di taglio VS, la categoria di sottosuolo è stata eventualmente corretta, scegliendo la classificazione ottenuta dal profilo di velocità delle onde di taglio nei primi 30 metri. Nei giorni successivi all’evento del 6 aprile 2009, i ricercatori dell’UR2 e dell’UR6 del Progetto S4, impegnati nel Task 2, hanno effettuato sopralluoghi finalizzati alla verifica della localizzazione geografica, delle condizioni morfologiche e geologiche locali di alcune stazioni di registrazione ubicate nell’area aquilana. Sulla base delle informazioni raccolte e dei dati acquisiti, è stata prodotta una versione aggiornata (vers. 1.1) della classificazione di sito per le suddette stazioni, attualmente disponibile sul sito web del Progetto S4 (http://esse4.mi.ingv.it).
    Description: Progetto DPC-INGV S4: "Banca dati accelerometrica"
    Description: Published
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: Accelerometric stations ; L'Aquila earthquake ; Site classification ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
    Location Call Number Limitation Availability
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  • 5
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    The recording stations of the Italian strong motion network: geological information and site classification (2012)
    Springer
    Details
    Publication Date: 2020-10-26
    Description: One of the main objectives of the ITACA (ITalian ACcelerometric Archive) strong motion database, promoted by the Italian Department of Civil Protection, was to improve the characterization of the recording sites from a geological and geophysical point of view and to provide their seismic classification according to the seismic norms pertinent to Italy, namely the Eurocode 8 and the National Technical Norms for Constructions. A standard format to summarize the available information for the recording stations was first produced, in terms of a technical report dynamically linked to the database, i.e., some of the relevant information is automatically updated when the corresponding fields of the database are modified. Then, an important activity of collection, qualification and synthesis of available data was carried out, especially for stations that recorded the strongest earthquakes in Italy in the last 40 years, and for which a relevant number of studies have been published. In spite of this activity, among the more than 700 strong motion stations present in the ITACA database, only a limited number of them could be characterized by quantitative information on subsurface soil properties. For this reason, a dual seismic site classification criterion was implemented, either based on the standard Vs,30 scheme, or, in the absence of such information, based on an expert opinion supported by shallow geology maps, mostly at 1:100,000 scale, and when available on the H/V ratios calculated on recordings. Owing to the relevance in the Italian geographic and morphological context, a special care was also given to the topographic classification of stations, based on suitable criteria developed within a GIS environment.
    Description: Published
    Description: 1779-1796
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: JCR Journal
    Description: open
    Keywords: ITACA database ; Strong motion station ; General characterization ; Site classification ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 05. General::05.02. Data dissemination::05.02.02. Seismological data ; 05. General::05.09. Miscellaneous::05.09.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    Danni al patrimonio monumentale ed effetti di amplificazione sismica per cause topografiche (2007)
    Details
    Publication Date: 2017-04-04
    Description: After the 2002 Molise earthquake, a wide survey of the damage and the seismic vulnerability of the churches was carried out, using specific forms extensively tested and recently acknowledged at a national scale (G.U. 07/03/2006). This approach has allowed one to compare the observed and the expected medium damage, calculated through vulnerability curves correlated to the specific form used. This comparison has enabled to evaluate inhomogeneous values in some cases, pointing out how the surveyed damage could not be put down just to a structural lack of the building. Studying the sites morphology for the churches located on the ridges, it was observed a damage level always greater than expected. To study the influence of the local amplification phenomena due to the topography, it has been analyzed some churches damaged by the Appennino Abruzzese (1984) and Molise (2002) earthquakes. These churches are located on the ridges top, with slope in-clination alfa≥15°, height H≥30m and characterized by homogeneous lithological subsoil, almost to consider it having an elastic behavior under dynamical stress. Taking into account this hazard increase inside a vulnerability analyses (based on a macroseismic or a mechanical approach), it has been proposed a double approach, validated through local seismic response (RSL) modeling of the ground (estimation of amplification factors and of elastic response spectra) and through the seismic response of the macroelements, damaged by the reference earth-quake (linear and not-linear kinematic analysis). Through the vulnerability analysis based of the macroseismic approach, the influence of the site morphology on the building behavior has been preliminary defined by a vulnerability modifier (deltaVml), that represents an additional parameter to reach the equivalent value between the surveyed and the expected damage. The study of the amplification effects has been performed using the BEM numerical analysis; the results are represented by the amplification factors (Fa), defined as the ratio between the spectral intensity of output and input, considering the range period of 0.1s-0.5s, and the corresponding elas-tic response spectra: they confirm the results of the macroseismic approach. Considering the mechanical approach, two churches have been examined in detail (S Pietro in Vincoli at Castellino del Biferno and S. Michele Arcangelo at Campolieto): the kinematic analyses have been performed applied the calculated amplified and not-amplified response spectra (considering the earthquake 2002) and the design response spectrum. The analyses show that the results obtained applying the calculated amplified response spectrum are better correlated to the surveyed damage of the churches than the results obtained applying the not-amplified response spectrum.
    Description: Published
    Description: Pisa, Italia
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: analisi di vulnerabilità ; amplificazione sismica ; patrimonio monumentale ; scenari di danno ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Conference paper
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  • 7
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    Correlation between local amplification effects and damage mechanisms for monumental buildings (2007)
    Details
    Publication Date: 2017-04-04
    Description: The damage and vulnerability survey of the monumental buildings, damaged by the 2002 earthquake in the Molise Region, has allowed singling out of a correlation between the observed damage of the churches and their morphological site conditions. The vulnerability model connected to the survey methodology provides an evaluation of the expected mean damage. Comparison with the observed damage determined the introduction of a local morphological behaviour modifier, able to take into account the vulnerability increase due to the site effects. In order to validate the previous results, a numerical 2-D analysis of the seismic local response has been performed. In particular, a numerical code, working with boundary elements, has been applied to the analyzed situations. The results, in terms of pseudo-acceleration response spectra and amplification factors, allow one to compare the numerical and the observed analyses. This comparison shows good agreement and allows one to find some correlations between the geometric characteristics of the sites, the values of the amplification coefficients and the damage mechanism activated.
    Description: Published
    Description: Thessaloniki, Greece
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: 4.2. Scenari e mappe di pericolosità sismica e danno
    Description: open
    Keywords: Topographical amplification ; Monumental buildings ; Damage ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 8
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    Schede “geologiche” per la “Valutazione degli effetti locali nei siti di ubicazione di singoli edifici (edilizia ordinaria, strategica e monumentale)” rilevate nelle aree campione della Basilicata e del Molise (2010)
    Details
    Publication Date: 2017-04-04
    Description: L’attività ha previsto il rilevamento delle caratteristiche geologiche, geomorfologiche, geotecniche e geofisiche di 72 siti di ubicazione di chiese danneggiate dai terremoti dell’Irpinia-Basilicata (1980), dell’Abruzzo-Molise (1984) e del Molise (2002). Le informazioni sono state raccolte con la scheda “geologica” di II livello per la “Valutazione degli effetti locali nei siti di ubicazione di singoli edifici (edilizia ordinaria, strategica e monumentale)”, messa a punto nell’ambito dell’Unità Operativa Geologica dell’Unita di Ricerca CNR-ITC L’Aquila del Progetto Reluis – Linea 10.
    Description: Progetto ReLUIS 2005-2008 Unità di Ricerca INGV Roma
    Description: Published
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: Geological survey form ; Site effects ; Seismic hazard ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
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  • 9
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    Effetti di amplificazione topografica osservati sul patrimonio monumentale (2010)
    Details
    Publication Date: 2017-04-04
    Description: La ricerca ha avuto l’obiettivo di indagare gli effetti di amplificazione sismica, per cause topografiche, che possono aver interessato le chiese danneggiate da alcuni terremoti storici italiani. La novità di questo studio consiste nell’aver messo a punto una metodologia di analisi che, partendo dall’osservazione degli effetti del terremoto sull’edificio, confronta il danno osservato ed il danno atteso, calcolato attraverso modelli basati su dati statisticamente affidabili, prevede una fase di rilevo delle caratteristiche geologiche, geomorfologiche, geotecniche e geofisiche dei siti di ubicazione delle chiese, arriva a quantificare, anche attraverso modellazioni numeriche della risposta sismica locale, l’influenza che la morfologia di questi siti può aver avuto nel determinare l’incremento dell’input sismico e conseguentemente del danno osservato.
    Description: Published
    Description: Napoli
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: seismic amplification ; monumental heritage ; topographic effect ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Poster session
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  • 10
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    Schede “geologiche” di I e II livello per la “Valutazione degli effetti locali nei siti di ubicazione di singoli edifici (edilizia ordinaria, strategica e monumentale) (2010)
    Details
    Publication Date: 2017-04-04
    Description: Nell’ambito di un progetto GNDT del 1999 era stata predisposta una scheda di rilevamento che permetteva una raccolta di informazioni geologiche e geomorfologiche per il sito di ubicazione di un bene monumentale (Di Capua et al, 2005a e 2005b). Questo strumento si è rivelato di grande utilità per il rilievo delle caratteristiche geologiche di sito anche in occasione di eventi sismici recenti. Infatti, è stato utilizzato per raccogliere informazioni preliminari sui siti di ubicazione delle chiese danneggiate dal terremoto del Molise (2002), consentendo il rapido confronto delle caratteristiche morfo-litologiche dei diversi siti e agevolando l’analisi delle possibili relazioni tra queste caratteristiche locali e il danneggiamento sismico osservato negli edifici. Nel condurre una campagna di censimento dati è importante poter disporre di uno strumento schedografico affidabile, che consenta una raccolta omogenea delle informazioni disponibili 2/6 e una riduzione dei fattori soggettivi nel rilievo geologico e geomorfologico, che agevoli il tecnico in una descrizione standardizzata dei vari elementi, evitando in questo modo che egli possa dimenticare particolari importanti nella descrizione del sito. Pertanto, nella Linea 10 del progetto Reluis è stato proposto di perseguire l’obiettivo di ridefinire gli strumenti schedografici di tipo “geologico” per valutazioni dei possibili effetti locali nei siti di ubicazione di edifici ordinari, strategici e monumentali.
    Description: Progetto ReLUIS 2005-2008 Unità Operativa Geologica dell'Unità di Ricerca CNR-ITC L'Aquila
    Description: Published
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: open
    Keywords: Survey form ; Site effects ; Seismic hazard ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring ; 04. Solid Earth::04.06. Seismology::04.06.11. Seismic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: report
    Location Call Number Limitation Availability
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