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  • 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring  (6)
  • BSSA  (4)
  • 1
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    Seismic-hazard assessment for a characteristic earthquake scenario: an integrated probabilistic-deterministic method (2006)
    In:  Bulletin of the Seismological Society of America, Roma, Publicazioni dell'Istituto Nazionale di Geofisica, vol. 96, no. 2, pp. 377-391, pp. 2128, (ISBN: 0-12-018847-3)
    Details
    Publication Date: 2006
    Keywords: Seismology ; Earthquake hazard ; Gutenberg-Richter magnitude frequency b-value ; Magnitude ; Seismicity ; PSHA ; DSHA ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 2
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    Kinematic source parameters for the 1989 Loma Prieta earthquake from the nonlinear inversion of accelerograms (2005)
    In:  Bull. Seism. Soc. Am., Münster, 3, vol. 95, no. 3, pp. 981-994, pp. L11308, (ISBN 0-471-26610-8)
    Details
    Publication Date: 2005
    Keywords: Seismology ; Non-linear effects ; Inversion ; Strong motions ; Earthquake ; Source parameters ; Nearfield ; High frequency ... ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 3
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    Simulation of earthquake ground motion and effects on engineering structures during the preeruptive phase of an active volcano (2004)
    In:  Bull. Seism. Soc. Am., Tokyo, Terra Scientific Publishing Company, vol. 94, no. 6, pp. 2213-2221, pp. L07608, (ISBN: 0534351875, 2nd edition)
    Details
    Publication Date: 2004
    Keywords: Seismology ; Modelling ; Earthquake engineering, engineering seismology ; Volcanology ; Gutenberg-Richter magnitude frequency b-value ; Magnitude ; Italy ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 4
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    Inversion of near-source S polarization for parameters of double-couple point sources (1989)
    In:  Bull. Seism. Soc. Am., Paris, Pergamon, vol. 79, no. B6, pp. 1779-1809, pp. 1246
    Details
    Publication Date: 1989
    Keywords: Filter- ; Polarization ; DC source ; Shear waves ; Source parameters ; Fault plane solution, focal mechanism ; BSSA
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    BIBLIOGRAPHY SEISMOLOGY
  • 5
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    Converted phase identification and retrieval of Vp/Vs ratios from move-out reflection analysis: application to the Campi Flegrei caldera (2007)
    Details
    Publication Date: 2017-04-04
    Description: Here, we propose a method for the determination of Vp/Vs ratios in a horizontally layered propagation media using maximization of a coherency function along theoretical travel-times of PS reflected phases. The theoretical travel-times are computed using the information about the propagation media that is extracted by velocity analysis or by topographic analysis performed on the first arrivals. The method is also a valid tool for the identification of the PS phases associated with a fixed seismic reflector, and it is particularly suitable for data that is stored in common mid-point and common conversion point bin- ning; for this kind of data the hypothesis of horizontally and layered media can usually be verified. We applied the method to both simulated and real datasets. The use of the real data that was acquired in the Campi Flegrei caldera (southern Italy) allowed us to estimate a relatively high Vp/Vs ratio (3.5 ± 0.6) for a very shallow layer (maximum depth, 600 m). This hypothesis has been tested by theoretical rock physical modeling of the Vp/Vs ratios as a function of porosity, suggesting that the shallow layer appears to be formed of unconsolidated, water-saturated, volcanic and marine sediments that filled Pozzuoli Bay during the post-caldera activity.
    Description: I.N.G.V.
    Description: Published
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: open
    Keywords: Converted phase identification ; Flegrei caldera ; 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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  • 6
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    Depth and morphology of reflectors from the 2-D non-linear inversion of arrival-time and waveform semblance data: method and applications to synthetic data (2007)
    Details
    Publication Date: 2017-04-04
    Description: We propose a two-dimensional, non-linear method for the inversion of reflected/converted traveltimes and waveform semblance designed to obtain the location and morphology of seismic reflectors in a lateral heterogeneous medium and in any source-to-receiver acquisition lay-out. This method uses a scheme of non-linear optimisation for the determination of the interface parameters where the calculation of the traveltimes is carried out using a finite- difference solver of the Eikonal equation, assuming an a priori known back- ground velocity model. For the search of the optimal interface model, we have used a multiscale approach and the Genetic Algorithm global optimization technique. During the initial stages of inversion, we used the arrival times of the reflection phase to retrieve the interface model that is defined by a small num- ber of parameters. In the successive steps, the inversion is based on the opti- mization of the semblance value determined along the calculated traveltime curves. Errors in the final model parameters and the criteria for the choice of the bestfit model are also estimated from the shape of the semblance function in the model parameter space. The method is tested and validated on a synthe- tic dataset that simulates the acquisition of reflection data in a complex volca- nic structure.
    Description: I.N.G.V.
    Description: Published
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: open
    Keywords: method and applications to synthetic data ; 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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  • 7
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    Metodi e tecnologie per l’early warning sismico (2011)
    Doppiavoce Napoli
    Details
    Publication Date: 2012-02-03
    Description: La rete sismo/accelerometrica e le metodologie di early warning sismico descritte in questo volume costituiscono uno dei più validi risultati della strategia...
    Description: Published
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: reserved
    Keywords: early warning sismico ; 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: book
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  • 8
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    Iterative tomographyc analysis based on automatic refined picking (2008)
    Blackwell publishing
    Details
    Publication Date: 2017-04-04
    Description: The ever-growing size of data sets for active and passive seismic imaging makes the availability of automatic procedures for rapid analysis more and more valuable. Such procedures are especially important for time-critical applications like emergency decisions or re-orienting of ongoing seismic surveys. In this paper a new, iterative scheme for 3D traveltime tomography is presented. The technique, based on a tool originally developed for earthquake data, uses cross-correlation to examine waveform similarity and to adjust arrival times on seismic sections. A preliminary set of reference arrival times is first corrected by the cross-correlation lag and then used to build an initial 3D tomographic velocity model through a standard inversion code; traveltimes calculated from this model are then taken as new reference arrivals and the process of pick adjustment is repeated. The result is a tomographic image, upgraded and refined at each iteration of the procedure. The test performed on the waveform data set recorded during the 2001 SERAPIS active seismic survey in the gulfs of Naples and Pozzuoli (Southern Italy) shows that the 3D iterative tomography scheme produces a velocity image of the structure of the Campi Flegrei caldera which is consistent with the results from previous studies, employing just a fraction of the time needed by a human analyst to identify first breaks.We believe that this technique can be effectively employed for rapid analysis of large data-sets within time-critical or time-dependent tasks and for automatic 4D tomographic investigations.
    Description: Published
    Description: 467–475
    Description: 1.4. TTC - Sorveglianza sismologica delle aree vulcaniche attive
    Description: JCR Journal
    Description: reserved
    Keywords: Iterative Tomographyc ; Automatic picking ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 9
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    Calcolo della magnitudo (2012)
    Doppiavoce
    Details
    Publication Date: 2017-04-04
    Description: XXXXX
    Description: Published
    Description: 185-210
    Description: 4.1. Metodologie sismologiche per l'ingegneria sismica
    Description: restricted
    Keywords: Magnitudo locale ; Magnitudo momento ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book chapter
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  • 10
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    Testing the "PRESTo" Early Warning Algorithm in North-Eastern Italy, Austria and Slovenia: update analysis (2014)
    Details
    Publication Date: 2017-04-04
    Description: Since 2002 OGS (Istituto Nazionale di Oceanografia e di Geofisica Sperimentale) in Udine (Italy), the Agencija Republike Slovenije za Okolje (ARSO) in Ljubljana (Slovenia) and the Zentralanstalt für Meteorologie und Geodynamik (ZAMG) in Vienna (Austria), are collecting, analyzing, archiving and exchanging seismic data in real time. The data exchange has proved to be effective and very useful in case of seismic events at the borders between Italy, Austria and Slovenia, where the poor coverage of individual national seismic networks precluded a precise earthquake location, while the usage of common data from the integrated networks improves significantly the overall capability of real time event detection and rapid characterization in this area. In order to extend the seismic monitoring in North-eastern Italy, Slovenia and Southern Austria, towards earthquake early warning applications, at the end of 2013 OGS, ARSO and ZAMG teamed with the RISSCLab group (http://www.rissclab.unina.it) of the Department of Physics at the University of Naples Federico II in Italy. The collaboration focuses on massive testing on OGS, ARSO and ZAMG data of the EW platform PRESTo (Probabilistic and Evolutionary early warning SysTem) developed by RISSC-Lab (http://www.prestoews.org).
    Description: Published
    Description: Istanbul (Turkey)
    Description: 5T. Sorveglianza sismica e operatività post-terremoto
    Description: open
    Keywords: PRESTo ; Earthquake Early Warning ; Northeastern Italy ; Austria ; Slovenia ; 04. Solid Earth::04.06. Seismology::04.06.06. Surveys, measurements, and monitoring
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: Extended abstract
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