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  • 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous  (17)
  • 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous
  • Elsevier Science Limited  (16)
  • Istituto Nazionale di Geofisica e Vulcanologia  (6)
  • Nature Publishing Group  (2)
  • American Chemical Society
  • 2020-2023
  • 2010-2014  (24)
  • 1990-1994
  • 1945-1949
Collection
Keywords
Publisher
Years
  • 2020-2023
  • 2010-2014  (24)
  • 1990-1994
  • 1945-1949
  • 2015-2019  (4)
Year
  • 1
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    Engineering design earthquakes from multimodal hazard disaggregation (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2021-06-21
    Description: To define reference structural actions, engineers practicing earthquake resistant design are required by codes to account for ground motion likely to threaten the site of interest and also for pertinent seismic source features. In most of the cases, while the former issue is addressed assigning a mandatory design response spectrum, the latter is left unsolved. However, in the case that the design spectrum is derived from probabilistic seismic hazard analysis, disaggregation may be helpful, allowing to identify the earthquakes having the largest contribution to the hazard for the spectral ordinates of interest. Such information may also be useful to engineers in better defining the design scenario for the structure, e.g., in record selection for nonlinear seismic structural analysis. On the other hand, disaggregation results change with the spectral ordinate and return period, and more than a single event may dominate the hazard, especially if multiple sources affect the hazard at the site. This work discusses identification of engineering design earthquakes referring, as an example, to the Italian case. The considered hazard refers to the exceedance of peak ground acceleration and 1s spectral acceleration with four return periods between 50 and 2475 year. It is discussed how, for most of the Italian sites, more than a design earthquake exists, because of the modeling of seismic sources. Furthermore, it is explained how and why these change with the limit state and the dynamic properties of the structure. Finally, it is illustrated how these concepts may be easily included in engineering practice complementing design hazard maps and effectively enhancing definition of design seismic actions with relatively small effort.
    Description: Published
    Description: 1212–1231
    Description: JCR Journal
    Description: restricted
    Keywords: Engineering design ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    GEOSIS: dall’Earthquake Report al webGIS (2011)
    Istituto Nazionale di Geofisica e Vulcanologia
    Details
    Publication Date: 2017-04-04
    Description: Experience using ESRI Geodatabase allowed to centralize in one place the many spatial, geological and seismological data contained in the databases produced in recent years by INGV and other institutions. Inspired by the USGS reports made to characterize the most important earthquakes, it was thought to create synthesis and quick reference tools of this information in relation to a seismic event that occurred on Italian territory. The result is the idea of "framing" the location of an earthquake not only in its territorial context, but extending it to other useful information derived from INGV databases and studies. The aim of GEOSIS Earthquake Report is precisely to frame a seismic event in 5 topics into a A3 cartography report: territorial framework, seismic classification, seismic hazards, historical seismicity, recent seismic activity. The utility of Earthquake Report has been highlighted especially during a seismic emergency as a tool for quick summary and easy to read of the different seismological and seismotectonic characteristics of the area affected by the earthquake. Just at those situations, however, has been pointed out the weak point of this report: their static nature. In fact it is coming out of the need to have an application that could dynamically be updated during a seismic sequence and which provides the user the ability to create custom scenarios. It was then developed GEOSIS web, the evolution of GEOSIS Earthquake Reports on the Web. GEOSIS web turns the cartography report into a webGIS application that allows users to create the 5 default views, or create different scenarios with the layers of geographic database. In addition GEOSIS web is not centered on a single seismic event but it has the opportunity to manage the last 20 events recorded by the National Seismic Network with magnitude (ML) greater than or equal to 2.0, updated in near real time.
    Description: Published
    Description: 1-45
    Description: 5.5. TTC - Sistema Informativo Territoriale
    Description: N/A or not JCR
    Description: open
    Keywords: GIS ; ARCGIS SERVER ; WEBGIS seismicity ; Earthquake Report ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Seismicity and velocity structures along the south-Alpine thrust front of the Venetian Alps (NE-Italy) (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2017-04-03
    Description: In this paper we show the seismicity and velocity structure of a segment of the Alpine retro-belt front along the continental collision margin of the Venetian Alps (NE Italy). Our goal is to gain insight on the buried structures and deep fault geometry in a “silent” area, i.e., an area with poor instrumental seismicity but high potential for future earthquakes, as indicated by historical earthquakes (1695 Me = 6.7 Asolo and 1936 Ms = 5.8 Bosco del Cansiglio). Local earthquakes recorded by a dense temporary seismic network are used to compute 3-D Vp and Vp/Vs tomographic images, yielding well resolved images of the upper crust underneath the south-Alpine front. We show the presence of two main distinct high Vp S-verging thrust units, the innermost coincides with the piedmont hill and the outermost is buried under a thick pile of sediments in the Po plain. Background seismicity and Vp/Vs anomalies, interpreted as cracked fluid-filled volumes, suggest that the NE portion of the outermost blind thrust and its oblique/lateral ramps may be a zone of high fluid pressure prone to future earthquakes. Three-dimensional focal mechanisms show compressive and transpressive solutions, in agreement with the tectonic setting, stress field maps and geodetic observations. The bulk of the microseismicity is clustered in two different areas, both in correspondence of inherited lateral ramps of the thrust system. Tomographic images highlight the influence of the paleogeographic setting in the tectonic style and seismic activity of the region.
    Description: Published
    Description: 37-48
    Description: JCR Journal
    Description: restricted
    Keywords: seismicity ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 4
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    Geodetic strain rate and earthquake size: new clues for seismic hazard studies (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2017-04-04
    Description: Earthquakes deliver in few seconds the elastic energy accumulated in hundreds of years. Where and when will be the next earthquake remains a difficult task due to the chaotic behaviour of seismicity and the present lack of available tools to measure the threshold of the crustal strength. However, the analysis of the background strain rate in Italy and the comparison with seismicity shows that larger earthquakes occur with higher probability in areas of lower strain rate. We present a statistical study in which a relationship linking the earthquake size (magnitude) and the total strain rate (SR) is found. We combine the information provided by the Gutenberg–Richter law (GR) of earthquake occurrence and the probability density distribution of SR in the Italian area. Following a Bayesian approach, we found a simple family of exponential decrease curves describing the probability that an event of a given size occurs within a given class of SR. This approach relies on the evidence that elastic energy accumulates in those areas where faults are locked and the SR is lower. Therefore, in tectonically active areas, SR lows are more prone to release larger amount of energy with respect to adjacent zones characterised by higher strain rates. The SR map of Italy, compared with 5 years seismicity supports this result and may become a powerful tool for identifying the areas more prone to the next earthquakes.
    Description: Published
    Description: 67-75
    Description: 3.1. Fisica dei terremoti
    Description: JCR Journal
    Description: restricted
    Keywords: Strain rate ; Magnitude ; Gutenberg–Richter law ; Bayesian analysis ; Seismic hazard ; Italian area ; L’ Aquila Emilia earthquakes ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 5
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    A pilot GIS database of active faults of Mt. Etna (Sicily): A tool for integrated hazard evaluation (2012)
    Elsevier Science Limited
    In:  Supplementary data associated with this article can be found in the online version, at http://dx.doi.org/10.1016/j.jvolgeores.2012.08. 013.
    Details
    Publication Date: 2017-04-04
    Description: A pilot GIS-based system has been implemented for the assessment and analysis of hazard related to active faults affecting the eastern and southern flanks of Mt. Etna. The system structure was developed in ArcGis® environment and consists of different thematic datasets that include spatially-referenced arc-features and associated database. Arc-type features, georeferenced into WGS84 Ellipsoid UTM zone 33 Projection, represent the five main fault systems that develop in the analysed region. The backbone of the GIS-based system is constituted by the large amount of information which was collected from the literature and then stored and properly geocoded in a digital database. This consists of thirty five alpha-numeric fields which include all fault parameters available from literature such us location, kinematics, landform, slip rate, etc. Although the system has been implemented according to the most common procedures used by GIS developer, the architecture and content of the database represent a pilot backbone for digital storing of fault parameters, providing a powerful tool in modelling hazard related to the active tectonics of Mt. Etna. The database collects, organises and shares all scientific currently available information about the active faults of the volcano. Furthermore, thanks to the strong effort spent on defining the fields of the database, the structure proposed in this paper is open to the collection of further data coming from future improvements in the knowledge of the fault systems. By layering additional user-specific geographic information and managing the proposed database (topological querying) a great diversity of hazard and vulnerability maps can be produced by the user. This is a proposal of a backbone for a comprehensive geographical database of fault systems, universally applicable to other sites.
    Description: Published
    Description: 170-186
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 3.2. Tettonica attiva
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: 5.5. TTC - Sistema Informativo Territoriale
    Description: JCR Journal
    Description: reserved
    Keywords: GIS-based system ; Hazard assessment ; Volcano-tectonics ; Flank dynamics ; Georeferenced arc-features ; Active fault database ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.06. Rheology, friction, and structure of fault zones ; 04. Solid Earth::04.04. Geology::04.04.09. Structural geology ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.02. Geodynamics ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques ; 05. General::05.08. Risk::05.08.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 6
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    Limited overlap between the seismic gap and coseismic slip of the great 2010 Chile earthquake (2011)
    Nature Publishing Group
    Details
    Publication Date: 2017-04-04
    Description: The MW 8.8 mega-thrust earthquake and tsunami that occurred on February 27, 2010, offshore Maule region, Chile, was not unexpected. A clearly identified seismic gap existed in an area where tectonic loading has been accumulating since the great 1835 earthquake experienced and described by Darwin during the voyage of the Beagle. Here we jointly invert tsunami and geodetic data (InSAR, GPS, land-level changes), to derive a robust model for the co-seismic slip distribution and induced co-seismic stress changes, and compare them to past earthquakes and the pre-seismic locking distribution. We aim to assess if the Maule earthquake has filled the Darwin gap, decreasing the probability of a future shock . We find that the main slip patch is located to the north of the gap, overlapping the rupture zone of the MW 8.0 1928 earthquake, and that a secondary concentration of slip occurred to the south; the Darwin gap was only partially filled and a zone of high pre-seismic locking remains unbroken. This observation is not consistent with the assumption that distributions of seismic rupture might be correlated with pre-seismic locking, potentially allowing the anticipation of slip distributions in seismic gaps. Moreover, increased stress on this unbroken patch might have increased the probability of another major to great earthquake there in the near future.
    Description: Published
    Description: 173-177
    Description: 3.1. Fisica dei terremoti
    Description: 4.2. TTC - Modelli per la stima della pericolosità sismica a scala nazionale
    Description: JCR Journal
    Description: restricted
    Keywords: Source process ; Chile ; Tsunami ; Joint Inversion ; Seismic Gap ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous ; 04. Solid Earth::04.07. Tectonophysics::04.07.05. Stress ; 04. Solid Earth::04.07. Tectonophysics::04.07.06. Subduction related processes ; 05. General::05.01. Computational geophysics::05.01.03. Inverse methods
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 7
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    Vesuvius: Earthquakes from 1600 up to the 1631 eruption (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2017-04-03
    Description: his study examines the seismicity of Vesuvius in the decades leading up to the great eruption of 16th December 1631. The period 1600–1631 is analyzed with the aims to point out any long-term seismic precursor of the eruption. The historical research has focused on contemporary Neapolitan memoirs and a large screening of diplomatic correspondence from the main Italian courts of the age (Florence, Mantua, Parma, Venice and the Vatican). Information was gathered on 18 earthquakes that were felt in Naples between 1601 and 1630. These data were listed with the sequence of 34 shocks that took place in November and December 1631, that preceded the beginning of the eruption. The 52 seismic events that have been highlighted overall are unknown in the parametric catalogues of Italian historical seismicity and 17 are unknown even in the scientific literature. The authors' view is that it makes little sense to talk of one single previous seismic precursor in this case, given the frequent seismic sequences and tremors noted by contemporaries from January 1616 onwards. The present state of knowledge suggests that seismic activity is a strong, early and persistent warning sign of an eruption of Vesuvius, of the same type as that of December 1631.
    Description: Published
    Description: 267-272
    Description: JCR Journal
    Description: restricted
    Keywords: Vesuvius ; 04. Solid Earth::04.06. Seismology::04.06.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 8
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    EDURISK e sapere tecnico | 2002 -2011 (2013)
    Istituto Nazionale di Geofisica e Vulcanologia
    Details
    Publication Date: 2017-04-04
    Description: Summary of the seismic risk education activities carried out within the projects edurisk 2002 to 2011, addressed to students of vocational schools, their families and to an adult audience. The information, mostly of a technical nature, introduces concepts of vulnerability and esposition as factors on which act to reduce the level of risk
    Description: Edursik project
    Description: Published
    Description: 29-31
    Description: 5.9. Formazione e informazione
    Description: N/A or not JCR
    Description: open
    Keywords: rischio ; informazione ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
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  • 9
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    Sintesi dei lavori del workshop EDURISK 2002 – 2011 | 10 anni di progetti di educazione al rischio (2013)
    Istituto Nazionale di Geofisica e Vulcanologia
    Details
    Publication Date: 2017-04-04
    Description: Summary of the seismic risk education activities carried out within the projects Edurisk from 2002 to 2011, addressed to students (of primary and secondary schools), teachers and adults. Cases of pre-event and post-events activity are illustarted
    Description: Published
    Description: 5.9. Formazione e informazione
    Description: open
    Keywords: edurisk ; risk ; educational ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: book
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  • 10
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    Defining high-detail hazard maps by a cellular automata approach: application to Mount Etna (Italy) (2011)
    Istituto Nazionale di Geofisica e Vulcanologia
    Details
    Publication Date: 2017-04-04
    Description: The individuation of areas that are more likely to be affected by new events in volcanic regions is of fundamental relevance for the mitigation of the possible consequences, both in terms of loss of human life and material properties. Here, we describe a methodology for defining flexible high-detail lava-hazard maps and a technique for the validation of the results obtained. The methodology relies on: (i) an accurate analysis of the past behavior of the volcano; (ii) a new version of the SCIARA model for lava-flow simulation (based on the macroscopic cellular automata paradigm); and (iii) high-performance parallel computing for increasing computational efficiency. The new release of the SCIARA model introduces a Bingham-like rheology as part of the minimization algorithm of the differences for the determination of outflows from a generic cell, and an improved approach to lava cooling. The method is here applied to Mount Etna, the most active volcano in Europe, and applications to landuse planning and hazard mitigation are presented.
    Description: This study was sponsored by the Italian National Civil Defence Department and the Istituto Nazionale di Geofisica e Vulcanologia (INGV), project V3_6/09 "V3_6 – Etna".
    Description: Published
    Description: 568-578
    Description: 1.5. TTC - Sorveglianza dell'attività eruttiva dei vulcani
    Description: 3.5. Geologia e storia dei vulcani ed evoluzione dei magmi
    Description: 3.6. Fisica del vulcanismo
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: JCR Journal
    Description: open
    Keywords: volcanic risk ; cellular automata ; Algorithms and implementation ; Statistical analysis ; Data processing ; 04. Solid Earth::04.01. Earth Interior::04.01.99. General or miscellaneous ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.99. General or miscellaneous ; 04. Solid Earth::04.08. Volcanology::04.08.03. Magmas ; 04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring ; 04. Solid Earth::04.08. Volcanology::04.08.07. Instruments and techniques ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk ; 05. General::05.01. Computational geophysics::05.01.99. General or miscellaneous ; 05. General::05.01. Computational geophysics::05.01.01. Data processing ; 05. General::05.01. Computational geophysics::05.01.02. Cellular automata, fuzzy logic, genetic alghoritms, neural networks ; 05. General::05.01. Computational geophysics::05.01.04. Statistical analysis ; 05. General::05.02. Data dissemination::05.02.99. General or miscellaneous ; 05. General::05.02. Data dissemination::05.02.03. Volcanic eruptions ; 05. General::05.08. Risk::05.08.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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