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  • 1
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    Seismic hazard assessment at Mt. Vesuvius: Maximum expected magnitude (2007)
    Elsevier
    Details
    Publication Date: 2017-04-04
    Description: This paper deals with the problem of seismicity at Mt. Vesuvius with a view to providing an estimation of the maximum expected earthquake. Integrated analysis of both historical and current seismicity as well as the geological conditions of Vesuvius and the surrounding areas show that seismogenetic structures may fall within the crater axis and at the boundaries of the volcanic complex. While activation of the whole seismogenetic volume detected by seismicity in the past 30 years would indicate a total seismic moment of Mo = 7.1E+ 15 Nm for a magnitude M = 4.5, knowledge of the area's geological structure suggests faulting surfaces of about 32 km2 with an associated magnitude of M = 5.4. The areas of maximum expected damage differ according to the orientation of the hypothesized structure. Analysis of geological and geophysical data and the damage associated to the AD 62 earthquake shows that the prevailing directions in the faulting planes are NE–SW in the eastern sector of the volcanic complex, and roughly WNW–ESE in the southern part of the volcano along the coast. Comparison of instrumental seismicity and historical data reveals two significantly different energy levels: a lower earthquake level with Mmax = 4.5, corresponding to current seismicity and that which accompanied volcanic activity in the eruptive period from 1631–1944; an upper level with Mmax = 5.4, represented by the AD 62 earthquake. The two levels correspond to two stress states and different seismogenetic structures.
    Description: Published
    Description: 139-149
    Description: 3.6. Fisica del vulcanismo
    Description: 3.10. Sismologia storica e archeosismologia
    Description: 4.3. TTC - Scenari di pericolosità vulcanica
    Description: 5.1. TTC - Banche dati e metodi macrosismici
    Description: JCR Journal
    Description: reserved
    Keywords: Mt. Vesuvius ; seismic hazard ; historical seismicity ; 04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.08. Volcanology::04.08.08. Volcanic risk
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 2
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    Management of Historical Seismic Data Using GIS: The Island of Ischia (Southern Italy) (2006)
    Kluwer Academic Publishers
    Details
    Publication Date: 2017-04-04
    Description: This paper presents the results of the use of Geographic Information Systems (GIS) in managing information on the effects of earthquakes in historical times on the island of Ischia. The unpublished sources on the Casamicciola earthquake of 28 July 1883 and the extensive bibliography documenting the island’s seismicity from 1228 showed the need to proceed towards a type of data storage that would also allow management of the same data. Application of GIS techniques allowed us to insert, extract, handle, manage and analyse the data for the zoning of seismic damage on the island of Ischia. The end-product consists of information layers, such as maps of isoseismals, the damage, and hazard involved, as well as numerical tables associated to maps. The study was developed using GIS Arc-View 3.2 software (ESRI) and is structured in thematic vectorial levels and rasters. The overlapping themes constitute a cartographic data base of the island. The damaged sites are located on a map at a scale of 1:10,000, with all the information on the 1883 earthquake (total number of houses, number of collapsed houses, collapsed or damaged rooms, photographs, plans of buildings, etc.) being associated to each site. The GIS is structured in such a way as to be able to be integrated with further georeferenced data and with other databases. It is thus able to provide support both for in-depth analyses of the dynamic processes on the island and extend the assessment to other natural risks (volcanic, landslides, flooding, etc.).
    Description: Published
    Description: 379–393
    Description: partially_open
    Keywords: Historical seismicity ; GIS ; seismic hazard ; island of Ischia ; 04. Solid Earth::04.06. Seismology::04.06.05. Historical seismology ; 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology ; 04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
    Format: 436 bytes
    Format: 503030 bytes
    Format: text/html
    Format: application/pdf
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