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  • 1
    Electronic Resource
    Electronic Resource
    Seismotectonic outline of South-Eastern Sicily: an evaluation of available options for the earthquake fault rupture scenario (1999)
    Springer
    Journal of seismology 3 (1999), S. 213-233 
    Details
    ISSN: 1573-157X
    Keywords: Sicily ; seismotectonics ; rupture kinematics ; macroseismic intensity ; synthetic intensity ; Tessellation ; Voronoi polygons
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract Seismotectonic information and interpretations available for SE Sicily suggest three groups of possible sources for the M=7.1-7.5 mainshock of 1693 and its strong foreshock: (1) normal faults belonging to the Ibleo Maltese Escarpment (also: Malta Escarpment); (2) normal faults associated with the two adjacent Simeto and Scordia-Lentini structures; (3) a transfer structure between the Sicily Straits rift system and the two grabens to the north. We use a new kinematic model to invert the data sets of macroseismic intensities of the two earthquakes to retrieve information on their sources. For this, we invert point observations, or intensities tessellated with the Voronoi polygons technique, and treat residuals of inversion in the matrix of points, or in the tessellated plane. Our inversions of the regional intensity patterns using this technique show that family N°3 is a good candidate for the foreshock of 9 January, 1693. For the mainshock of 11 January, 1693, an almost perfect synthesis of its intensity IX area was obtained with our model and a source belonging to family N°3. However, all information considered (tsunami included), this earthquake could have been produced either by (3) or by a fault located along the Ibleo-Maltese Escarpment, and tangential to the Augusta and Siracusa promontories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1009859608837
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    Paper (German National Licenses)
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  • 2
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    In Search of New Imaging For Historical Earthquakes: A New Geophysical Survey Offshore Western Calabria (Southern Tyrrhenian Sea, Italy) (2012)
    Istituto Nazionale di Oceanografia e di Geofisica Sperimentale-OGS
    Details
    Publication Date: 2021-04-07
    Description: During the summer of 2010 we carried out a survey to acquire a multidisciplinary dataset within the Gulf of Sant'Eufemia (SE Tyrrhenian sea, Italy), with the aim of studying the active tectonics affecting the region, including that potentially responsible for key, elusive earthquakes such as the to-date unexplained 8 September 1905 (Mw 7 - 7.5) earthquake. The data here analysed highlight the presence of several tectonic and morphologic features characterizing the investigated area. We have recognized the Angitola Channel, a deep and wide canyon showing a straight trend in its coastward segment, and a meandering trend in the seaward segment. Based on morpho-structural elements, we maintain that the Angitola Channel could be tectonically controlled. Moreover, several gravitational instabilities as slumps and collapses affect the flanks of the morpho-structural high, detected offshore Capo Vaticano. Very high resolution seismic data have unveiled the presence of numerous fluid escape features and several mud volcanoes straddling the sector from the coastline to seaward.
    Description: INOGS (RIMA Department) supported the acquisition of the entire dataset.
    Description: Published
    Description: 385-401
    Description: 3.2. Tettonica attiva
    Description: JCR Journal
    Description: restricted
    Keywords: 1905 earthquake ; active tectonics ; mud vulcanoes ; Gulf of Sant’Eufemia ; 04. Solid Earth::04.04. Geology::04.04.04. Marine geology ; 04. Solid Earth::04.04. Geology::04.04.08. Sediments: dating, processes, transport ; 04. Solid Earth::04.04. Geology::04.04.10. Stratigraphy ; 04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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  • 3
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    Nuova formulazione delle procedure per la stima dell’intensità macrosismica da dati epicentrali o da risentimenti in zone vicine (2007)
    Details
    Publication Date: 2017-04-04
    Description: Vengono presentate nuove relazioni empiriche, definite per il territorio italiano, per la stima dell’intensità in un dato sito a partire da informazioni epicentrali o relative a località vicine. Queste relazioni, espresse in forma probabilistica e quindi direttamente utilizzabili per la stima della pericolosità sismica, condividono la stessa formalizzazione e la medesima base informativa. In particolare, sono state seguite tre diverse strategie: le prime due hanno portato alla definizione di una relazione di attenuazione per la stima dell’intensità al sito da dati epicentrali utilizzando una forma parametrica rispettivamente Gaussiana e Binomiale; la terza analisi è stata invece mirata a definire le modalità di “correzione” del valore locale di intensità, dedotto dalle informazioni epicentrali, con dati di risentimenti osservati in località vicine al sito in esame.
    Description: Istituto Nazionale di Geofisica e Vulcanologia
    Description: Published
    Description: 5.1. TTC - Banche dati e metodi macrosismici
    Description: open
    Keywords: attenuation relations ; macroseismic intensity ; Italy ; 04. Solid Earth::04.06. Seismology::04.06.04. Ground motion ; 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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