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Viganò, Daniele
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- PublicationOpen AccessThe SHARE European Earthquake Catalogue (SHEEC) 1000-1899(2013)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Stucchi, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Rovida, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Gomez Capera, A. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Alexandre, P.; Observatoire Royal de Belgique ;Camelbeeck, T.; Observatoire Royal de Belgique ;Demircioglu, M. B.; Bogazici University, Kandilli Observatory and Earthquake Research Institute ;Gasperini, P.; Università di Bologna, Dipartimento di Fisica ;Kouskouna, V.; University of Athens, Department of Geophysics and Geothermics ;Musson, R. M.W.; British Geological Survey ;Radulian, M.; National Institute for Earth Physics ;Sesetyan, K.; Bogazici University, Kandilli Observatory and Earthquake Research Institute ;Vilanova, S.; Institute for Structural Engineering, Territory and Construction ;Baumont, D.; Institut de Radioprotection et de Sûréte Nucléaire ;Bungum, H.; NORSAR ;Faeh, D.; Swiss Seismological Service ;Lenhardt, W.; Zentralanstalt für Meteorologie und Geodynamik ;Makropoulos, K.; University of Athens, Department of Geophysics and Geothermics ;Martinez Solares, J. M.; Instituto Geografico Nacional ;Scotti, O.; Institut de Radioprotection et de Sûréte Nucléaire ;Živčić, M.; Agencija Republike Slovenije za okolje ;Albini, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Batllo, J.; Universidade de Lisboa, Faculdade de Ciências ;Papaioannou, C.; Institute for Engineering Seismology and Earthquake Engineering ;Tatevossian, R.; Russian Academy of Sciences, Institute of Physics of the Earth ;Locati, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Meletti, C.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Giardini, D.; Swiss Seismological Service; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; In the frame of the European Commission project “Seismic Hazard Harmonization in Europe” (SHARE), aiming at harmonizing seismic hazard at a European scale, the compilation of a homogeneous, European parametric earthquake catalogue was planned. The goal was to be achieved by considering the most updated historical dataset and assessing homogenous magnitudes, with support from several institutions. This paper describes the SHARE European Earthquake Catalogue (SHEEC), which covers the time-window 1000-1899. It strongly relies on the experience of the European Commission project “Network of Research Infrastructures for European Seismology” (NERIES), a module of which was dedicated to create the European “Archive of Historical Earthquake Data” (AHEAD) and to establish methodologies to homogenously derive earthquake parameters from macroseismic data. AHEAD has supplied the final earthquake list, obtained after sorting duplications out and eliminating many fake events, and the most updated historical dataset. Macroseismic data points (MDPs) provided by AHEAD have been processed with updated, repeatable procedures, regionally calibrated against a set of recent, instrumental earthquakes, to obtain earthquake parameters. From the same data, a set of epicentral intensity-to-magnitude relations has been derived, with the aim of providing another set of homogeneous Mw estimates. Then, a strategy focussed on maximizing the homogeneity of the final epicentral location and Mw, has been adopted. Special care has been devoted also to supply location and Mw uncertainty. The paper focuses on the procedure adopted for the compilation of SHEEC and briefly comments on the achieved results.1316 252 - PublicationRestrictedThe Global Earthquake History(2014)
; ; ; ; ; ; ;Albini, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Musson, R. M. W.; BGS, Edinburgh ;Rovida, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Locati, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Gomez Capera, A. A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, D.; Global Earthquake Model-GEM; ; ; ; ; The study of earthquakes from historical sources, or historical seismology, was considered an early priority for the Global Earthquake Model (GEM) project, which commissioned a study of historical seismicity at a global scale. This was “The Global Earthquake History” (GEH) project, led jointly by INGV (Milano, Italy) and BGS (UK). GEH was structured around three complementary deliverables: archive, catalogue, and the web infrastructure designed to store both archive and catalogue. The Global Historical Earthquake Archive (GHEA) provides a complete account of the global situation in historical seismology for large earthquakes. From GHEA, the Global Historical Earthquake Catalogue (GHEC v1.0) was derived: a world catalogue of earthquakes for the period 1000-1903, with magnitude 7 Mw and over. Though much remains to be done, the data here presented show that the compilation of both Archive and Catalogue contribute to an improved understanding of the Global Earthquake History.1248 39 - PublicationUnknownThe determination of earthquake location and magnitude from macroseismic data in Europe(2015)
; ; ; ; ; ;Gómez Capera, Augusto Antonio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Rovida, Andrea; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Gasperini, Paolo ;Stucchi, Massimiliano; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, Daniele; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia; ; ;; This paper describes how the earthquake parameters of historical earthquakes have been determined in Europe from macroseismic data by means of the so-called “Boxer” method, in the frame of the European Commission 2009-2012 Project SHARE (Seismic Hazard Harmonization in Europe). The problems related to the assessment of magnitude are described with more detail; the methodological issues are developed with special reference to the “Stable Continental Region”. The paper first describes how the coefficients of the Boxer method are determined in five tectonic regions of the European area from the relevant calibration data sets, and discusses the problems dealt with while performing this task. Then it describes how the results have been checked against data different from those used in the previous phase. Finally, the application of the new coefficients to nearly a thousand of European earthquakes before 1900 is described. Stressing that, for the first time in Europe, homogeneous results have been obtained at such a large scale, the final part of the paper is devoted to analyse such results, with special reference to the general trends and to some case-histories.616 6 - PublicationOpen AccessFrom macroseismic intensity data to the earthquake parameters(2010-09-06)
; ; ; ; ;Locati, Mario; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Cassera, Andrea; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, Daniele; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Gomez Capera, Augusto Antonio; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia; ; ; Two tools have been developed within the European Archive of Historical EArthquake Data (AHEAD) in order to process and analyse roughly 270.000 Macroseismic Intensity Data-points (MDPs) related to circa 7000 earthquakes European-wise and spanning more than a 1000 years.The first addressed task was to investigate interactively on a map such data, to better evaluate the quality and differences between datasets describing the same earthquake. A tool called MIDOP (Macroseismic Data Online Publisher) has been created: by simply choosing a list of earthquakes and their corresponding MDPs, a complete self-sustained website can be created, ready to be published on the web. It offers an intuitive control panel for maps and tables customisation and it offers the possibility to generate places seismic histories. No external data-sources are required while presenting maps and the resulting websites can be browsed also locally. A series of problems related to the AHEAD environment have been taken into account while designing the tool: 1) macroseismic intensity data standardisation of formats among European institutions, 2) support the growth of locally developed macroseismic data-centres and 3) help publishing the earthquake data on the web with a specifically designed web-mapping tool.The second task to be addressed was to process such amount of MDPs in order to obtain earthquake parameters (epicentral location and magnitude) according to available and published methods. Three parameterization methods were identified: Boxer, Bakun & Wentworth and MEEP, each coming with its Windows pre-compiled line command executable. The tool, called “Parametrizator”, is able to batch process the input MDPs and present the result on maps using MIDOP.207 496 - PublicationOpen AccessThe building up process of a macroseismic intensity database(2012-06-12)
; ; ;Mario, Locati; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Daniele, Viganò; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia; Since the late nineties Italy has a well-established tradition of making available on the Internet a national macroseismic intensity database. The last updated version called DBMI11 was released in December 2011. By using this public database everyone can obtain information about the effects caused in a populated place by an earthquake of the past. A huge quantity of well organised historical information can be effortlessly retrieved and used as the background information of the seismic hazard assessment. Other similar activities are carried out by the same DBMI working group: the creation of a transnational European database called AHEAD (Archive of historical Earthquake Data) and the related effort of supporting the growth of other European intensity databases (Catalonia, Spain, Portugal, Greece and UK) and, at world-wide scale, the support for the "Global Earthquake History", the GEM (Global Earthquake Model) global component. This presentation will describe how these databases are built, how they are structured and which tools are used both for managing data and for the Internet publication.135 504 - PublicationRestrictedIn Search of the Predecessors of the 2011 Van (Turkey) earthquake(2012)
; ; ; ; ; ; ; ;Albini, P.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Demircioglu, M. B.; BU, KOERI, Istanbul (Turkey) ;Locati, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Rovida, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Sesetyan, K.; BU, KOERI, Istanbul (Turkey) ;Stucchi, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Viganò, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia; ; ; ; ; ; [The Mw 7.2 earthquake of 23 October 2011 struck an area of Eastern Anatolia with a long historical record and a long earthquake history. The earthquake occurred in a region of rather complex tectonics resulting from the collision of the Arabian and Eurasian continental plates. The 23 October 2011 earthquake caused heavy damage to Van and several towns and villages around Lake Van, in the districts of Van and Ercis. It was followed by several aftershocks and another strong event (Mw 5.7) that occurred on 9 November 2011, causing further damage and casualties. Though the seismicity of the area is described by some regional parametric earthquake catalogs and has been the subject of several studies, no earthquake with a magnitude equivalent to the 2011 one is reported by the catalog in the area of the 2011 earthquake; so, apparently, there are no predecessors of this earthquake. However, two questions arise: a) could some events located close to Van have been underestimated or mislocated, as frequently happens with poorly known events?, and b) are there gaps in the earthquake history of the Van region? As for the first question, we have not found earthquakes which could, in principle, be underestimated and/or mislocated by the catalog and that could be re-located in the area of the October 2011 earthquake with a comparable magnitude. The earthquake history shows gaps between 1275 and 1646, and later between 1715 and 1834, gaps which have further investigated on the occasion of the preparation of this paper. In conclusion, nothing can be said about earthquakes in the time-window before 1646 in the region east of Lake Van. After that year, no prominent candidate earthquake appears as a possible twin of the 23 October 2011 event.]818 27 - PublicationRestrictedI terremoti del maggio 2012 nel contesto della sismicità dell’area(2012-12)
; ; ; ; ; ; ;Camassi, R.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia ;Rovida, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Locati, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Castelli, V.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italia ;Viganò, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia ;Stucchi, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Milano-Pavia, Milano, Italia; ; ; ; ; Lungi dall'essere «poco sismico» o addirittura «non sismico», come è stata definita quasi unanimemente dai media, il settore della pianura padana orientale in cui sono localizzati i terremoti del maggio 2012 è caratterizzata da una storia sismica plurisecolare e piuttosto ben conosciuta, grazie a una stagione di studi di sismologia storica avviata da quasi un trentennio. Questo articolo ricostruisce il contesto storicosismologico della sequenza.631 35