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Simini, M.
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- PublicationOpen AccessObservations of short period seismic scattered waves by small seismic arrays(1997-10)
; ; ; ; ;Del Pezzo, E.; Dipartimento di Fisica, Università di Salerno, Italy ;La Rocca, M.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Maresca, R.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Simini, M.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy; ; ; The most recent observations of well correlated seismic phases in the high frequency coda of local earthquakes recorded throughout the world are reported. In particular the main results, obtained on two active volcanoes, Teide and Deception, using small array are described. The ZLC (Zero Lag Cross-correlation) method and polarization analysis have been applied to the data in order to distinguish the main phases in the recorded seismograms and their azimuths and apparent velocities. The results obtained at the Teide volcano demonstrate that the uncorrelated part of the seismograms may be produced by multiple scattering from randomly distributed heterogeneity, while the well correlated part, showing SH type polarization or the possible presence of Rayleigh surface waves, may be generated by single scattering by strong scatterers. At the Deception Volcano strong scattering, strongly focused in a precise direction, is deduced from the data. In that case, all the coda radiation is composed of surface waves.160 143 - PublicationRestrictedLocation of the Source and Shallow Velocity Model Deduced from the Explosion Quakes Recorded by Two Seismic Antennas at Stromboli Volcano(2000)
; ; ; ; ; ; ; ;La Rocca, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Petrosino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Saccorotti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia ;Simini, M.; Università di Salerno ;Ibanez, J.; Instituto Andaluz de Geofisica ;Almendros, J.; Instituto Andaluz de Geofisica ;Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia; ; ; ; ; ; The seismic wavefield associated to the ongoing eruptive activity at Stromboli vvolcano (Italy) is investigated using data from two small-aperture, short period seismic arrays deployed on the northern and western flanks, located at about 1.7 km from the active craters.173 29 - PublicationOpen AccessTwin digital short period seismic Array Experiment at Stromboli Volcano(1998)
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ;Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;La Rocca, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Petrosino, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Grozea, B.; Università di Salerno ;Maritato, L.; Università di Salerno ;Saccorotti, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Pisa, Pisa, Italia ;Simini, M.; Università di Salerno ;Ibanez, J.; Instituto Andaluz de Geofisica ;Alguacil, G.; Instituto Andaluz de Geofisica ;Carmona, E.; Instituto Andaluz de Geofisica ;Abril, M.; Instituto Andaluz de Geofisica ;Almendros, J.; Instituto Andaluz de Geofisica ;Ortiz, R.; Museo Naccional de Ciencias Naturales de Madrid ;Garcia, A.; Museo Naccional de Ciencias Naturales de Madrid ;Pingue, F.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Esposito, T.; Osservatorio Vesuviano; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Two small arrays composed by short period (1 Hz) digital seismic stations, with an aperture of approximately 400 meters, were set up at Stromboli volcano (one at semaforo Labronzo, the other at Ginostra- Timpone del Fuoco) with the purpose of the spatial location of the high frequency source of the explosion quakes. About 75 explosion-quakes were recorded at both arrays, and constitute the available data base. We have planned to apply the zero-lag cross-correlation technique to the whole data set in order to obtain back-azimuth and apparent slowness of the coherent seismic phases. A preliminary analysis for both arrays show that the predominant back-azimuth for the first phase is oriented in the direction of , but not strictly coincident to, the crater area. Moreover some back-scattered arrivals are quite evident in the seismogram.184 365 - PublicationRestrictedShallow structure of Mt. Vesuvius volcano, Italy, from seismic array analysis(1997-02)
; ; ; ; ;De Luca, G.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione CNT, Roma, Italia ;Scarpa, R.; University of Salerno ;Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Simini, M.; University of Naples; ; ; SPAC method applied to data from a small aperture seismic array on Mt. Vesuvius gives the shallow velocity model.292 26 - PublicationOpen AccessThe EduSeis Project: Three years of educational experiences on seismology(2005-09)
; ; ; ; ; ;Cantore, L.; Dipartimento di Scienze Fisiche, Università di Napoli Federico II, Italy ;Zollo, A.; Dipartimento di Scienze Fisiche, Università di Napoli Federico II, Italy ;Bobbio, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Di Martino, F.; Fondazione IDIS Città della Scienza, Napoli, Italy ;Simini, M.; I.T.I. R. Elia Castellammare di Stabia, Napoli, Italy; ; ; ; The Educational Seismology Project (EduSeis) is a scientific and educational effort which involves high schools, scientific museums and research institutes in four different European countries: France, Italy, Portugal, and Germany. The Italian program, which is part of an existing cooperation between the Science Centre Città della Scienza of Naples and the University of Naples has the aim of developing modern and advanced educational tools in Earth Sciences, using seismology as a vehicle for scientific learning. As a result of this program, a network of digital seismographs has been installed in a number of high schools in Central and Southern Italy. The purpose of this network is to make advanced, research-level instruments and data analysis tools available to schools and to increase the students attention to observations of earth phenomena and earth science in general. For increasing the student and public awareness on seismic risk has been realized a school lab (SISMALAB), a new interactive exhibit opened to museum visitors and high school classes. Two related editorial activities started aimed at the diffusion of the EduSeis project: an information booklet entitled “Earthquakes – How, where, when, why…”., and a bimestrial electronic Newsletter (in Italian, http://www.cittadellascienza.it/sismalab/).276 1721 - PublicationRestrictedThe EduSeis project in Italy: an educational tool for training and increasing awarness on the seismic risk(2003-09)
; ; ; ; ; ; ;Cantore, L.; Dipartimento di Scienze Fisiche Universià di Napoli Federico II ;Bobbio, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia ;Di Martino, F.; Fondazione IDIS Città della Scienza, Napoli ;Petrillo, A.; Dipartimento di Scienze Fisiche Universià di Napoli Federico IID ;Simini, M.; Dipartimento di Scienze Fisiche Universià di Napoli Federico II ;Zollo, A.; Dipartimento di Scienze Fisiche Universià di Napoli Federico II; ; ; ; ; The Educational Seismology Project (EduSeis) is a scientific and educational effort which involves high schools, scientific museums and research institutes in four different European countries: France, Italy, Portugal, and Germany. This paper discusses the Italian program, which is part of an existing cooperation between the Science Centre Città della Scienza of Naples and the University of Naples. The program has the aim of developing modern and advanced educational tools in Earth Sciences, using seismology as a vehicle for scientific learning. In a region characterized by an elevated seismic and volcanic risk, the EduSeis project has a remarkable impact on the prevention of the seismic risk. This effect is achieved in two ways: by involving students, teachers and their familes in schools and by using museum to educate the general public. Although there is a risk of strong earthquakes in the Mediterranean area, the amount of information and awakening to the seismic prevention are insufficient by comparison with analogous initiatives undertaken in other seismic regions in the world. The EduSeis project in Italy has recently received financial support from the Department of Civil Protection through the National Group for Earthquake Defense of INGV (Istituto Nazionale di Geofisica e Vulcanologia). As a result of this program, a network of digital seismographs has been installed in a number of high schools in Central and Southern Italy. The purpose of this network is to make advanced, research-level instruments and data analysis tools available to schools and to increase the attention of student’s attention to observations of earth phenomena and earth science in general. Products from the network are available to the schools hosting the EduSeis seismograph, the Science Centre's visitors and to the general public via an Internet web site (http://eduseis.na.infn.it). The project has several educational, scientific and social aims. The main educational objectives are to expose and teach students (and teachers) to internet-based networking and data transfer as well as the acquisition, analysis and interpretation of seismological data. For example, students gain practice in long-term measurements and analysis of time variable parameters for experiments. An important task associated with these objectives is to develop, upgrade and test educational modules on seismology and other disciplines (electronics, physics, informatics) using informatics and web-oriented tools. In addition, the project offers the opportunity for students and researchers from different countries to exchange programs and ideas. The main scientific objective is the creation of a school-based earthquake waveform database, which may eventually be integrated with the national and international databases. An additional objective is the development and testing of hardware and software components of an advanced, but low-cost seismic acquisition system, according to the general requirements of the best quality/cost ratio as constrained by school budgets. Among the social objectives we would like to establish a direct link between the scientific community and schools and general public; to increase the student and public awareness on seismic risk; and to use seismological observations as a vehicle to learn about the dynamics and evolution of the Earth.452 64