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Mauriello, P.
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Mauriello, P.
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- PublicationOpen AccessA physical pattern recognition approach for 2D electromagnetic induction studies(2000-04)
; ; ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy; We present a new tomographic procedure for the analysis of natural source electromagnetic (EM) induction field data collected over any complex 2D buried structure beneath a flat air-earth boundary. The tomography is developed in a pure physical context and the primary goal is the depiction of the space distribution of two occurrence probability functions for the induced electrical charge accumulations on resistivity discontinuities and current channelling inside conductive bodies, respectively. The procedure to obtain tomographic image consists of a scanning operation governed analytically by a set of multiple interference cross-correlations between the observed EM components and the corresponding synthetic components of a pair of elementary charge and dipole. To show the potentiality of the proposed physical tomography, we discuss the results from three 2D synthetic examples.153 514 - PublicationOpen AccessExamples of application of tensorial resistivity probability tomography to architectonic and archaeological targets(2002)
; ; ; ; ;Di Fiore, B.; Dipartimento di Geofisica e Vulcanologia, Università «Federico II», Napoli, Italy ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, Consiglio Nazionale delle Ricerche, Roma, Italy ;Monna, D.; Istituto per le Tecnologie Applicate ai Beni Culturali, Consiglio Nazionale delle Ricerche, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy; ; ; We present the results of the application of the tensor resistivity method to the assessment of the state of conservation of some architectonic features of the S.Giovanni a Carbonara monumental monastery (Naples, Italy) and to the recognition of buried remains in the archaeological site of the roman Port of Claudius at Fiumicino (Rome, Italy). The 3D tomographic approach, based on the concept of resistivity anomaly source occurrence probability, has been used for the analysis of the invariant parameter related to the trace of the determinant of the apparent resistivity tensor.148 280 - PublicationOpen AccessAn integrated magnetotelluric study of the Mt. Etna volcanic structure(2000-04)
; ; ; ; ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy ;Petrillo, Z.; Osservatorio Vesuviano, Ercolano, Napoli, Italy ;Siniscalchi, A.; Dipartimento di Geologia e Geofisica, Università di Bari, Italy; ; ; he results of a magnetotelluric (MT) survey performed at Mt. Etna (Sicily, Italy) are presented and discussed. The MT interpretation is preceded by the description of the data managing strategy used for the estimate of the impedance tensor and the computation of a rotationally invariant parameter. The 1D Bostick inversion of MT soundings located in the Etnean central area highlights the existence of a wide conductive zone in the depth range 15-30 km. Resistivities of a fewW×m are estimated in the southern part of this zone, while resistivities one order of magnitude higher are estimated in the northern part. In the central sector, the MT soundings are characterized by much higher resistivity values suggesting the presence of an E-W directed resistive barrier separating the two conductive deep zones. A two-feeding system is thus hypothesized as an extension of a previous 3D model deduced from regional earthquakes and teleseisms in the depth range 15-25 km. Moreover, the comparison with previous shallow seismic tomographies from local earthquakes within the first 11 km of depth allows us to distinguish inside the upper portion of the resistive barrier a central high velocity zone. This zone can likely be ascribed to a slowly cooled dike tending to become highly fractured at its western and eastern edges. Finally, the impedivity analysis based on the comparison with previous geoelectric dipole soundings allows us to exclude the existence of a permanent magma chamber within the first 5 km of depth and to argue the existence of a shallowplumbing system consisting of a medium-to-low temperature hydrothermally altered environment.270 719 - PublicationOpen AccessAdvanced magnetic visualization of Mt. Vesuvius shallow plumbing system by probability tomography(2002)
; ; ; ;Iuliano, T.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy ;Mauriello, P.; Istituto per Le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy; ; We show the results of the application of a new magnetic probability tomography imaging method to the aeromagnetic dataset collected by AGIP on Mt. Vesuvius in 1978. A magnetic dipole occurrence probability function is defined in such a way as to contain all information about the whole class of equivalent sources compatible with the original survey dataset. An advanced 3D visual system is also applied for the first time to visualise the spacial pattern of the magnetic dipole occurrence probability function. It is shown that in the case of Vesuvius, the shallow plumbing system is characterised by a high probability of occurrence of a dipole at 2 km of depth b.s.l., nearly directed along the present main earth’s magnetic field. This leads to hypothesize that the top terminal portion of the volcanic apparatus is completely filled with magnetised volcanic material.159 395 - PublicationOpen AccessA probability tomography approach to the analysis of potential field data in the Campi Flegrei caldera (Italy)(2001-04)
; ; ; ;Iuliano, T.; Dipartimento di Scienze Fisiche, Università ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università "Federico II", Napoli, ItalyI", Napoli, Italy; ; The results of the application of the 3D probability tomography imaging approach to the study of the Campi Flegrei (CF) caldera are presented and discussed. The tomography approach has been applied to gravity, magnetic and ground deformation data already available in literature. The analysis of the 3D tomographic images is preceded by a brief qualitative interpretation of the original survey maps and by an outline of the probability tomography approach for each geophysical prospecting method. The results derived from the 3D tomographic images are the high occurrence probabilities of both gravity and ground deformation source centres in the CF caldera under the town of Pozzuoli. A Bouguer negative anomaly source centre is highlighted in the depth range 1.6-2 km b.s.l., whereas a positive ground deformation point source, responsible for the bradyseismic crisis of 1982-1984, is estimated at a mean depth of 3-4 km b.s.l. These inferences, combined with the results of a previous analysis of magnetotelluric, dipolar geoelectrical and self-potential data, corroborate the hypothesis that the bradyseismic events in the CF area may be explained by hot fluids vertical advection and subsequent lateral diffusion within a trapped reservoir overlying a magma chamber.163 546 - PublicationOpen AccessExamples of application of electrical tomographies and radar profiling to cultural heritage(2000-04)
; ; ; ; ;Cammarano, F.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy ;Di Fiore, B.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Mauriello, P.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Università «Federico II», Napoli, Italy; ; ; We present the results of an integrated application of the self-potential and resistivity methods to the recognition of buried remains in the archaeological site of Sumhuram (Khor-Rouri, Oman), and of the self-potential, resistivity and radar methods to the assessment of the state of conservation of the Aksum obelisk (Rome, Italy). A tomographic approach based on the concept of anomaly source occurrence probability was used for the analysis of the self-potential and resistivity data. Tomographic imaging provided reliable space patterns of the most probable specific target boundaries and notably improved the information quality of each single geophysical method.252 559 - PublicationOpen AccessExamples of ac resistivity prospecting in archaeological research(1998-08)
; ; ; ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Monna, D.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Bruner, I.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy; ; In this paper we present the results of an alternating current resistivity survey, with a view to future tomographic processing. Two examples are given to evaluate the validity and the resolution of the method. The first in the Sabine Necropolis of Colle del Forno (Montelibretti, Rome), the second in the Etruscan settlement of Poggio Colla (Vicchio, Florence). All the measurements were carried out utilising current up to 512 Hz and a mobile dipole MN along straight lines, having two fixed current probes A and B. It was found that skin effect is uninfluential in the frequency range adopted. Given the absence of natural or artificial disturbances in the signal (e.g. electrode polarization and self potential), it was possible to perform very fast measurements with two operators only. Moreover, the use of a multiple dipole source configuration allows the calculation of the determinant of the apparent resistivity tensor. In the examples shown, this parameter detects the actual position of buried structures independently of the direction of the electric sources.205 221 - PublicationOpen AccessSelf-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas(1997-03)
; ; ; ; ; ; ; ;Di Mai, R.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Mauriello, P.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Patella, D.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Petrillo, Z.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Piscitelli, S.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy ;Siniscalchi, A.; Geomare Sud, Istituto di Geologia Marina del C.N.R., Napoli, Italy ;Veneruso, M.; Dipartimento di Geofisica e Vulcanologia, Università di Napoli «Federico II», Napoli, Italy; ; ; ; ; ; We present the results of self-potential, geoelectric and magnetotelluric studies in Italian active volcanic areas as essential contributions both to structural modeling and to hazard evaluation. On Mt. Etna and Mt. Somma-Vesuvius complexes structural modeling was emphasized due to a lack of global information involving the whole apparatuses, at least from the electrical point of view. Hazard investigation was, instead, investigated with high resolution techniques on the island of Vulcano, where intense unrest phenomena have long been recorded.221 712 - PublicationOpen AccessIntegration of high resolution geophysical methods. Detection of shallow depth bodies of archaeological interest(1998-08)
; ; ; ; ; ; ;Cammarano, F.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Mauriello, P.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Patella, D.; Dipartimento di Scienze Fisiche, Universitá di Napoli ;Piro, S.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Rosso, F.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Versino, L.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy; ; ; ; ; A combined survey using ground penetrating radar, self-potential, geoelectrical and magnetic methods has been carried out to detect near-surface tombs in the archaeological test site of the Sabine Necropolis at Colle del Forno, Rome, Italy. A 2D data acquisition mode has been adopted to obtain a 3D image of the investigated volumes. The multi-methodological approach has not only demonstrated the reliability of each method in delineating the spatial behaviour of the governing parameter, but mainly helped to obtain a detailed physical image closely conforming to the target geometry through the whole set of parameters involved.257 700 - PublicationOpen AccessIntegration of geophysical datasets by a conjoint probability tomography approach: application to Italian active volcanic areas(2008-02)
; ; ;Mauriello, P.; Dipartimento di Scienze e Tecnologie per l’Ambiente ed il Territorio, Università degli Studi del Molise, Campobasso, Italy ;Patella, D.; Dipartimento di Fisica, Università degli Studi di Napoli «Federico II», Napoli, Italy; We expand the theory of probability tomography to the integration of different geophysical datasets. The aim of the new method is to improve the information quality using a conjoint occurrence probability function addressed to highlight the existence of common sources of anomalies. The new method is tested on gravity, magnetic and self-potential datasets collected in the volcanic area of Mt. Vesuvius (Naples), and on gravity and dipole geoelectrical datasets collected in the volcanic area of Mt. Etna (Sicily). The application demonstrates that, from a probabilistic point of view, the integrated analysis can delineate the signature of some important volcanic targets better than the analysis of the tomographic image of each dataset considered separately.291 456