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Versino, L.
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Versino, L.
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- PublicationOpen AccessPosition and spatial orientation of magnetic bodies from archaeological magnetic surveys(1998-08)
; ; ; ;Piro, S.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy ;Samir, S.; Department of Geology, Faculty of Science, Zagazig University, Zagazig, Egypt ;Versino, L.; Istituto per le Tecnologie Applicate ai Beni Culturali, CNR, Roma, Italy; ; For the last twenty years magnetic surveys have frequently been applied in archaeological prospection. Among the different processing techniques that can be applied to the magnetic data, we studied the possibility for delineating the position and the spatial orientation of shallow depth magnetic anomalous bodies. The approach namely cross-correlation filter (or matched filter) has been adopted. At first, theoretical magnetic anomalies of total magnetic field, of its components and the vertical gradient of these, due to three-dimensional bodies, oriented S-N, E-W and NW-SE, were calculated. These synthetic bodies were considered a sum of many elementary prisms. Field measurements were simulated adding a noise component with different signal-to-noise ratio on the theoretical anomalies. In order to improve signal-to-noise ratio and to locate and delineate the orientation of the anomalous bodies a bidimensional cross-correlation technique was applied. Different synthetic anomalies, due to bodies with different dimensions, depths, susceptibility contrasts and geomagnetic parameters were used, as operators, to apply the cross-correlation technique. The efficiency of the method was improved using a normalised cross-correlation of the field data.139 683 - 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 AccessGeological survey in the archaeological area of Selinunte(1995-11)
; ; ;Piro, S.; Istituto per le Tecnologie Applicate ai Beni Culturali, C.N.R., Monterotondo Stazione, Roma, Italy ;Versino, L.; Istituto per le Tecnologie Applicate ai Beni Culturali, C.N.R., Monterotondo Stazione, Roma, Italy; 146 529 - PublicationOpen AccessExperimental tests for characterization of GPR antenna patterns(1994-11)
; ; ; ; ;Pettinelli, E.; Dipartimento 37, Area Geofisica, Università “La Sapienza” Roma, Italy ;Pierdicca, N.; Dipartimento di Ingegneria Elettronica, Università “La Sapienza” Roma, ltaly ;Piro, S.; Istituto per le Tecnologie Applicate ai Beni Culturali, C.N.R., Monterotondo Stazione, Roma, ltaly ;Versino, L.; Istituto per le Tecnologie Applicate ai Beni Culturali, C.N.R., Monterotondo Stazione, Roma, ltaly; ; ; Detection and location of buried structures using the electromagnetic impulsive methodologies (GPR) require the study of the spatial distribution of energy irradiated by an antenna into the ground and the mechanisms of wave propagation and scattering from relevant targets. Evaluation of the difference in wave field distribution in the ground with respect to free space can provide some useful indications on the propagation of the Geo-radar signal in the ground and the spatial resolution capability of the GPR method. For this reason, a research group, involving “La Sapienza” University, Rome and the National Research Council began, during 1992, to perform studies on antenna radiation pattern, the propagation and scattering phenomena of GPR. This paper presents the experimental set up and the obtained results on the antenna radiation pattern.178 254