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Lombardo, S.
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Lombardo, S.
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- PublicationOpen AccessVLF prospecting: abservations about field experiments(1994-11)
; ; ; ;Bozzo, E.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Lombardo, S.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Merlanti, F.; Dipartimento di Scienze della Terra, Università di Genova, Italy; ; 200 614 - PublicationOpen AccessGeophysical studies applied to near-surface karst structures: the dolines(1996-01)
; ; ; ;Bozzo, E.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Lombardo, S.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Merlanti, F.; Dipartimento di Scienze della Terra, Università di Genova, Italy; ; The formation of dolines is a very common near-surface karst phenomenon which is widespread and evident throughout most of Italy. In this study different geophysical methods have been applied to doline-like structures in the volcaniclastic section of the Alps in order to define their main morpho-structural characteristics. An integrated analysis of the geophysical data was also carried out to ascertain the quality and the resolution obtained through these geophysical methods and more in general, to evaluate their applicability to areas displaying features which are similar to those currently investigated. The fundamental differences found in different dolines are related to the geometries of the contact between the sublayer and the infill and to the mineralogy of the latter. From a geophysical standpoint the contact represents a discontinuity between materials characterized by different geophysical properties, whereas the infill shows properties which vary according to their composition and texture.208 420 - PublicationOpen AccessGeoelectric and electromagnetic measurements within an organized archaeological framework: the Marzabotto example(1994-11)
; ; ; ; ;Bozzo, E.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Lombardo, S.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Merlanti, F.; Dipartimento di Scienze della Terra, Università di Genova, Italy ;Pavan, M.; Dipartimento di Scienze della Terra, Università di Genova, Italy; ; ; Geophysical prospecting was Performed in the Etruscan settlement of Marzabotto, near Bologna (Italy), to find shallow anthropic structures within an almost homogeneous environment. This paper describes some results of the geoelectric and electromagnetic VLF methods used. Non-standard geoelectric devices, such as the tripotential, twin-probe and the Offset-Wermer methods, were applied. The set of results was compared to classical dipolar sections. The Offset-Wenner device was useful for detecting vertically striking structures. Conversely, the electromagnetic VLF techniques are not suitable for investigating structures with a negligible contrast of conductivity with the environment. Prospecting data generated a general pattern of anomalies and some were confirmed by excavation samples, showing walIs, floors, water wells and other remains of urban structures.205 377