In past decades, magnetic surveying had become popular as one of the\ud
most effective techniques supporting archaeological prospecting. This is possible\ud
because the existence of susceptibility contrasts between the cover soil and several\ud
buried finds often causes detectable anomalies. More recently, great advances were\ud
made in signal enhancement and boundary analysis of potential field anomalies,\ud
thanks to methods allowing a suitable differentiation of the field without making\ud
the process unstable. New three-dimensional (3D) imaging techniques provided an\ud
estimate of the magnetization distribution within the subsoil by means of highresolution\ud
images of the source distribution. Most of these methods are fast and\ud
reliable in the presence of shallow and compact sources, just as in the case of\ud
the sources usually occurring in archaeological prospecting. Nevertheless, great\ud
effort was spent by the scientific community to overcome serious problems causing\ud
low signal-to-noise ratio in the measurements. This chapter provides a step-bystep\ud
description of technical solutions adopted to improve the quality of data and\ud
to perform a better interpretation of the magnetic anomalies usually associated to\ud
the presence of archaeological finds. To this end, a summary of case histories is\ud
illustrated giving a general framework of the latest progress in archaeo-magnetism
An integrated review of existing geological and geophysical data -partly acquired during oil and gas exploration -combined with new data provided by deep geothermal studies of selected key areas, was used for the 3D modeling and mapping of the top of the geothermal reservoir developed at a regional scale in Sicily (Central Mediterranean). The resulting 1:500,000 scale map covers the area of the whole Sicily (about 25,700 km 2 ) and is devoted to represent the main input for both the thermal modeling and the evaluation of geothermal potential at a regional scale. As the map indicates the distribution at depth of a likely target for geothermal drilling, it can be also used as a rough indicator of expected drilling cost for geothermal projects. Such a map can be seen as a useful planning tool for any geothermal project, and related exploration to be carried out in the Sicily region in the future.
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