A non-intrusive investigation integrating complementary technologies was carried out at four vast archaeological settlements located in the northern part of Apulia (Southern Italy). An aerial photographic survey combined with a high-resolution magnetic investigation was used to detect many buried archaeological features. After processing, both crop marks and magnetic anomalies appeared very sharp and well-defined, outlining the shape and plan of the buried structures with notable accuracy.Furthermore, differentialglobalpositioning system measurementswere carried out in order to geocode the magnetic grids, to orthorectify the oblique coloured photographs and to make these data sets suitable for input into a GIS; a very good spatial correlation and a more rigorous and comprehensive interpretation of the various data elements were attained. Finally, as a result of this combined and accurate multilayer analysis, an archaeologicalinterpretation was proposed, enabling useful information to be obtained on the transformations that have occurred over time at these study sites.
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