The first lessons of the course will be devoted to the introduction of the basic concepts of applied geophysics, the importance of conducting geophysical surveys before an excavation and the definition of the main methods used in the archaeological field.
The geoelettric method will be explained, in particular:
- The active and passive methods
- electrical resistivity survey
- the Ohm’s law
- the electrical proprieties of materials
- the resistivity in the rocks and the earth
- the apparent resistivity
- monodimensional survey (SEV and horizontal profiles)
- two-dimensional surveys (galvanic and capacitive coupling).
Subsequently, they will be examined: GPR Electromagnetic Method, Magnetometric Method and Acoustic Methods. For each of these we will provide basic theory, the working principle of the tools used in archaeological sites, the physical parameters involved, the advantages and limitations of the different techniques.
The course will conclude with a comprehensive multi-technique field survey of a single archaeological site of North Sardinia.
Finally, the geophysical data acquired on the field will be processed and interpreted.