Magnetic surveys represent a method of subsurface investigation based on measuring magnetic field anomalies that can be generated by different types of ferromagnetic bodies.
This type of prospection is widely adopted for archaeological researches, in the waste sites to verify the presence of buried anomalous bodies and in the areas where the risk of dangerous waste pollution is high; it can also be used for the research of explosive devices.

Magnetic methods provide information on:
• subsurface magnetic anomalies distribution
• buried metal bodies

Surveys are carried out using a GSSI (Geophysical Survey System Inc) magnetometer, GEM-300 model.