in the Suburbs and Countryside
Very often, when starting the excavation of archaeological remains that appeared during constructive works in the suburbs, the size of the site is unknown. This is a disadvantage in terms of planning the timing and the costs of the excavation.
Geophysical survey by means of magnetic gradiometer allows us to obtain a map of the magnetic anomalies of the subsoil which are generated by archaeological features such as combustions (fires, kilns, etc.), earthworks (ditches, silos, graves, etc.) and metals.
This is the faster geophysical system. It enables to survey areas of 3800m² per day with a single sensor and 7600m² with a dual sensor so it is the best tool for outlining sites in wide areas.
Once the site has been narrowed down using this system and archaeological features have been detected, the other two systems are used to complement the information in the areas that are more affected archaeologically.