The ArchaeoGeophysical techniques are based on the investigation of buried cultural structures and surrounding materials in the archaeological framework. Unfortunately, the geophysical contrast between archaeological features and surrounding soils sometimes are difficult to define due to problems of sensitivity and resolution both related on the characteristic of the subsoil and the geophysical methods. An archaeological experimental activity has been performed in the Hydrogeosite laboratory, a full large scale controlled site consisting on a pool shape structures of 230m3 where archaeological remains have been installed. The laboratory experiment was performed to assess of the capability of EM geophysical techniques to detect archaeological remains placed in the humid/saturated subsoil. The archaeological test site was characterized by remains of Roman times (walls, tombs, roads, harbour, etc.) covered by sediments. In order to simulate lacustrine and wetland condition and to simulate extreme events (for example underwater landslide, fast natural erosion coast, etc.) the phreatic level was varied and various acquisitions for the different scenarios were performed. The integration of electric and electromagnetic data in that conditions allowed us to overcome the limits of each technique in terms of resolution and depth. Moreover, the experiment highlight the uncertainties related on the interpretation of geophysical analysis.
Archaeogeophysical experiments in the large scale laboratory
Rizzo E.
2015
Abstract
The ArchaeoGeophysical techniques are based on the investigation of buried cultural structures and surrounding materials in the archaeological framework. Unfortunately, the geophysical contrast between archaeological features and surrounding soils sometimes are difficult to define due to problems of sensitivity and resolution both related on the characteristic of the subsoil and the geophysical methods. An archaeological experimental activity has been performed in the Hydrogeosite laboratory, a full large scale controlled site consisting on a pool shape structures of 230m3 where archaeological remains have been installed. The laboratory experiment was performed to assess of the capability of EM geophysical techniques to detect archaeological remains placed in the humid/saturated subsoil. The archaeological test site was characterized by remains of Roman times (walls, tombs, roads, harbour, etc.) covered by sediments. In order to simulate lacustrine and wetland condition and to simulate extreme events (for example underwater landslide, fast natural erosion coast, etc.) the phreatic level was varied and various acquisitions for the different scenarios were performed. The integration of electric and electromagnetic data in that conditions allowed us to overcome the limits of each technique in terms of resolution and depth. Moreover, the experiment highlight the uncertainties related on the interpretation of geophysical analysis.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
