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Exploration of the Hellenistic fortification complex at Asea using a multigeophysical prospection approach
Author(s) -
Dogan M.,
Papamarinopoulos S.
Publication year - 2005
Publication title -
archaeological prospection
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.785
H-Index - 38
eISSN - 1099-0763
pISSN - 1075-2196
DOI - 10.1002/arp.262
Subject(s) - ground penetrating radar , geology , electrical resistivity tomography , archaeology , geophysical survey , geomorphology , electrical resistivity and conductivity , geophysics , radar , geography , engineering , telecommunications , electrical engineering
Abstract Multi‐electrode resistivity tomography, twin‐probe and ground‐penetrating radar (GPR) geophysical techniques were applied at the multicultural archaeological site of Asea as a collaboration between the Swedish Institute at Athens and the University of Patras. This work presents the geophysical results of Grid 16 where a subsurface polygonal city wall was discovered in the field season 2002. It is intended to explore especially the location, depth and trending direction of the city wall to contribute progressive studies of methods applied to subsurface walls. The survey was performed using the Geopulse imager, with 25 electrodes at 0.8 m electrode spacing, Geoscan RM4 and SIR‐10 GPR systems. The surveys used a 20×20 m grid mode and the Wenner–Schlumberger hybrid array was selected for resistivity measurement. The Hellenistic period city wall was imaged in the south–north direction in a well‐preserved situation below subsurface. The results revealed that the resistivity method can provide a clear pseudo‐image of a medium to large size wall with high accuracy on archaeological sites. Interpretation of GPR three‐dimensional depth‐slices identified the position, dimension and orientation of the subsurface city wall. Copyright © 2005 John Wiley & Sons, Ltd.