Characterization of stronghold fortifications by 2D/3D/4D electrical resistivity tomography: major push towards quantitative interpretation

0582986 - GFÚ 2025 RIV DE eng J - Journal Article
Klanica, Radek - Štefan, I. - Hasil, Jan - Beránek, Roman
Characterization of stronghold fortifications by 2D/3D/4D electrical resistivity tomography: major push towards quantitative interpretation.
Pure and Applied Geophysics. Roč. 181, č. 3 (2024), s. 919-933. ISSN 0033-4553. E-ISSN 1420-9136
Institutional support: RVO:67985530 ; RVO:67985912
Keywords : stronghold fortification * electrical resistivity tomography * 4D ERT * archaeology
Impact factor: 2, year: 2022
Method of publishing: Open access
https://link.springer.com/article/10.1007/s00024-024-03427-x

Geophysical methods are widely used as noninvasive tools for archaeological prospection. In a first step is usually applied basic prospection of vast areas, when data are evaluated only in qualitative way. Sometimes is performed second step, during which take place more detailed multidimensional or combined surveys in order to image archeological monuments complexly, allowing quantitative interpretation. Hence, we used a unique and novel combination of multidimensional electrical resistivity tomography (ERT) on the Early Middle Ages stronghold fortifications at Vinor (Czechia) to achieve such interpretation. The joint results of 2D/3D/4D (time-lapse) surveys allowed us to precisely characterize individual construction components of the fortifications, including a ditch and rampart enhanced by a front wall with a berm. The ERT results recovered the fortification dimensions and the volume of building material used. The surveyed fortification section was verified by excavations directly after the ERT measurements. A comparison of the excavated section with geophysics proved that ERT was able to infer all the important fortification characteristics. In addition, illustrative picture of the resistivity manifestations of the basic components of this very typical fortification construction were obtained. The results show that multidimensional ERT provide access to quantitative interpretation allowing to explain archaeological structures behind investigated anomalies. In result, sites containing cultural heritage can be leaved intact, excavations can be substituted in surprisingly large extent, while unprecedented amount of archaeological information is still retrieved.
Permanent Link: https://hdl.handle.net/11104/0351025