Electrical Conductivity Depth Modelling with a Multireceiver EMI Sensor for Prospecting Archaeological Features
Timothy Saey|Philippe De Smedt|Eef Meerschman|Mohammad Monirul Islam|Fun Meeuws|Ellen Van De Vijver|Alexander Lehouck|Marc Van Meirvenne
ABSTRACT Multiple apparent electrical conductivity (EC a ) measurements with an electromagnetic induction (EMI) sensor frequently reveal analogue patterns caused by conductive features in the soil. A procedure was proposed to highlight different archaeological anomalies based on combinations of simultaneous EC DUALEM‐21S instrument. After selection 3.5 ha study site, 0.79 has been recorded excavation. Since majority were found between plough layer and 1.0 m below soil surface, set four equations developed model within that predefined depth interval. This employed response curves specific coil configurations. The modelled 0.5 ( showed larger variability across than raw data. To quantify added value this conductivity, measured compared rasterized map traces. Finally, proved be better able distinguish ‘empty’ background. technique allowed highlighting vague measurements. Copyright © 2011 John Wiley &amp; Sons, Ltd.
Archaeological Prospection