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Resistivity survey of the Roman castle Ruffenhofen, BavariaResistivity surveying is used as a special application for prospecting archaeological structures made from stone. This technique is based on differences of the apparent electric conductivity of the upper soil. Modified grounding instruments or commercially available resistivity meters give excellent results as an alternative method on sites where the structures are not detectable by magnetometry or as a supplementary technique where architectural details of stone foundations are of great importance. In a latter case magnetic prospecting is typically applied for fast and large area coverage first, whereas resistivity survey is used for detailed work on specific buildings only. Resistivity data are typically converted into 256 greyscale values, digitally transformed and filtered. However, for the geophysical and archaeological interpretation of data, different colour palettes as well as 3D visualisations may be applied.

by Tomasz Gorka last modified 24. Apr 2009 14:13
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Printed 23. Oct 2017 13:42