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Soil resistivity data

Jam
Hi all


A couple of times recently (example) there’s been mention of the BGS soil electrical resistivity model. I looked it up (here) and indeed it does look like a helpful resource as a first-pass check prior to - and a sense check for - a proper survey. But the pricing model direct from BGS isn’t sensible for a single site due to handling fees and they’re not replying to emails anyway... has anyone got experience of actually using the data or an alternative and where was it obtained from? 

Sparkingchip‍ mentioned that he’d seen a wall poster available which would be ideal. But I can’t see where he’d get it from?
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    Be aware that the maps are only a general guide - within that there are often  quite large zones that are erratic - especially in places that have seen glaciers in the past, it is not uncommon to find clay, sand and gravel soil types within a km of each other, or even the odd chalky outcrop, while the national map just says 'clay' and in terms of no nasty surprises nothing beats a local survey.

    Actually you may have seen on archeology TV  programmes like "Time Team" and similar that a fine detail map of ground resistance, often done with towed spiked wheels or previously in a simpler form with a low paid student stabbing in electrodes on a preset frame at a regular spacing, can be used to find the course of old ditches or buried foundations of buildings and so on.

    wikipedia article

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  • 0
    Be aware that the maps are only a general guide - within that there are often  quite large zones that are erratic - especially in places that have seen glaciers in the past, it is not uncommon to find clay, sand and gravel soil types within a km of each other, or even the odd chalky outcrop, while the national map just says 'clay' and in terms of no nasty surprises nothing beats a local survey.

    Actually you may have seen on archeology TV  programmes like "Time Team" and similar that a fine detail map of ground resistance, often done with towed spiked wheels or previously in a simpler form with a low paid student stabbing in electrodes on a preset frame at a regular spacing, can be used to find the course of old ditches or buried foundations of buildings and so on.

    wikipedia article

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