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TerraDat is a UK based specialist geophysical ground exploration company that operates worldwide. Geophysical surveys provides a rapid, non-invasive ground investigation tool that has many applications ranging from locating buried manmade structures through to characterising geological and hydrogeological features. This TerraDat Technical Note deals with how geophysics can be used to rapidly and safely locate unexploded ordnance
Citation preview
Rapid UXO Acquisition SystemU
nexploded ordnance
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Example of finalised data - magnetic gradiometry to the left and interperetive plot to the right,data can be suppled in a variety of CAD and GIS formats
The Sensys rig can be towed by a variety ofvehicles from ATVs to tractors
TerraDat’s UXO detection acquisition rates have significantly increased due to the use of a specialist magnetic gradiometry carrier system. This system utilises eight Foerster FEREX CON 650 gradiometer probes mounted on a bespoke towed rig. Real-time, sub-centimetre accurate positioning is provided via a Trimble 5700 RTK GPS. The rig is towed across the survey area behind a 4x4 vehicle or ATV acquiring swaths of data up to 3.5m wide. The probes are spaced at 0.5m intervals, giving twice the resolution of a conventional gradiometry survey. In optimum field conditions, the new system allows acquisition rates of up to 40 hectares a day - significantly reducing survey costs and time when compared to a conventional survey on foot. As one of Europe’s leading environmental geophysical contractors, TerraDat’s enhanced processing and interpretation capabilities allow datasets to be comprehensively interrogated to provide information on a variety of site hazards such as archaeological features, mine workings and buried structures and services.
Up to 40 hectares of coverage a day
Full geophysical and archaeological
interpretation
Twice the resolution of a conventional
surveying
TechnicalNote
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TerraDat (UK) Ltd - Tel (08707 303050)www.terradat.co.uk
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Contact Simon Hughes for more info; [email protected]
