Intertidal and Inshore Marine

Cable, wreck, UXB and submerged steelwork detection

The use of passive magnetic survey, for intertidal work using either hand-carried instruments or for larger areas an ATV-towed array is invaluable for mapping a range of buried targets as long as there is a ferrous component. This can include the armour of underwater cables and steel associated with munitions, spikes and wire from wartime defences, UXB or ordnance disposal. In addition we can map iron components of buried shipwrecks, e.g. bolts and nails or more exotically, cannon!

Depth to bedrock

Shallow seismic techniques can be used in saline environments for geological profiling, allowing the depth of sand and gravel deposits to be measured. Applications include expansion of waterside infrastructure, installation of underwater cables and environmental monitoring. In freshwater environments electrical and electromagnetic techniques are also applicable.

Palaeo-environmental research

The use of small hand-augered boreholes combined with down-hole geophysical techniques, e.g. magnetic susceptibility, can be used to detect buried land surfaces within flooded environments. In many coastal locations past sea level rise has drowned former landscapes, the detection and understanding of which can aid investigation of problems of modern sea level changes and archaeological projects.