TerraDat’s expertise in shallow seismic surveying to profile bedrock and map changes in subsurface engineering properties goes to another level with the recent acquisition of a powerful weight drop source. As far as we know, it’s the only one of its kind in the UK and has significant benefits over other seismic sources, not least it’s power and portability.
We acquired the equipment in 2017 and it has undergone extensive refurbishment at our HQ in South Wales. The US-manufactured Bison EWG ‘Thumper’ model 1417-2 2 elastomers 5000x150x15mm accelerating a 350kg weight onto a 814x814x50mm UHMWPE (ultra-high molecular weight polyethylene) plate.
Target depths of up to 1km in favourable conditions. Available to hire (with a team), or as part of our enhanced seismic acquisition and processing service.
Read more about how seismic surveys can enhance understanding of subsurface geology here.