Vibrocoring is a way of collecting a long ‘core’ sample of soil or sediment on underwater archaeological sites. It is also used where the ground is particularly wet, for example in bogs, wetlands, and on beaches.
It works by using gravity and vibration energy to pass a long tube into the ground. A vertical sample down through the ground is collected inside the tube, showing the different layers of soil.
Recording a vibrocore. Each core is carefully recorded, with the depth and changes in soil type noted © Wessex Archaeology