COASTAL GEOSCIENCES has launched the latest version of its vibrocorer soil sampling system following field trials off the coast of southern England this summer.
The Hydraulic vibrocorer is based on the company's standard vibrocorer equipment and uses 3m to 6m long barrels to recover 84mm diameter cores.
Trials for marine aggregate contractors in dense sandy gravel deposits involved comparing the new corer's performance against the standard electrical and the electrical frequency controlled vibrocorers.
Results showed that the new system achieved 2.5 times the penetration and recovered cores five times longer than the standard apparatus. Cores were also recovered in less than half the time at a rate of two to four minutes each, minimising barrel bending and core disruption.