National Marine Facilities gravity corer
|SeaVoX Device Catalogue
|A marine sediment corer. The corer consists of a weight with steel tube sections attached to it. The end of the corer is fitted with a tapered cutter section and a catcher to retain the sample. Sample tubes are fitted with a clear polycarbonate liner with diameter of 63.5mm. To collect a core sample, the corer is lowered down to the seabed on the end of a wire, stopping a set distance above. It is then lowered at a set speed into the sediment to obtain the sample, before being raised to the surface, it is dismantled and the polycarbonate core liner encasing the sample is removed. The weight can vary between 100kg to 1000kg. Depending on the size of the sample tube, the corer is capable of collecting sediments between 1-4 m in length.
|Has Current Version
|unconsolidated sediment corers
|Natural Environment Research Council, National Marine Facilities Sea Systems
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