Sample tubes are fitted with a clear polycarbonate liner with diameter of 63.5mm. The end of the corer is fitted with a tapered cutter section and a catcher to retain the sample. Selection of the length of sample tube is determined according to the type of sediment being sampled and is generally between one and four metres. The weight can vary between 100kg to 1000kg. This corer consists of a weight with steel tube sections attached to it. Gravity coring is the simplest method of obtaining a sediment sample from the seabed. The National Marine Equipment Pool has eight different types of corer with both tubular and box varieties available. A diverse range of methods and equipment are used for obtaining samples from the sea and seabed, depending on the material or measurement required.Įxplore descriptions of different types of sampling.Ĭorers are used for collecting sediment from the ocean floor they work by pushing or grabbing sediment into containers.
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