@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . rdf:type skos:Concept ; dce:identifier "SDN:L22::TOOL1175" ; dc:date "2017-11-23 13:03:21.0" ; dc:identifier "SDN:L22::TOOL1175" ; pav:authoredOn "2017-11-23 13:03:21.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "NMF Grav" , "NMF Grav"@en ; skos:broader , ; skos:definition "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."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL1175" ; skos:note "accepted"@en ; skos:prefLabel "National Marine Facilities gravity corer"@en ; skos:related .