@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: . skos:member . skos:narrower . skos:related . skos:narrower . skos:related . skos:narrower . skos:altLabel "GEOMAR OBH-System"@en , "GEOMAR OBH-System" ; skos:broader , ; skos:definition "An observation and registration system designed to monitor acoustic and seismic events. The OBH is composed of a buoyant body, a flasher, a radio beacon, a data logger with batteries, and a hydrophone mounted between an acoustic release (iXSea or KUMQUAT) and a pressure cylinder. All metal parts are made from titanium, whilst the buoyant bodies are made of syntactic foam. The system is designed to float at approximately 1 m above the sea floor, and can operate down to 6000 m water depth. The descent and ascent speeds are approximately 1 m/s to 1.2 m/s."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL1200" ; skos:note "accepted"@en ; skos:prefLabel "GEOMAR Ocean Bottom Hydrophone System"@en ; skos:related . skos:narrower .