@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @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 sdo: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . @prefix xsd: . rdf:type sdo:DefinedTerm ; sdo:description "A marine seismic source where a pair of conventional airguns (one, the generator, fires in the conventional manner; the second, known as the injector) fires some milliseconds later to prevent bubble from collapsing. Could be used in true GI mode (volume of injector twice of volume of generator), harmonic mode (same volume of generator and injector) or true airgun (no delay between generator and injector)."@en ; sdo:inDefinedTermSet ; sdo:name "GI-gun"@en ; sdo:termCode "SDN:L05::GIAG" .