@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 semapv: . @prefix skos: . @prefix sssom: . @prefix void: . sssom:subject_id . skos:related . sssom:object_id . sssom:object_id . skos:member . skos:narrower . sssom:object_id . sssom:subject_id . skos:narrower . skos:narrower . skos:related . skos:related . sssom:object_id . sssom:subject_id . skos:narrower . rdf:type skos:Concept ; dce:identifier "SDN:L22::TOOL1681" ; dc:date "2021-04-29 15:48:58.0" ; dc:identifier "SDN:L22::TOOL1681" ; pav:authoredOn "2021-04-29 15:48:58.0" ; pav:hasCurrentVersion ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "Sercel MicrOBS" , "Sercel MicrOBS"@en ; skos:broader , ; skos:definition "An ocean bottom seismometer designed for deep water refraction seismic surveys. It records and monitors earthquakes and natural seismicity to determine epicentre and associated mechanisms in active tectonic areas. With 4C multi-component recording (3 geophones, 1 hydrophone), MicrOBS allows accurate characterization of P and S velocities in deep crustal layers. MicrOBS dives autonomously to the seafloor, and can be deployed for up to 24 days before being recalled to the surface via acoustic signal release. It contains rechargeable Li-Ion 15V/40Ah batteries and an 8 Gb compact flash card (optional 16 Gb). MicrOBS has a low frequency cut-off of 2 Hz (-3 db), a natural frequency of 4.5 - 10 Hz, and a sensitivity range from 32 V/m/s to 22.8 V/m/s. It is depth-rated to 6000 m."@en ; skos:inScheme ; skos:notation "SDN:L22::TOOL1681" ; skos:note "accepted"@en ; skos:prefLabel "Sercel MicrOBS ocean bottom seismometer"@en ; skos:related , . sssom:subject_id . dc:isVersionOf . skos:related .