@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::TOOL1720" ; dc:date "2021-07-27 11:05:39.0" ; dc:identifier "SDN:L22::TOOL1720" ; dc:isVersionOf ; pav:authoredOn "2021-07-27 11:05:39.0" ; pav:version "1" ; void:inDataset ; owl:deprecated "false" ; owl:versionInfo "1" ; skos:altLabel "Guralp Aquarius OBS" ; skos:broader ; skos:definition "An Ocean Bottom Seismometer (OBS) that uses acoustic telemetry to deliver near real-time seismic data from the ocean floor to the surface without cables. The Aquarius is a freefall OBS equipped with acoustic data telemetry and a digital feedback tri-axial broadband seismometer. A three-axis magnetometer and a MEMS accelerometer record the seismometer's 3D position on the seabed for data rotation during post-processing. The instrument is fitted with an absolute pressure gauge (APG) and a hydrophone. The standard hydrophone has a frequency response of 2 Hz - 30 kHz, with the option to upgrade to an ultra-low frequency version of 100 s to 8 kHz. There is also the option for an additional high performance APG. operational at +/-90 °, with a flat response between 120s and 100Hz. The long period frequency corner of this design is user-selectable from 120 sec to 1 sec allowing the sensor response to be tailored to the environment."@en ; skos:notation "SDN:L22::TOOL1720" ; skos:note "accepted"@en ; skos:prefLabel "GURALP Aquarius ocean bottom seismometer"@en ; skos:related , .