Concept
Geological Survey of Canada Ocean Bottom Seismometer
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL1257/1/ | |
|---|---|---|
| Within Vocab | SeaVoX Device Catalogue | |
| Alternative Labels | GSC OBS | |
| Definition | An instrument designed to measure movements in the earth's crust while lying on the seabed. The OBS consists of a pressure cylinder containing a seismometer instrument package, glass buoyancy spheres mounted on a floatation assembly, a hydrophone, and recovery aids. This instrument was designed to withstand pressures and temperatures experienced at up to 6000 m depth in the oceanic environment. The OBS sensors include a 2-component gimballed geophone package (Geospace - Model HS1) operating at 4.5 Hz, with a sensitivity of 1.14 v/in/sec and a fixed amplifier gain of +100 db, and a hydrophone (OAS - Model ES2D), operating between 3 - 20 Hz, with a sensitivity of 87 db re 1V/ubar, and a fixed amplifier gain of +71 db. | |
| Date | 2018-08-02T15:26:57 | |
| Identifier | SDN:L22::TOOL1257 | |
| Note | accepted | |
| Is Version Of | TOOL1257 | |
| version | 1 | |
| Broader | L19:SDNKG17 | sensor_model |
L05:369 | hydrophones | |
L05:368 | seismometers | |
L05:155 | seismic refraction systems | |
| Related | B75:ORG00177 | Bedford Institute of Oceanography |
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