Concept
Geological Survey of Canada Ocean Bottom Seismometer
| URI | http://vocab.nerc.ac.uk/collection/L22/current/TOOL1257/ |
|---|---|
| Within Vocab | SeaVoX Device Catalogue |
| Preferred Label | Geological Survey of Canada Ocean Bottom Seismometer |
| 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. |
| Broader |
L05:
seismic refraction systems L05: seismometers L05: hydrophones |
| Related |
B75:
Bedford Institute of Oceanography |
| Note | accepted |
| Deprecated | false |
| Alternative Label | GSC OBS |
| Version | 1 |
| Has Current Version | http://vocab.nerc.ac.uk/collection/L22/current/TOOL1257/1/ |
| Authored On | 2018-08-02 15:26:57 |
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