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Title

     EPOS-N: OCEAN BOTTOM SEISMOGRAPHS (OBS)

By
M.L.S.
Date
15 February, 2016
Version
0.1

From EPOS-N Project description (rev. 10 Jan 2016), p.12:

The aeromagnetic survey will be supplied with a temporary installation of five Ocean Bottom Seismometers (OBS). Such an installation is complementary to the inland seismic monitoring capacity on Svalbard and will improve the earthquake locations significantly in the offshore areas west of Svalbard and along the Knipovich Ridge.

Instruments to be purchased: .... Ocean Bottom Seismographs (OBS) relevant for the Arctic monitoring: 3 units.

Click to visit Geomar OBS website.

Image source Geomar.

Lobster OBS made by K.U.M. Umwelt- und Meerestechnik Kiel GmbH.


SURVEY OF OBS MODELS

MODEL / MANUFACTURER SENSORS RECORDER BATTERY LIFETIME MAX DEPTH DEPLOYMENT / RECOVERY COMMENTS
SEISMOMETER HYDROPHONE
LOBSTER

K.U.M.
Broadband Ocean Bottom Sensor nanometrics Trillium compact in titanium pressure tube - - 1 year1) 6000m Free fall deployment, beacon recovery See mail
Lieber OBS

GURALP
Guralp 3T 360s – 50Hz seismometer (bandwidth can be altered) - - 12 months (15 month version under development) 6000 or 7300m (two different models) Free fall deployment for deep water, recovery via acoustic mechanical release system See mail
BB603D-OBD

PMD / Kinemetriks / Streckeisen
Standard:
50Hz - 60s
Optional:
50Hz - 120s
- - N/a N/a Sensor only.
MicrOBS, Brochure, specifications

Sercel
No long period version, it might seem. Ref. specifications. - - 24 days + 8 days idle (but external output for memory and battery charging) 6000m Free fall deployment for deep water, recovery via acoustic mechanical release system Probably made for industrial use, but they are advertising earthquake monitoring.
1) Adjustable battery capacity.

http://www.pmdsci.com/pdfs/BB603.pdf

OTHER:


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Page last modified on February 15, 2016, at 09:41 AM
Electronics workshop
Department of Earth Science - University of Bergen
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