Ocean Bottom Seismometer - Technical Description
Standard OBS
The OBS on deck is ready for operation.
Deployment of the OBS.
OBS after emerging at the sea surface.
| Number of instruments | 68 |
| Geophone, gimbal-mounted | Güralp CMG-40T, 60 sec - 50 Hz |
| Hydrophone | HighTechInc HTI-04-PCA/ULF, 100 sec - 8 kHz |
| Digital data recording unit | Send Geolon MCS, 24 bit, 1 - 1000 Hz, 20 GB |
| Acoustic release transponder | Kum K/MT 562 and Kum K/MT 8011M onboard unit |
| VHF radio beacon | Novatec RF-700A1 and Seimac DR500 bearing receiver |
| Xenon flashlight | Novatec ST-400A |
| Floating unit | Syntactical foam |
| Frame and pressure tubes | Titanium alloy |
| Anchor | Iron |
| Maximum deployment depth | 6000 meters |
| Maximum deployment duration | 19 months |
| Dimensions (excl. flag and beacons) | 1.65 m x 1.30 m x 0.72 m |
| Dimensions (incl. flag and beacons) | 2.80 m x 1.30 m x 0.72 m |
| Weight (excl. anchor) in air / in water | 340 kg / -30 kg |
| Weight (incl. anchor) in air / in water | 405 kg / 27 kg |
| Transport | 12 units per standard sea container |
Deep-sea OBS
Deep-sea OBS after emerging at the sea surface.
| Number of instruments | 12 |
| Geophone, gimbal-mounted | Güralp CMG-40T, 60 sec - 50 Hz |
| Hydrophone | HighTechInc HTI-04-PCA/ULF, 100 sec - 8 kHz |
| Digital data recording unit | Send Geolon MCS, 24 bit, 1 - 1000 Hz, 20 GB |
| Acoustic release transponder | Kum K/MT 562 and Kum K/MT 8011M onboard unit |
| VHF radio beacon | Novatec RF-700A1 and Seimac DR500 bearing receiver |
| Xenon flashlight | Novatec ST-400A |
| Floating unit | Syntactical foam |
| Frame and pressure tubes | Titanium alloy |
| Anchor | Iron |
| Maximum deployment depth | 7300 meters |
| Maximum deployment duration | 8 months |
| Dimensions (excl. flag and beacons) | 1.45 m x 1.31 m x 0.72 m |
| Dimensions (incl. flag and beacons) | 2.57 m x 1.31 m x 0.72 m |
| Weight (excl. anchor) in air / in water | 320 kg / -30 kg |
| Weight (incl. anchor) in air / in water | 385 kg / 27 kg |
| Transport | 12 units per standard sea container |
Ocean Bottom Hydrophones (OBH)
Ocean bottom hydrophone.
| Number of instruments | 5 |
| Hydrophone | Oas E-2PD, 0 Hz - 5 kHz |
| Digital data recording unit | Send Geolon MBS, 16/20 bit, 50 - 10000 Hz, 4-16 GB |
| Acoustic release transponder | Mors RT 661 CE and Mors TT 301 onboard unit |
| VHF radio beacon | Novatec RF-700A1 and Seimac DR500 bearing receiver |
| Xenon flashlight | Novatec ST-400A |
| Floating unit | Syntactical foam |
| Anchor | Iron |
| Maximum deployment depth | 6000 meters |
| Maximum deployment duration | 1 week |