MARINE EXPLORATION
Mariner Deep
Extended Duration Ocean Bottom Recorder
PRODUCT DETAILS
Featuring 10Hz geophones, Mariner Deep is designed for extended-duration seabed ocean bottom seismic data acquisition. Nodes can be deployed in depths exceeding 3,048 meters (10,000ft) with continuous recording for up to 200 days.
FEATURES
- Continuous, cable-free 4C autonomous recording
- Low frequency 10 Hz geophones
- Battery module: 200 days operation
- Built-in, full-resolution test generator
- Solid-state flash memory: 32 GB per channel
- Internal Heading Sensor
- 3 Component Magnetic Sensor
- ±5° Accuracy
- Measurements written to header every 2,000 samples
GS-ONE OMNI 10 Hz Geophone
PHYSICAL SPECIFICATIONS
| Moving Mass | 13.2g | 0.466 oz |
| Maximum coil excursion p-p | 6.10 mm | 0.240 in. |
| Minimum coil excursion p-p | 0.89 mm | 0.035 in. |
| Diameter | 30.5 mm | 1.2 in. |
| Height | 43.2 mm | 1.7 in. |
| Weight | 125 g | 4.40 oz |
| Operating and Storage Temperature Range | –40°C to +100°C | –40°F to +212°F |
ELECTRICAL SPECIFICATIONS
All parameters are specified with 7.5 kΩ load at 25°C in all tilt positions unless otherwise stated.
| Frequency | 10 Hz |
| Spurious Frequency | 150 Hz |
| Open Circuit Sensitivity | 100V/m/s (2.55 V/i/s) |
| Resistance with Shunt | 2500 Ω |
| Sensitivity at 70% Damping | 85 V/m/s (2.15 V/in/s) |
| Total Damping | 70% |
| Distortion at all tilt angles | <0.2% measured at 12 Hz with 0.1 in/s p-p |
Hydrophone
PHYSICAL SPECIFICATIONS
| Maximum Operating Pressure | 30.4 MPa (4,400 psi) |
| Maximum Working Depth | 3,048 m (10,000 ft.) |
| Operating Temperature Range1 | –10 to +75°C (+14 to 167°F) |
ELECTRICAL SPECIFICATIONS
| Nominal Capacitance(at 25°C 1atm) | 10.0 nanofarads |
| Voltage Sensitivity2 | 8.9 μV/μBar |
| Sensitivity (dBv ref 1μPa @ 25°C) | –201 dB re 1V/μPa |
| Frequency Response (into 2 MΩ load) | 1 –30,000 Hz |
MECHANICAL SPECIFICATIONS (Housing)
| Metric | US | |
| Length | 358 mm | 14.1 in. |
| Width | 222 mm | 8.8 in. |
| Height | 118 mm | 4.7 in. |
| Weight in Air | 18 kg | 39.6 lbs. |
| Weight in Seawater | 12 kg | 26.4 lbs. |
| Maximum Operating Pressure | 30.4 MPa/304 Bar | 4,400 psi |
| Maximum Operating Depth | 3,048 M | 10,000 ft. |
| Operating Temperature Range | –5°C to +60°C | +23°F to +140°F |
| Storage Temperature Range | –10°C to +60°C | +14°F to +140°F |
ELECTRICAL SPECIFICATIONS
Digitized 4C Recording Station: 4 Channel, 24 Bit A/D Digitizer 3C Orthogonal oriented GS-One OMNI 10Hz -Geophones 1 Hydrophone
| Digitization | 24-bit Delta-Sigma |
| Sample Interval | 0.5, 1, 2, 4 ms |
| Pre-amplifier Gains | 0, 6, 12, 18, 24, 30, 36 dB |
| Maximum Input Signal | 1.8 Vrms |
| Equivalent Input noise (@2ms sample interval) | 0.12 μVrms |
| Gain Accuracy | Better than 1% |
| Anti-alias Filter | 83% Nyquist |
| Instantaneous Dynamic Range | 129dB @ 2 ms sample interval |
| THD | <0.2% |
| Distance Between Digitizer & Farthest Sensor | <18 cm |
| Distance Between All Sensors | <11 cm |
| Flash Memory | 32 GB per channel |
| Frequency Response | 1 Hz – 825 Hz @ 1/2 ms sample interval |
| Battery Module | 200 days operation |
CLOCK SPECIFICATIONS
| Days | 30 | 60 | 90 | 100 |
| Max Uncorrected Drift | 2 ms | 8 ms | 17 ms | 21 ms |
| Corrected Drift | < .25 ms | < .5 ms | 1 ms | 1 ms |
