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Mariner

Slim Profile Shallow Water Data Recorder

PRODUCT DETAILS

The Mariner is designed for extended-duration seabed ocean bottom seismic data acquisition. Nodes are ideally deployed at shallow depths down to 750 meters with continuous recording for up to 70 days.

FEATURES

  • Wireless Charge and Data Download
  • Continuous cable-free 4C autonomous recording
  • Maximum operating depth of 750 meters
  • Battery life: 70 days operation
  • Built-in full resolution test generator
  • Solid-state flash memory: Up to 32 GB per channel
  • Internal Heading Sensor

 

OBST CL bright for web

GS-ONE Omni Geophone

PHYSICAL SPECIFICATIONS

Moving Mass

13.2 g

0.466 oz

Maximum coil excursion p-p

4.06 mm

0.16 in.

Minimum coil excursion p-p

1.02 mm

0.04 in.

Diameter

30.5 mm

1.2 in.

Height

40.7 mm

1.6 in.

Weight

130 g

4.60 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

15 Hz

Spurious Frequency

>160 Hz

Distortion at Horizontal

0.05% Typical

Coil Resistance

1450 Ω

Sensitivity at 70% Damping

69.2 V/m/s (1.75 V/i/s)

Open-Circuit Damping

70%

Distortion at all tilt angles

<0.2% measured at 15 Hz with 0.2 in/s p-p

 

MP 18 BH Hydrophone

ELECTRICAL SPECIFICATIONS

Nominal Capacitance (at 25°C 1atm)

16.0 nanofarads

Voltage Sensitivity2

4 V/Bar

Sensitivity (dBv ref 1μPa @ 25°C)

208 dB

Frequency Response (into 2 Mload)

5 –1,000 Hz (typical)

1. Safe to be used slightly below 0°C as long as water is not frozen. Do not let hydrophone be frozen in ice, as this will cause irreversible damage to the crystals.

2. Voltage Sensitivity is specified when connected to OBX.

Mariner

MECHANICAL SPECIFICATIONS

METRIC

US

Length

578 mm

22.75 in.

Width

178 mm

7.0 in.

Height

102 mm

4.0 in.

Weight in Air

7.85 kg

17.3 lbs.

Weight in Seawater

2.39 kg

5.26 lbs.

Maximum Operating Pressure

7.5 MPa/75 Bar

1,095 psi

Maximum Operating Depth

750 M

2,460 ft.

Operating Temperature Range

–5°C to +50°C

+23°F to +122°F

 

ELECTRICAL SPECIFICATIONS

Digitized 4C Recording Station: 4 Channel, 24 Bit A/D Digitizer

3C Orthogonal oriented GS-One OMNI Geophones

1 MP-18BH-2500 Hydrophone

Digitization

24-bit Delta-Sigma

Sample Interval

0.25, 0.5, 1, 2, 4 ms

Pre-amplifier Gains

0, 6, 12, 18, 24, 30, 36 dB

Maximum Input Signal

1.8Vrms

Equivalent Input noise (@2ms sample interval)

0.17 μVrms

Gain Accuracy

Better than 1%

Anti-alias Filter

83% Nyquist

Instantaneous Dynamic Range

124dB @ 2 ms sample interval

THD

<0.2%

Distance Between Digitizer & Farthest Sensor

<36 cm

Distance Between All Sensors

<4 cm

Flash Memory

16 GB or 32 GB per channel

Frequency Response

1 Hz – 1650 Hz @ ¼ ms sample interval

Battery Life

70 days operation

Internal Heading Sensor

+/-5º

 

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