Guralp Systems Limited
Breve Ocean Bottom Seismometer System

Chapter 11. Appendix 3: Detailed Specifications

Seismometer

Configuration/topology

Triaxial orthogonal

Output bandwidth

10 seconds to 100 Hz

Output sensitivity

5 V/m/s2

Clip level

0.1g

Lowest spurious resonance

> 300 Hz

Hydrophone

Model

HTI-96-Min

Output bandwidth

2 Hz – 30 kHz

Output sensitivity

-165 dB rel 1 V/ μPa (562 V/bar)

Battery

Battery type

Lithium-ion polymer

Maximum deployment time

6 months

Digitiser

Type

Guralp CD24

Primary inputs

Four (3 x seismometer; 1 x hydrophone)

Digital resolution / output format

24-bit

ADC type

Sigma-delta

Sample rates available

User-selectable up to 1000 sps

Data storage capacity

60 GB

Environmental

Maximum deployment depth

100 m (rope deployment); 2000 m (ROV)

Operating temperature range

1 °C to +40 °C (tested)