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Stainless steel Trillium Compact OBS seismometer sitting on the deck of a ship beside an Abalones

Trillium Compact OBS

An ultra-low power broadband seismometer for ocean campaigns.

A reputation for dependability

The Trillium Compact Ocean Bottom Seismometer (OBS) is an ultra-low power broadband seismometer for ocean bottom deployments to 6000m depth. The OBS vessel and gimbal design preserves the full performance of the land-based Trillium Compact seismometer, including its exceptional dynamic range and low noise floor

Seismometer with stainless steel metal housing, metal protective cap and 2 black connectors on top

Performance & Dependability

Incorporating a robust and reliable leveling gimbal that operates over a full 360° range, the Compact OBS will auto-level from all orientations. A full titanium cylindrical pressure vessel for 6000m deployments, or aluminum-anodized enamel painted vessel for 1800m deployments. Proven glass epoxy connectors ensure exceptional resistance to corrosion in marine environments.

Availability via two connections

The system employs two separate connections: the primary analogue connection as well as a digital connection. The digital connector is provided for final configuration and sensor verification prior to deploying the OBS overboard.


kinematic 360° gimbal

Precise auto-leveling from any orientation ensuring successful deployment and implementation.

Comprehensive SOH State-of-Health logging includes case orientation, providing a powerful data set for optimizing deployment techniques.  
120-second performance Provides the same exceptional performance as the proven Trillium Compact land seismometers.  
Low Power Ultra-low 195 mW typical power consumption reduces battery costs.  
systems compatible Compatible with Scripps Oceanographic Institute Abalones and other OBS systems.  
Easy Integration Integrates with existing short period or mid-band infrastructure (platforms, power systems, and digitizers).  

Ocean Bottom Systems

Scripps and Nanometrics partnered to make Ocean Bottom Systems globally available with the Abalones OBS. In the world’s most demanding environment you need a solution that is proven to provide results.

Yellow Abalones OBS seismic station top view