Nanometrics’ industry-leading portfolio of Trillium seismometers includes a borehole variant for deep-earth deployments in cased boreholes

The Trillium Borehole is ideal for local, regional and teleseismic studies having a response flat to velocity from 120 seconds to 150 Hz and self-noise below the NLNM at 100 seconds. Operators will appreciate the low power consumption, remote mass centering and robust no-mass lock design inherent in all Trillium seismometers.

Local, regional & teleseismic studies

The Trillium Borehole is ideal for local, regional and teleseismic studies having a response flat to velocity from 120 seconds to 150 Hz and self-noise below the NLNM at 100 seconds. Operators will appreciate the low power consumption, remote mass centering and robust no-mass lock design inherent in all Trillium seismometers.

A highly integrated station solution

When using the Trillium 120 BH with our popular Centaur digitizer, you’ll have access to a digital leveling bubble through the Centaur GUI. The virtual leveling bubble makes for easy leveling down a dark hole, or once buried, gives you the ability to check levelness at any time.

Benefits

• Automatic leveling can be remotely initiated for corrections of up to ±5 degrees, facilitating hole-lock installations in deep boreholes.
• The axis stack is mechanically leveled to ensure that the vertical axis does not couple horizontal noise.
• A robust, waterproof, stainless steel enclosure ensures the sensor is protected from hostile environments.
• Instrument recovery is aided by a fail-safe holelock release mechanism that prevents jamming to the casement during removal.
• Low power consumption of 490 mW minimizes power source requirements at the site.
• Quiet down-hole deployments benefit from the exceptional selfnoise below NLNM at 100 s.

Integration Kit

We now offer an integration kit that allows you to combine the Titan Posthole with a Trillium 120 Posthole or Trillium 120 Borehole seismometer for a Cascadia that has an even lower noise floor and greater dynamic range.