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Trillium 360 vault seismometer sitting on large rock in an arctic landscape

Trillium 360 GSN

Broadband, low-noise performance that meets GSN operational requirements.

The world's highest performing broadband seismometer

The Trillium 360 GSN Seismometer series is the culmination of more than 30 years experience designing and building the best seismological instrumentation in the world. Its industry-leading performance, including low self-noise, very wide bandwidth, precisely calibrated response and immunity to environmental effects makes it well suited for many applications, including the deployment of new seismic networks or the recapitalization and expansion of existing facilities.
The vault, posthole and borehole Trillium 360 GSN series seismometers side by side

Understand seismicity on a global scale

Available in vault, posthole or borehole form factors, the 360 GSN series gives you full-bandwidth coverage for monitoring global and local seismicity with a single instrument.

Easy to use

Its many simple-to-use features, such as automatic leveling and mass centering that can be remotely initiated, and digital case tilt reporting make for fast and successful installation every time.


Meets GSN Requirements

Exceptional performance that meets USGS Class A+ requirements.

Low-frequency range An extended range useful to beyond a 10,000-second time period.  
Remote leveling Automatic leveling and mass centering that can be remotely initiated.  
Low magnetic sensitivity The lowest magnetic sensitivity of any broadband seismometer.  
Wide response bandwidth Widest available flat response bandwidth, 360 seconds to 80 Hz.  
Polar Certified Polar certified vault and posthole models are available for operating temperatures down to -50°C.  


Green Trillium 360 GSN Vault seismometer standing upright VAULT A patented thermal stability system minimizes the effect of diurnal temperature fluctuations.  
Stainless steel Trillium 360 GSN posthole seismometer standing upright POSTHOLE Its robust, waterproof, stainless steel enclosure protects from hostile environments.  
Stainless steel Trillium 360 GSN borehole seismometer standing upright BOREHOLE Designed for cased boreholes, with holelock and fail-safe release mechanism.