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Cascadia Compact posthole seismometer being held in a persons hand connected to a large cable

Cascadia Compact Posthole

The best class-A accelerometer meets the world’s most popular seismometer.

A winning combination

The Cascadia Compact, formerly the Trillium Cascadia, combines the proven Trillium Compact Posthole with the Class A Titan Posthole in a single posthole instrument. This dual output sensor measures both strong motion and weak motion, with absolutely no compromise in performance. With one hole to dig, a single connector, a single cable and sensor that are guaranteed to be mutually aligned, proper deployment is virtually effortless.

Stainless steel Cascadia Compact Posthole seismometer standing upright

Data not limited by instrumentation

The Cascadia maximizes the scientific return on your investment by providing the richest possible data catalog to facilitate local and teleseismic studies. While you are monitoring for strong motion events, your instruments provide a valuable source of weak motion data that helps calibrate and train event detection algorithms, as well as benefit the broader seismology community.

A highly integrated station solution

The Cascadia series is optimized for use with our popular Centaur digital recorder. When used with the Centaur Digital Recorder, real-time tilt and azimuth correction feature permits the digitizer to correct for any tilt and misalignment at the source, eliminating the need for correction downstream. The Centaur allows for easy configuration of both sensors via the Centaur’s web interface.


Digital Leveling

Features a digital bubble level for easy downhole leveling.

Durable design Suitable for harsh environments, resistant to flooding.  
Affordable use Low cost of deployment/low cost of ownership.  
Quick deploy Highly portable, easy to install, no vault required, minimal site footprint.  
Dual output sensor Measures both strong and weak motion with no compromise in performance.  
Polar certified This Polar Certified Model is available for operating temperatures down to -50°C.  

Use Cases

Earthquake early warning, structural monitoring, volcano monitoring, local/regional monitoring and modelling, aftershock monitoring and induced seismicity monitoring.

3D Rendering of seismic data from an earthquake