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A Compact Digital Broadband Seismometer for Permanent and Temporary Volcano Monitoring: Güralp Certimus

Seismicity is an an important part of volcano monitoring strategies across the globe. Seismic data from volcanic regions provides researchers with insights into the link between sub surface processes and seismicity, directly feeding back into improved monitoring and hazard assessment. Improved seismic monitoring systems that are lower power, easier to deploy and more cost effective can drive the move toward denser seismic monitoring arrays, like those outlined by the SZ4D initiative, which can more accurately characterize observed activity over time.

Güralp has addressed this issue with a sensor technology with the ability to function at any angle, without the need for a gimbal system or human interference. The Certimus broadband digital seismometer combines compact a form factor with OBS-inspired low power usage to provide the operator with easily deployable stations. An omnidirectional sensor allows the operator to install the system without levelling and without needing to intervene if the system changes orientation during deployment, e.g. during ground inflation or deflation.

A user-configurable long-period corner between 120s and 1s allows the operator to select the instrument response most suitable for the application and also eliminated the need for extensive instrument pools. All configurations can be managed on an optional hardened touchscreen locally or remotely through the web interface of the on-board Minimus digitizer. The large 64GB internal microSD cards also means that the system is well suited for offline rapid deployments.

This highly versatile and configurable sensor technology will play an important role in delivering reliable seismic data from dynamic volcanic environments, by ultimately bringing down the costs of regular sensor maintenance by reducing the need for regular sensor alignment. In addition, rapid deployment pools of seismic sensors can be streamlined as the Certimus is capable of displaying various frequency responses.

Session: Advances in the Use of Seismic and Acoustic Methods to Constrain Physical Processes at Volcanoes [Poster]

Type: Poster

Room: Evergreen Ballroom

Date: 4/22/2022

Presentation Time: 08:00 AM Pacific

Presenting Author: James C. Lindsey

Student Presenter: No

Additional Authors