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Seismic Instruments

Güralp has developed a range of sensor families that vary in performance from the very low frequency, very low noise required for teleseismic research, to medium and strong motion instruments more suited to regional and localised monitoring. We offer a choice of sensor casings and instrument accessories suitable for a range of deployment methods and your communication and power requirements.

We can supply sensors for deployment at the surface, in boreholes and on the ocean bottom. We offer fully integrated digital instruments as well as analogue instruments for use with a separate digitiser.

Güralp Radian

In 2016 we launched the Güralp Radian. The Radian is a slimline, subsurface, broadband digital seismometer that utilises state of the art technology in order to operate at any angle. This capability makes the Radian the ideal rapid deployment posthole instrument as it can be installed with a hand auger. A borehole Radian for vertical and non vertical cased holes is also available, and as well as individual deployments, it can be strung together to provide Vertical Seismic Profiling (VSP). For more information read the full Radian brochure here.


Contact Güralp for help selecting the most suitable instrument, or to find out more about any of our instruments.


Surface Seismometers


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We have a surface broadband seismometer suitable for every type of application. Within our 3 series we have a selection of very long period vault and portable instruments. Our 6 series and 40 series are suitable for rapid deployment in the field for medium motion applications such as aftershock monitoring and volcano monitoring.


Sub-surface seismometers and accelerometers



Borehole installations allow you to get closer to the seismic event, improving the accuracy of subsurface velocities and event depths. To further aid this, multiple boreholes can be strung together for vertical seismic profiling (VSP). We offer both seismometer and accelerometer borehole instruments as well as hybrid borehole instruments that combine the two.

Where cost is an issue, our Radian posthole instrument can be deployed in uncased holes, at any angle, in the shallow subsurface - enabling you to benefit from the reduced noise in the subsurface without the additional cost burden of providing a perfectly vertical borehole.


Ocean bottom systems


Orcus-photo-and-RenderLiber OBS

Our range of ocean bottom seismometer housings have been designed to perform at different depths via the most appropriate deployment method. Each can be combined with the sensor or sensors that will give you the dynamic range you require.


Surface Accelerometers



Guralp Systems Limited
Midas House
Calleva Park

Tel: +44 118 981 9056
Fax: +44 118 981 9943