Seismic Monitoring - Monitoring and Testing Information

Articles & Whitepapers

Determination of the damping ratio by multi-channel spectral analysis of seismic downhole data

Soil dynamic parameters such as the damping ratio are of major interest in earthquake engineering. We’ve currently published a publication which comes back to a relationship between attenuation and velocity dispersion of body waves which replaces the measurement of the amplitude characteristics of seismic signals by a frequency dependent velocity function. The implementation of this method ...

Are This Summer’s Earthquakes Cause for Concern?

In July of this year, North America’s west coast experienced a string of earthquakes, some rating as high as 6.7 in magnitude. This recent seismic activity has left many people worried and ...

Seismic Equipment for P-Wave Tomography up to 1000 m

We developed a prototype of a new P-wave sparker borehole source and digital hydrophone string. SBS1000 Magnum | P-Wave Sparker Borehole Source The borehole source SBS1000 Magnum is designed for P-wave tomography between boreholes up to 1000 m ...

Showcase

S-Wave Borehole Source

The borehole source BIS-SH generates horizontally polarized shear waves (SH) and compressional waves (P). This source is used for crosshole testing and S-wave tomography. The S-wave tomography links high-resolution borehole geophysics to soil dynamic properties. S-waves need to be generated with different polarization in order to be easily recognized during data processing. Due to its shorter ...