Seismic methods
The geostack team has unique expertise in seismic applied to near-surface settings. With an acquisition system designed specifically by its technical team and inspired by university research, we have participated in a large number of characterization projects at different scales for industrial, academic and government partners. We are equipped for projects of all sizes and are very agile in adapting to your needs and meeting your objectives.
Rapid deployment
Deployment of three-component towed geophones
Can be used with an accelerated mass or a vibrating source
Yield up to 3 km/day on motorable road
Summer and winter operation
Used for seismic reflection and MASW2D surveys
Flexible deployment
Use of regular or accelerated sledgehammer, or dynamite as needed
Deployment of up to 48 measurement stations for seismic refraction or MASW surveys
Deployment of up to 156 three-component wireless stations for high-resolution combined seismic
Operation summer and winter, in all types of environment
Seismic refraction
Ideal for sites with unconsolidated deposits <20m thick
Allows bedrock surface mapping
Provides clues about the presence of fluid and the quality of the rock
Layer or tomography interpretation of Vp velocities
Seismic reflection
Ideal for depths 10 - 100 m
Often used for bedrock mapping
Allows mapping of Vs
Allows to differentiate the types of unconsolidated deposits (ex: sand vs clay)
MASW-1D
Provides a vertical profile of Vs for the site investigated
Deployment possible in urban or remote areas
Possibility of coupling with another seismic method to increase control over interpretation
MASW - 2D
Ideal for depths 0 – 30m
Allows mapping of stratigraphic units
Can be produced at the same time as seismic reflection
Useful for hydrogeological and geotechnical characterization
Vertical seismic profile ( downhole )
Deployment in an existing borehole
Allows high vertical resolution of seismic velocities P and S
Use of a three-component sensor for better identification of propagation modes
