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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.

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Rapid deployment

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Deployment of three-component towed geophones

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Can be used with an accelerated mass or a vibrating source

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Yield up to 3 km/day on motorable road

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Summer and winter operation

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Used for seismic reflection and MASW2D surveys

Flexible deployment

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Use of regular or accelerated sledgehammer, or dynamite as needed

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Deployment of up to 48 measurement stations for seismic refraction or MASW surveys

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Deployment of up to 156 three-component wireless stations for high-resolution combined seismic

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Operation summer and winter, in all types of environment

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Seismic refraction

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Ideal for sites with unconsolidated deposits <20m thick

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Allows bedrock surface mapping

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Provides clues about the presence of fluid and the quality of the rock

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Layer or tomography interpretation of Vp velocities

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Seismic reflection

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Ideal for depths 10 -  100 m

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Often used for bedrock mapping

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Allows mapping of Vs

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Allows to differentiate the types of unconsolidated deposits (ex: sand vs clay)

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MASW-1D

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Provides a vertical profile of Vs for the site investigated

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Deployment possible in urban or remote areas

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Possibility of coupling with another seismic method to increase control over interpretation

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MASW - 2D

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  Ideal for depths 0 – 30m

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Allows mapping of stratigraphic units

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Can be produced at the same time as seismic reflection

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Useful for hydrogeological and geotechnical characterization

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Vertical seismic profile ( downhole )

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Deployment in an existing borehole

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Allows high vertical resolution of seismic velocities P and S

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Use of a three-component sensor for better identification of propagation modes

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masw
downhole
reflexion
refraction
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