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Update on recent observations in multi-component seismic reflection profiling

Examples of multi-component shallow seismic reflection profiling from different environments in eastern Canada are presented to examine the benefits of shear wave reflection data and the latest developments in acquisition methodology, as well as our evolving understanding of the complex
nature of seismic wave propagation. Examination of the wave motion through multi-component recording shows that, regardless of the source orientation, shear wave reflections may be polarized in varying directions. In "soft" soils characterized by low shear wave velocities, extremely high-resolution
shear wave reflection sections can be obtained, with the highest-resolution data related to in-line or vertical components of motion. Data recorded in the transverse (SH) direction are generally somewhat lower in frequency but may be better able to penetrate into more compact (higher velocity)
sediments. Multicomponent recording provides the capacity to record all data, without having to know the main shear wave polarization direction prior to data acquisition.

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The Great Lakes - St. Lawrence Research Inventory is an
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up-to-date information about research projects in the
Great Lakes - St. Lawrence Region.