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Abstract

Summary

Multicomponent seismic data allow the study of shear (S) waves, which is of great interest to characterize, for example, anisotropy. We present a 9C seismic data analysis workflow that involves the acquisition of multicomponent seismic data using a sledgehammer striking a prismatic wedge as vectorial seismic source and 3C receivers. Inclined impacts on the two opposing sides of the wedge are rotated into a vertically-and horizontally-directed source. Advantages of this source are the simultaneous recording of horizontally-and vertically-directed sources with uniform coupling. Re-orienting the wedge allows acquiring data with orthogonally-oriented horizontally-directed sources. A 4C rotation of the two source and two receiver horizontal components allows then determining, for example, the apparent arrival direction of two orthogonally-polarized direct S-waves, which may differ from the source-receiver direction. While applied here to find the arrival direction of the direct S-wave, our workflow can also be used to study anisotropy through analysis of S-wave splitting.

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/content/papers/10.3997/2214-4609.201601639
2016-05-30
2024-04-19

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References

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201601639
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9C seismic data acquisition for near-surface applications: recording, waveform reciprocity and 4C rotation
Conference Proceedings 2016, 1 (2016); https://doi.org/10.3997/2214-4609.201601639
/content/papers/10.3997/2214-4609.201601639
/content/papers/10.3997/2214-4609.201601639
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