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Table 2 Comparison of P-wave velocities from the anisotropic characterization (Table 1) with other experiments for the shaly facies

From: Seismic anisotropy of Opalinus Clay: tomographic investigations using the infrastructure of an underground rock laboratory (URL)

 

Manukyan et al. (2012)

Nicollin et al. (2008)

Schuster et al. (2017)

Zappone et al. (2021)

Our study

\(v_P^\perp\) [km/s]

2.340

2.490

2.600

2.280

2.551a

\(v_P^\parallel\) [km/s]

3.110

3.330

3.100

2.870

3.217

  1. a\(v_P^\perp\) has a \(\sim 45^\circ\) deviation of the symmetry axis and is only perpendicular to the strike direction of the bedding