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Articles | Volume 16, issue 4/5
Articles | Volume 16, issue 4/5
https://doi.org/10.5194/se-16-333-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-16-333-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 16, issue 4/5
Research article
 | 
15 May 2025
Research article |  | 15 May 2025

Understanding seismic anisotropy in the Rotondo granite: investigating stress as a potential source

Kathrin Behnen, Marian Hertrich, Hansruedi Maurer, Alexis Shakas, Kai Bröker, Claire Epiney, María Blanch Jover, and Domenico Giardini

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Cited articles

Al-Harthi, A. A.: Effect of planar structures on the anisotropy of Ranyah sandstone, Saudi Arabia, Eng. Geol., 50, 49–57, https://doi.org/10.1016/S0013-7952(97)00081-1, 1998. a, b, c
Amann, F., Gischig, V., Evans, K., Doetsch, J., Jalali, R., Valley, B., Krietsch, H., Dutler, N., Villiger, L., Brixel, B., Klepikova, M., Kittilä, A., Madonna, C., Wiemer, S., Saar, M. O., Loew, S., Driesner, T., Maurer, H., and Giardini, D.: The seismo-hydromechanical behavior during deep geothermal reservoir stimulations: open questions tackled in a decameter-scale in situ stimulation experiment, Solid Earth, 9, 115–137, https://doi.org/10.5194/se-9-115-2018, 2018. a
Aminzadeh, A., Petružálek, M., Vavryčuk, V., Ivankina, T. I., Svitek, T., Petrlíková, A., Staš, L., and Lokajíček, T.: Identification of higher symmetry in triclinic stiffness tensor: Application to high pressure dependence of elastic anisotropy in deep underground structures, Int. J. Rock Mech. Min., 158, 105168, https://doi.org/10.1016/j.ijrmms.2022.105168, 2022. a
Barton, N.: Rock quality, seismic velocity, attenuation and anisotropy, CRC press, ISBN 0-415-39441-4, 2006. a, b, c, d
Behnen, K.: Crosshole Seismic Survey Data in the tripod boreholes (BedrettoLab), ETH Zürich [data set], https://doi.org/10.3929/ethz-b-000678987, 2024. a
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Several cross-hole seismic surveys in the undisturbed Rotondo granite are used to analyze the seismic anisotropy in the Bedretto Lab, Switzerland. The P and S1 waves show a clear trend of faster velocities in the NE–SW direction and slower velocities perpendicular to it, indicating a tilted transverse isotropic velocity model. The symmetry plane is mostly aligned with the direction of maximum stress, but also the orientation of fractures is expected to influence the velocities.
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