Articles | Volume 16, issue 4/5
https://doi.org/10.5194/se-16-333-2025
https://doi.org/10.5194/se-16-333-2025
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

Data sets

Crosshole Seismic Survey Data in the tripod boreholes Kathrin Behnen https://doi.org/10.3929/ethz-b-000678987

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Short summary
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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