Articles | Volume 11, issue 3
https://doi.org/10.5194/se-11-855-2020
https://doi.org/10.5194/se-11-855-2020
Research article
 | 
08 May 2020
Research article |  | 08 May 2020

Azimuth-, angle- and frequency-dependent seismic velocities of cracked rocks due to squirt flow

Yury Alkhimenkov, Eva Caspari, Simon Lissa, and Beatriz Quintal

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Cited articles

Adelinet, M., Fortin, J., Guéguen, Y., Schubnel, A., and Geoffroy, L.: Frequency and fluid effects on elastic properties of basalt: Experimental investigations, Geophys. Res. Lett., 37, L02303, https://doi.org/10.1029/2009GL041660, 2010. a
Alkhimenkov, Y., Caspari, E., Gurevich, B., Barbosa, N. D., Glubokovskikh, S., Hunziker, J., and Quintal, B.: Frequency-dependent attenuation and dispersion caused by squirt flow: Three-dimensional numerical study, Geophysics, 85, 1–71, 2020. a, b, c, d, e, f
Almqvist, B. S. and Mainprice, D.: Seismic properties and anisotropy of the continental crust: predictions based on mineral texture and rock microstructure, Rev. Geophys., 55, 367–433, 2017. a
Amalokwu, K., Best, A. I., and Chapman, M.: Effects of aligned fractures on the response of velocity and attenuation ratios to water saturation variation: a laboratory study using synthetic sandstones, Geophys. Pros., 64, 942–957, 2016. a
Andrä, H., Combaret, N., Dvorkin, J., Glatt, E., Han, J., Kabel, M., Keehm, Y., Krzikalla, F., Lee, M., Madonna, C., et al.: Digital rock physics benchmarks – Part I: Imaging and segmentation, Comput. Geosci., 50, 25–32, 2013a. a
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Short summary
We perform a three-dimensional numerical study of the fluid–solid deformation at the pore scale. We show that seismic wave velocities exhibit strong azimuth-, angle- and frequency-dependent behavior due to squirt flow between interconnected cracks. We conclude that the overall anisotropy mainly increases due to squirt flow, but in some specific planes it can locally decrease as well as increase, depending on the material properties.