Articles | Volume 10, issue 4
https://doi.org/10.5194/se-10-1321-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-10-1321-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Seismic attenuation and dispersion in poroelastic media with fractures of variable aperture distributions
Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
Nicolás D. Barbosa
Department of Earth Sciences, University of Geneva, Geneva, Switzerland
J. Germán Rubino
CONICET, Centro Atómico Bariloche – CNEA, San Carlos de Bariloche, Argentina
Beatriz Quintal
Institute of Earth Sciences, University of Lausanne, Lausanne, Switzerland
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Short summary
We quantify the effects that 3-D fractures with realistic distributions of aperture have on seismic wave attenuation and velocity dispersion. Attenuation and dispersion are caused by fluid pressure diffusion between the fractures and the porous background. We show that (i) both an increase in the density of contact areas and a decrease in their correlation length reduce attenuation and (ii) a simple planar fracture can be used to emulate the seismic response of realistic fracture models.
We quantify the effects that 3-D fractures with realistic distributions of aperture have on...