Analysis for oblique wave propagation across filled joints based on thin-layer interface model

AVO inversion for a non-welded interface: estimating compliances of a fluid-filled fracture

“…In this vein, various earlier studies showed that a non-welded interface model approximates very well the reflection and transmission coefficients of a thin layer, provided the ratio of the thickness of the layer to the wavelength of radiation is small (e.g. Rokhlin & Wang 1991;Liu et al 1995;Li et al 2014). The wavelength of P waves in our experiment is approximately 6 mm or greater, which is larger than (approximately 0.2 mm).…”

“…In field-scale seismic measurements, the concept of reflection/transmission response from a non-welded interface is useful to study large fractures, such as rock joints (e.g. Cook 1992;Li et al 2014). The concept is also applicable to macroscopic faults: Worthington & Hudson (2000) discussed the use of non-welded interfaces to predict VSP responses of geological faults and Kame et al (2014) discussed the feasibility of this concept to monitor earthquake cycle at a plate boundary.…”

An improved equivalent viscoelastic medium method for wave propagation across layered rock masses

“…The interaction between the stress waves and two sides of a joint has been addressed by Li [21]. Later, Li et al [34] extended the interaction analysis for wave propagation across an interface between two welded media. In this study, we use their derivation for the particle velocities induced by P-and S-waves at the interface between two equivalent viscoelastic media, that is,…”

Laboratory estimation of fracture compliance of a fluid-filled fracture using AVO response of a nonwelded interface

“…For example, in laboratory-scale experiments, reflection and transmission coefficients are used to characterize the compliances of natural fractures (e.g., Pyrak-Nolte et al, 1990;Lubbe et al, 2008) and to monitor the frictional strength of rough solid surfaces (Nagata et al, 2008). In field-scale seismic measurements, the concept of reflection/transmission response from a nonwelded interface is useful to study large fractures such as rock joints (e.g, Cook, 1992;Li et al, 2014). The concept is also applicable to macroscopic faults: Worthington and Hudson (2000) discussed the use of nonwelded interfaces to predict VSP responses of geological faults and Kame et al (2014) discussed the feasibility of this concept to monitor earthquake cycle at a plate boundary.…”