Seismic attenuation: effects of interfacial impedance on wave-induced pressure diffusion

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Serval ID
serval:BIB_91F89C0C58ED
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Seismic attenuation: effects of interfacial impedance on wave-induced pressure diffusion
Journal
Geophysical Journal International
Author(s)
Qi Q., Müller  T.M., Rubino  J.G.
ISSN
1365-246X
0956-540X
Publication state
Published
Issued date
2014
Peer-reviewed
Oui
Volume
199
Pages
1677-1681
Language
english
Abstract
Seismic attenuation and dispersion in layered sedimentary structures are often interpreted in terms of the classical White model for wave-induced pressure diffusion across the layers. However, this interlayer flow is severely dependent on the properties of the interface separating two layers. This interface behaviour can be described by a pressure jump boundary condition involving a non-vanishing interfacial impedance. In this paper, we incorporate the interfacial impedance into the White model by solving a boundary value problem in the framework of quasi-static poroelasticity. We show that the White model predictions for attenuation and dispersion substantially change. These changes can be attributed to petrophysically plausible scenarios such as imperfect hydraulic contacts or the presence of capillarity.
Keywords
Seismic attenuation, Wave propagation, Acoustic properties
Web of science
Publisher's website
Open Access
Yes
Create date
16/07/2018 15:45
Last modification date
25/09/2019 7:10
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