Propagation of guided waves in a fluid layer bounded by two viscoelastic transversely isotropic solids

Ashour, Ahmed S (2000) Propagation of guided waves in a fluid layer bounded by two viscoelastic transversely isotropic solids. Journal of Applied Geophysics, 44 (4). pp. 327-336. ISSN 0926-9851

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Abstract

The analysis of Stoneley wave propagation in a fracture is essential for the identification and evaluation of fracture parameters from the borehole Stoneley wave. Also, it is important for many geophysics considerations, e.g. for tremor and long-period events observed in volcanoes and geothermal areas. In this paper, we investigate the guided waves propagation in a fluid layer lying between two viscoelastic vertically transversely isotropic media. The viscoelastic mechanism models the attenuation due to the presence of fluid saturation in the rock. A model based on the superposition of three inhomogeneous partial plane waves: one in the fluid and two heterogeneous waves in the solid is developed. The dispersion equation is obtained for this case. A numerical solution is carried out to obtain the guided wave velocity and attenuation coefficient. The results of this investigation show that there is a strong correlation between the velocity dispersion and attenuation of Stoneley wave and the anisotropic parameters of the medium especially in a sandstone fast. medium. q2000 Elsevier Science B.V. All rights reserved.

Item Type:	Article (Journal)
Additional Information:	2730/31405
Uncontrolled Keywords:	Fractures; Stoneley waves; Dispersion; Phase velocity; Attenuation
Subjects:	G Geography. Anthropology. Recreation > GE Environmental Sciences Q Science > Q Science (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Science
Depositing User:	Nor Fathiah Jumiran (Part Time)
Date Deposited:	16 Aug 2013 12:53
Last Modified:	16 Aug 2013 13:03
URI:	http://irep.iium.edu.my/id/eprint/31405

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