Influence of Saturation Degree on Deamplification of P₁ Wave through Multilayered Porous Media

Abstract:

The deamplification model developed by Zendagui et al. has been adapted in this study for the case of P₁ wave propagation in porous media in order to investigate the effect of saturation degree on motion coherency at depth. The input wave amplitude distribution function is generated compatibly with the suitable free field coherency model and the top wave amplitudes are evaluated using the transfer matrix method following the Biot’s theory. The results show that even if the saturation degree decreases slightly below the complete saturation, it influences the coherencies of horizontal and vertical motion due to P₁ wave incidences. Elsewhere, the generation process shows that in this case, the wave front content, necessary to produce a coherency identical to the Luco and Wong model at the free field, is more focus with less intensity than required in the case of a complete saturation.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 1570-1573
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.1570
• Online since: July 2014
• Authors: Mahdia Yasmina Mehiaoui Hadjebar*, Mohamed Hadid, Mounir Berrah
• Keywords: Coherency, Deamplification, P₁ Wave, Porous Media, Saturation Degree

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