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A Modified Biot/Squirt Model of Sound Propagation in Water-Saturated Sedment |
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| Authors: | |
| Institution: | 1.Department of Geophysics,East China University of Technology,Nanchang,China;2.Second Institute of Oceanography,State Oceanic Administration,Hangzhou,China;3.Department of Earth and Atmospheric Sciences,University of Houston,Houston,USA;4.Tyumen Industrial University,Tyumen,Russia;5.Earth exploration science and technology,Jilin University,Changchun,China;6.Bureau of Geophisical Prospecting INC.,CNPC,Zhuozhou,China |
| Abstract: | A modified Biot/Squirt flow model was developed. The difference between MBISQ and BISQ models is the expression for the porosity differential. Numerical analysis shows that the acoustic dispersion predicted by MBISQ is much higher than by BISQ. Investigations of the effects of permeability, viscosity, and squirt flow length on velocity and attenuation indicate that the behavior of MBISQ agrees with that of the BISQ model. The result of sediment acoustic inversion based on MBISQ was more reasonable than the result of BISQ model. |
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