| Issue |
E3S Web Conf.
Volume 224, 2020
Topical Problems of Agriculture, Civil and Environmental Engineering (TPACEE 2020)
|
|
|---|---|---|
| Article Number | 02011 | |
| Number of page(s) | 8 | |
| Section | Information Technologies for Environmental Sustainability | |
| DOI | https://doi.org/10.1051/e3sconf/202022402011 | |
| Published online | 23 December 2020 | |
Application of the extended poroacoustic model of marine sediments to the calculation of the sound reflection coefficient from the seabed
Sevastopol State University, Universitetskaya 33, Sevastopol 299053, Russia
* Corresponding author: vlisiutin@mail.ru
The article consider the application of the extended poroacoustic theory of the propagation of stress waves in marine sediments to the calculation of the coefficient of sound reflection from the seabed. It is proposed to calculate the reflection coefficient using a simple acoustic formula, replacing the equilibrium density of the porous medium in it with the effective density. The main assumptions are given and the dispersion relations of the extended poroacoustic model of unconsolidated marine sediments are derived (GSED). Model GSED allows calculating the frequency dependences of the propagation velocity and the attenuation coefficients of sound and shear waves in marine sediments. Internal friction between granules and viscous losses due to relative fluid movement are taken into account. The adequacy of GSED model is shown by comparison with experimental data taken from open sources. The results of calculating the reflection coefficient within the framework of the proposed method are compared with experimental data.
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.