A preliminary study of the geoacoustic parameters of gassy sediment in St. Margaret's Bay, Nova Scotia
Keywords:
Acoustics, Correlation methods, Geophysics, Mathematical models, Parameter estimation, Gassy sediments, Geoacoustic parameters, Simulated signalsAbstract
The geoacoustic parameters of gassy sediment of St. Margert's Bay, Nova Scotia, were investigated. The geoacoustic parameters of gassy sediment such as sound speed (cs), attenuation (?s), and density were analyzed at frequencies below 500 Hz by comparing the measured and modeled transmission loss (TL) as function of range. A low-frequency underwater source was towed along a straight transit and two set of TL was measured for each hydrophone of the vertical array and simulated signal propagating over seabed models using a parabolic equations. The acoustic propagation of simulated signals were modeled for two different seabed models to calculate the TL vs range. These curves are then compared to measure TL from real underwater sources. It was observed that geoacoustic parameters of gassy layers showed correlation between real and modeled TL. Result shows that geoacoustic model for St. Margert's Bay produce TL match at frequencies below 500 Hz.Downloads
Published
How to Cite
Issue
Section
License
Copyright on articles is held by the author(s). The corresponding author has the right to grant on behalf of all authors and does grant on behalf of all authors, a worldwide exclusive licence (or non-exclusive license for government employees) to the Publishers and its licensees in perpetuity, in all forms, formats and media (whether known now or created in the future)
i) to publish, reproduce, distribute, display and store the Contribution;
ii) to translate the Contribution into other languages, create adaptations, reprints, include within collections and create summaries, extracts and/or, abstracts of the Contribution;
iii) to exploit all subsidiary rights in the Contribution,
iv) to provide the inclusion of electronic links from the Contribution to third party material where-ever it may be located;
v) to licence any third party to do any or all of the above.