Low-Frequency Sound Propagation in an Underwater Waveguide with a Giant Gassy Pockmark

• Published in: Journal of marine science and engineering Vol. 11; no. 1; p. 211
• Main Authors: Komissarov, Alexander A., Makarov, Denis V., Kholmogorov, Andrey O., Shakirov, Renat B.
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 01.01.2023
• Subjects: Acoustic waveguides; Acoustics; Anomalies; Attenuation; gas-saturated sediment; Gases; low-frequency sound; ocean acoustics; pockmark; Propagation; Saturation; Sediments; Sound; Sound propagation; Sound velocity; Sound waves; Tomography; Wave attenuation; Wave propagation; wavefield propagator; Waveguides; Russia

Bottom formations known as pockmarks basically arise due to extensive gas emission. Active pockmarks are characterized by exceptionally high gas saturation and substantially reduced sound speed. The latter circumstance leads to strong attenuation of sound waves contacting with a pockmark. In the pre...