Modares Mechanical Engineering

Modares Mechanical Engineering

Comprehensive Investigation of Effects of Environmental Parameters on Shallow Water Sound Propagation

Document Type : Original Research

Authors
Mohammad Rezaee 1
Ehsan Solki 2
Kobra Nasirbaghban 3
1 Iran Society of Acoustical Sciences
2 National Infrasound Laboratory
3 Amirkabir University of Technology
10.48311/mme.24.7.467
Abstract
Due to lower cost compared to field measurement, simulation of sound propagation is considerably favorable for acoustic researchers. One of most optimized methods in this regard is PE (paraboloic Equation), which gives detailed low cost results especially in the low and mid frequencies. On the other hand, most of the human interaction with the water bodies are in the so called shallow water region, where PE is the most common method of acoustic simulation. In this study, effects of environmental parameters on transmission loss are investigated in the range of the scale of few tens of kilometers. The results show subsurface flows and sound speed profile variations in the course of the range, have the least effects and bottom properties, specifically the attenuation factor, are the most effective parameter in the low frequency sound propagation. On the other side, in the range of higher frequencies (more than 1000 Hz), seasonal variation of sound speed profile has the most efficient effect
Keywords
Sound Propagation
Transmission Loss
Shallow Water
Sound Speed Profile
Bottom Properties

Subjects

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Modares Mechanical Engineering
Volume 24, Issue 7
June 2024
Pages 467-474