DTIC ADA1016825: On Wind Induced Underwater Ambient pdf

DTIC ADA1016825: On Wind Induced Underwater Ambient

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Description of the Book:

A study of the wind dependence of underwater ambient noise is presented. This study includes a general theory of noise generation, status of available theories, and some recent noise measurements. The general theory indicates that the stresses and the motion of sea-air boundary contribute as a major source of wind-induced noise, and that the boundary conditions play very important roles. Even though several theories have been developed in recent years to investigate specific mechanisms of wind-induced underwater noise, careful evaluations of the theories are suggested. The wind dependence of underwater ambient noise can be identified in the frequency range 1-500 Hz (and higher) from available data. Due to possible interferences of shipping noise, system noise, and flow turbulence near the hydrophone, additional field measurements are necessary to obtain quantitative assessments of wind-induced noise in the frequency range 1-100 Hz. Recommendations are given for future research work on wind-induced noise

• Creator/s: Defense Technical Information Center
• Date: 3/1/1981
• Year: 1981
• Book Topics/Themes: DTIC Archive, Li, Huon, NAVAL OCEAN RESEARCH AND DEVELOPMENT ACTIVITY NSTL STATION MS, *WIND, *AMBIENT NOISE, *UNDERWATER SOUND, STRESSES, BOUNDARY LAYER, ACOUSTIC MEASUREMENT, DIFFERENTIAL EQUATIONS, WIND VELOCITY, AIR WATER INTERACTIONS, VERY LOW FREQUENCY, EXTREMELY LOW FREQUENCY

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