Investigation of Parametric Acoustic Response of a Fluctuating Ocean
WASHINGTON STATE UNIV PULLMAN DEPT OF PHYSICS
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The long-term goals are 1 to take advantage of the ever-changing ocean environments effects in order to provide a more complete understanding of long-range acoustic pulse propagation including extracting parameters characterizing the ocean environment, for example, by linking them to range scales of temporal decorrelations in arriving signals, 2 understanding the extent of fundamental limitations on ray-based acoustic tomography of particular interest is the breakdown range of semiclassical methods, and 3 to address important basic physics issues that arise in the ocean problem, but within a more general context. There are two primary scientific objectives of this work 1 to begin developing a geometric acoustics theory that addresses parametrically varying ocean environments in the presence of ray chaos, determines what information survives under such conditions, and determines how to extract it, and 2 to determine the sensitivity of acoustic wavefields to relevant ocean environment parameters thereby connecting the scale of changes in the ocean to range scales of wavefield correlation decay.
- Physical and Dynamic Oceanography