Acoustic Implications of a New Model
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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We attempt to show that the use of stochastic inverse methods allows us to precisely test proposed models of oceanic dynamical structure. It is the integrative property of the propagating acoustic wave that enables us to view ocean dynamics on scales that would be impossible with traditional ocean instrumentation. Unfortunately, because there has been a lack of propagation experiments conducted where the ocean dynamics are well understood, we are unable to fully demonstrate the use of the concepts we present. Additional investigations are required. Theoretical and numerical studies of acoustics in numerical oceans can provide new information on the scales of ocean dynamics that are important for sound propagation. In turn, this information will tell us how thoroughly we need to model ocean variability in order to predict propagation characteristics. We show that the important scales of ocean variance are much larger than the acoustic wavelength, when the ranges correspond to standard rangefrequency combinations. Finally, we present some ideas for future work using acoustics to verify a new model, and discuss the temporal and spatial scales for a possible experiment.
- Physical and Dynamic Oceanography