Internal wave contributions to ocean remote sensing by acoustic scintillation analysis
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Internal wave contributions to ocean remote sensing by acoustic scintillation analysis

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Internal wave contributions to ocean remote sensing by acoustic scintillation analysis

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    Previous theoretical developments describing the use of acoustic scintillation analysis for the measurement of currents and microscale variability along horizontal acoustic paths required that Taylor's frozen-flow hypothesis be satisfied. Refractive irregularities were assumed to be passive tracers that were simply advected by the mean flow across the propagation path. This requirement restricted the application of the scintillation technique to well-mixed turbulent flows. Two propagation geometries were considered in detail. The most simple comprised a single transmitter and two spaced-receivers. This configuration allowed the retrieval of the pathintegrated transverse current and microscale variability as characterized by the refractive index structure parameter C„. With more complicated spatial-filter systems comprising linear transmitting and receiving arrays it was also shown that profiles of the transverse current and C„ along the path could in principle be retrieved.
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