Oceanic acoustic rays in the deep six sound channel

Miller, Jack C.

doi:10.1121/1.387564

Cited by 8 publications

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“…Several models for the sound speed profile have been used to model the propagation. (5), (6), (7) The cycle distance has been studied extensively. The width has been studied in (7) using rays bounded by bottom interaction and a mixed layer near the surface.…”

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Performance of Passive and Active Sonars in the Philippine Sea

Baggeroer¹

2013

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We have the long term goals of understanding several aspects of passive and active sonar performance in the Philippine Sea when there is a robust environmental characterization of the sea floor and water column plus accurate source/receiver positions. OBJECTIVESThe objectives this year have been to model the features of a CZ which we observed in the PhilSea09 experiment. The data from this found very abrupt transitions and into the CZ's and narrow widths for them. We note that not all CZ's "focus", i.e. sharp edges as we observed in the Philippine Sea. This feature has been noted by Brekhovskikh and Munk where they noted that such zones tend to remain clustered for many CZ's. (3),(5) We are also concerned with the width of the transitions as well as the stability of signals once a receiver is within a CZ. These factors have significant implications for source localization at CZ ranges.The CZ is one of the most notable features of deep ocean sound propagation. Several models for the sound speed profile have been used to model the propagation. (5), (6), (7) The cycle distance has been studied extensively. The width has been studied in (7) using rays bounded by bottom interaction and a mixed layer near the surface. However, the sharpness of the edge has not been examined. Efforts last year measured the characteristics of the convergence zone (CZ) and this year we have started to model the edge sharpness and width.

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confidence: 99%