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Intimate '96: shallow water tomography in the sea of the condemned
Coelho, Emanuel; Jesus, S. M.; Stephan, Yang; Demoulin, Xavier; Porter, Michael B.As is well-known, the tidal force of the moon and the sun can cause notable changes in the sea level. Besides this so-called barotropic effect, the tidal force also drives internal waves in a daily rhythm. Thus, the internal wave spectrum is often dominated by a single component with perhaps 10 km from crest to crest. This ‘‘internal tide’’ tends to propagate toward shore and has its greatest height near the sh...
Exploiting reliable features of the ocean channel response
Porter, Michael B.; Jesus, S. M.; Stephan, Yann; Demoulin, Xavier; Coelho, EmanuelModelling sound propagation in shallow water is notoriously difficult. The main difficulties are, of course, ocean variability characteristic of coastal waters and the typpicaly downward refracting profiles that make the acoustic field extremely sensitive to the bottom characteristics. Meanwhile accurate prediction of transimission loss curves at a single frequency requires that the relative phase of each surfa...
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