Abstract
A parabolic equation model has been developed to study transmission in the Florida Straits and to interpret the results of reciprocal transmission experiments. The model source is both broadband and narrow beam. The bandwidth makes possible prediction of pulse arrival patterns and travel times. The narrow beam shows the path of sound energy between source and receiver. Both arrival times and sound paths are necessary to invert acoustic measurements to give oceanographic measurements of currents and water temperatures. Color graphic displays are used to demonstrate ray-type paths through the medium, using environmental data as inputs; model results are compared with results of pulse reciprocal transmission experiments for several geometries and range-dependent soundspeed profiles and bottoms.
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