Experimental Studies of Pulsed Signal Propagation from the Shelf Zone to the Continental Slope and then to the Deep Sea
Results of an experimental study of features of low-frequency phase-manipulated signals propagation from the shelf to deep sea are presented. Regularities of formation of pulse characteristics that are measured at different receiving points of the signals with central frequencies from 366 to 1250 Hz, the maximal distance from the source being 557 km are analyzed. It is experimentally demonstrated that, in the presence of a negative sound velocity gradient in the near bottom layer on the shelf with a small bottom slope, the choice of the source position at the shelf bottom near the shoreline provides the formation of a continuous illumination zone in the deep sea near the underwater sound channel axis and a stable pulse characteristic with one -two main sound energy arrivals. In isothermal or in the presence of a small negative temperature gradient conditions on the shelf were registered up to six acoustic energy arrivals. Possibilities for practical application of the results obtained from the experiment are discussed.
V.A.Akulichev A.V.Burenin Yu.N.Morgunov D.S.Strobykin
V.I.Il`ichev Pacific Oceanological Institute,Russian Academy of Sciences,43,Baltiyskaya Street,Vladivostok,690041,Russia
国际会议
The 10th Western Pacific Acoustics Conference(第十届西太平洋声学会议WESPAC X)
北京
英文
1-8
2009-09-21（万方平台首次上网日期，不代表论文的发表时间）