2019_programme: TIME-FREQUENCY AND WARPING ANALYSIS OF THE SOUND FIELD MODAL COMPOSITION IN VARIABLE SHALLOW WATER ENVIRONMENT. SWARM’95 EXPERIMENT AS A CASE STUDY

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  • Session: 26. Sound propagation in shallow and deep water
    Organiser(s): N/A
  • Lecture: TIME-FREQUENCY AND WARPING ANALYSIS OF THE SOUND FIELD MODAL COMPOSITION IN VARIABLE SHALLOW WATER ENVIRONMENT. SWARM’95 EXPERIMENT AS A CASE STUDY
    Paper ID: 889
    Author(s): Yarina Marina , Katsnelson Boris
    Presenter: Yarina Marina
    Presentation type: oral
    Abstract: Broadband air-gun data from SWARM’95 experiment in shallow water area of Atlantic shelf are used to analyze mode filtering using Warping Transform (WT). Sound intensity fluctuations in the presence of moving nonlinear internal waves are considered on the base of WT. Results are compared with mode filtering using vertical line array (VLA). It is shown that Warping Transform allows us to carry out mode filtering in shallow water environment, changing in time and space in the presence of moving nonlinear internal waves by single hydrophone only. Temporal variations of mode composition in given case have properties specific for manifestation of horizontal refraction in the form of focusing/defocusing in horizontal plane [This work was supported by Israel Science Foundation, grant 565/15].
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  • Corresponding author: Ms Yarina Marina
    Affiliation: University of Haifa
    Country: Israel
    e-mail:

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