2019_programme: LONG-RANGE SOUND PROPAGATION IN THE CANADA BASIN



  • Session: 09. Acoustics in polar environments
    Organiser(s): Tegowski Jaroslaw
  • Lecture: LONG-RANGE SOUND PROPAGATION IN THE CANADA BASIN [invited]
    Paper ID: 976
    Author(s): Duda Timothy F, Zhang Weifeng G, Lin Ying-Tsong, Newhall Arthur E
    Presenter: Duda Timothy
    Presentation type: oral
    Abstract: The existence of a sound duct created by the presence of waters of Pacific origin in the Canada Basin and Beaufort gyre allows sound to travel great distances with little attenuation. However, the water mass layering that creates the duct varies in time and space, and the ducting effect also varies. Output from a surface-forced hydrodynamic model of the region is analyzed to learn about the formation and flow of the water masses, and about eddies and filaments that strengthen and weaken the duct. The model results are then used for broadband two-dimensional parabolic equation modeling of sound to learn about seasonal variation of propagation in the region, as well as statistics of propagation variability.\n
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  • Corresponding author: Dr Duda Timothy
    Affiliation: Woods Hole Ocanographic Institution
    Country: United States
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