UACE: Application of 3D Acoustics to the CTBTO Processing System

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    • Day: June 16, Monday
        Location / Time: A. TERPSIHORI at 11:20-11:40
    • Last minutes changes: -
    • Session: 04. Comprehensive Nuclear-Test-Ban Treaty Monitoring, and its Civil and Scientific Applications
      Organiser(s): Georgios Haralabus, Mario Zampolli, Tiago Oliveira, Mark Prior
      Chairperson(s): Georgios Haralabus, Tiago Oliveira
    • Lecture: Application of 3D Acoustics to the CTBTO Processing System
      Paper ID: 2333
      Author(s): Kevin Heaney, Tiago Oliveira, Mark Prior, Christos Saragiotis
      Presenter: Kevin Heaney
      Abstract: For low frequency propagation (< 20 Hz) the ocean is ostensibly flat, with seafloor topography driving propagation. Refraction and diffraction around islands, ocean ridges and continents means that the usual Nx2D methodology for running acoustic propagation is no longer accurate. The United Nations Comprehensive Test Ban Treaty Organization has deployed a hydrophone network to detect and localize at-sea nuclear testing. The system for localization is based upon 2D adiabatic mode propagation models computed in the early 1990s. In this paper we demonstrate the need for using 3D acoustic propagation and a methodology for generating blockage maps and travel time tables for use in the automated association algorithm run at CTBTO.
    • Corresponding author: Dr Kevin Heaney
      Affiliation: Applied Ocean Sciences
      Country: United States

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