Extending the Capability of the Complex Effective Depth Approximation


  • David J. Thomson 733 Lomax Road, Victoria, BC, Canada, V9C 4A4
  • Gary H. Brooke Brooke Numerical Services, 3440 Seaton Street, BC, Canada, V8Z 3V9


In this paper, we extend the effective-depth method to include two boundary features that can effect propagation in shallow water. First, we show how the coherent scattering effects due to a rough sea-surface can be accommodated within the context of the Kirchhoff approximation. Second, we demonstrate how the basic equations can be readily modified to take into account a layered ocean bottom structure. As a result, the complex effective-depth approach can be applied without difficulty to a more general class of shallow water propagation environments. Following a brief summary of the necessary equations and iteration algorithm, we present an example that exhibits the effects on normal mode propagation for a Pekeris type waveguide having a layered ocean bottom and a rough surface.

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How to Cite

Thomson DJ, Brooke GH. Extending the Capability of the Complex Effective Depth Approximation. Canadian Acoustics [Internet]. 2012 Dec. 1 [cited 2024 Jun. 20];40(4):53-4. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/2584



Proceedings of the Acoustics Week in Canada