Physical Mechanisms Underlying the Acoustic Signatures of Breaking Waves

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Authors
  1. Dallas, C.
  2. Tollefsen, C.D.S.
Corporate Authors
Defence Research and Development Canada, Atlantic Research Centre, Halifax NS (CAN)
Abstract
The characteristics of waves breaking along the shoreline have been extensively researched over the past century, including wave breaking motions and aftereffects, as well as the relationships among bathymetry, wave shape (plunging, spilling, or surging) and wave breaking location. The resulting underwater sound generation has also been well studied and has been elucidated as the individual and collective oscillations of bubbles and bubble plumes produced by the breaking waves. In spite of this large body of research, the airborne sound generated by breaking waves is not as well-understood. Bolin and A° bom proposed a model in which sound from the underwater bubble clouds propagate through the air-water interface, but also concluded that the main airborne sound generation mechanism remains a mystery. The aim of this paper is to analyze acoustic data from breaking waves and determine the dominant airborne sound generating mechanisms.
Keywords
breaking waves;acoustics;airborne noise;atmospheric acoustics
Report Number
DRDC-RDDC-2015-N030 — External Literature
Date of publication
08 Jan 2016
Number of Pages
2
DSTKIM No
CA041874
CANDIS No
802990
Format(s):
Electronic Document(PDF)

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