It's a small world: underwater sound transmission from the southern Indian Ocean to the western North Atlantic

Auteurs-es

  • I.A. Fraser Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
  • P.D. Morash Defence Res. Establ. Atlantic, Dartmouth, NS, Canada

Mots-clés :

acoustic wave propagation, acoustic wave transmission, oceanographic regions, underwater sound, underwater sound transmission, western North Atlantic, acoustic signals, Heard Island, southern Indian Ocean, North America, 17000 km

Résumé

Sounds transmitted through the air are rarely detectable more than a few kilometers from their source. Beneath the sea, however, acoustic signals at frequencies less than a few hundred Hertz can often be detected at ranges of several thousand kilometers. The authors show that low-frequency acoustic signals entering the ocean near Heard Island in the southern Indian Ocean can be detected off the east coast of North America and that relatively crude modelling is sufficient to reproduce the signal levels observed, despite the long path length of approximately 17000 km (17 Mm)

Fichiers supplémentaires

Publié-e

1992-09-01

Comment citer

1.
Fraser I, Morash P. It’s a small world: underwater sound transmission from the southern Indian Ocean to the western North Atlantic. Canadian Acoustics [Internet]. 1 sept. 1992 [cité 14 mai 2026];20(3):67-8. Disponible à: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/739

Numéro

Vol. 20 No. 3 (1992)

Rubrique

Actes du congrès de la Semaine canadienne d'acoustique

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