Acoustic detection and localization of whales in bay of fundy and St. Lawrence estuary critical habitats

Authors

  • Yvan Simard ISMER, Univ. du Quebec a Rimouski, P.O. Box 3300, Rimouski, Que. G5L 3A1, Canada
  • Mohammed Bahoura Dépt. de Mathématiques, Univ. du Quebec a Rimouski, P.O. Box 3300, Rimouski, Que. G5L 3A1, Canada
  • Nathalie Roy Maurice Lamontagne Institute, Fisheries and Oceans Canada, P.O. Box 1000, Mont-Joli, Que. G5H 3Z4, Canada

Keywords:

Acoustic noise, Coastal engineering, Computational methods, Correlation methods, Ecosystems, Hydrophones, Acoustic detection, Critical habitats, Noise spectral suppression, Whales

Abstract

The detection and localization of marine mammals using passive acoustics is explored for two critical habitats in Eastern Canada. Two-dimensional hyperbolic localization is performed on time differences of arrivals of specific calls on grids of coarsely spaced autonomous recorders and on a shore-linked coastal array of closely spaced hydrophones. Delays are computed from cross-correlation and spectrogram cross-coincidence on signals enhanced with high-frequency emphasis and noise spectral suppression techniques. The outcomes and relative performance of the two delay estimation methods are compared. The difficulties encountered under the particular conditions of these two environments are discussed for the point of view of automated localisation for monitoring whales.

Additional Files

Published

2004-06-01

How to Cite

1.
Simard Y, Bahoura M, Roy N. Acoustic detection and localization of whales in bay of fundy and St. Lawrence estuary critical habitats. Canadian Acoustics [Internet]. 2004 Jun. 1 [cited 2024 Sep. 8];32(2):107-16. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/1593

Issue

Vol. 32 No. 2 (2004)

Section

Proceedings of the Acoustics Week in Canada

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