Contributions en méthodes pour le suivi de mysticètes par acoustique passive

Julie Patris 1
1 DYNI - DYNamiques de l’Information
LIS - Laboratoire d'Informatique et Systèmes
Abstract : Passive acoustic monitoring has a growing importance in studies of marine mammals. This work is concerned with the largest of marine mammals, the blue whale (Balaenoptera musculus). We obtained a new corpus of acoustic data in the northern part of Chile, from the Humboldt archipelago. We show the presence of a song characteristic of the 'Chilean' blue whale, formerly described in southern Chile and Galapagos islands. Based on this song type, we propose new methods of analysing and classifying pulsed sounds. Using the fundamental frequency thus obtained, we analyse the blue whale's song, showing a general evolution of the frequency on a decadal scale. We also construct a method of mono-hydrophone source localisation based on high performance simulation of the acoustic wave field, by spectral element methods. To conclude, we emphasize the importance of bioacoustics for monitoring the marine world.
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Julie Patris. Contributions en méthodes pour le suivi de mysticètes par acoustique passive. Informatique [cs]. Université de Toulon, 2019. Français. ⟨tel-02470838⟩

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