PAM of Large Whales in SOCAL Using AUVs

Authors: Fregosi et al Year published: 2021 File size: 10,695.91 KB

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A passive acoustic monitoring survey using mobile underwater gliders was conducted from 7 February to 31 March 2020 in the Southern California Bight, with the goal of characterizing the temporal and spatial distribution of odontocetes and mysticetes in the region. Initially, the focus of this Project was on beaked whales. However, upon recovery of the gliders post-deployment, it was discovered that neither glider recorded any useable data above 2.5 kilohertz, well below the frequency of beaked whale vocalizations. It was then decided to analyze the available data for baleen whale and sperm whale (Physeter macrocephalus) vocalizations, which was originally a focus of secondary importance for the Project.

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