Marine mammal tracks from two-hydrophone acoustic recordings made with a glider

Küsel, Elizabeth T.; Munoz, Tessa; Siderius, Martin; Mellinger, David K.; Heimlich, Sara

doi:10.5194/os-13-273-2017

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Marine mammal tracks from two-hydrophone acoustic recordings made with a glider

2017
By Küsel, Elizabeth T. ; Munoz, Tessa ; Siderius, Martin ; ...
Source: Ocean Science, 13(2), 273-288

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Details:

Journal Title:

Ocean Science
Personal Author:

Küsel, Elizabeth T. ; Munoz, Tessa ; Siderius, Martin ; Mellinger, David K. ; Heimlich, Sara

Küsel, Elizabeth T. ; Munoz, Tessa ; Siderius, Martin ; Mellinger, David K. ; Heimlich, Sara Less -
NOAA Program & Office:

CIMERS (Cooperative Institute for Marine Ecosystem and Resources Studies)
Description:

A multinational oceanographic and acoustic sea experiment was carried out in the summer of 2014 off the western coast of the island of Sardinia, Mediterranean Sea. During this experiment, an underwater glider fitted with two hydrophones was evaluated as a potential tool for marine mammal population density estimation studies. An acoustic recording system was also tested, comprising an inexpensive, off-the-shelf digital recorder installed inside the glider. Detection and classification of sounds produced by whales and dolphins, and sometimes tracking and localization, are inherent components of population density estimation from passive acoustics recordings. In this work we discuss the equipment used as well as analysis of the data obtained, including detection and estimation of bearing angles. A human analyst identified the presence of sperm whale (Physeter macrocephalus) regular clicks as well as dolphin clicks and whistles. Cross-correlating clicks recorded on both data channels allowed for the estimation of the direction (bearing) of clicks, and realization of animal tracks. Insights from this bearing tracking analysis can aid in population density estimation studies by providing further information (bearings), which can improve estimates.
Keywords:

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Acoustics Marine Mammals
Source:

Ocean Science, 13(2), 273-288
DOI:

https://doi.org/10.5194/os-13-273-2017
Document Type:

Journal Article
Place as Subject:

Mediterranean Sea
License:

https://creativecommons.org/licenses/by/3.0/
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CC BY
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Library
Main Document Checksum:

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urn:sha256:ecfe2ace434122c9d15aee4c8c7e3ba4bcf2e481b0b517072818307ebcc45173
Download URL:

https://repository.library.noaa.gov/view/noaa/51575/noaa_51575_DS1.pdf
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