Passive acoustic tracking of marine mammals and anthropogenic sound sources with autonomous three-dimensional small-aperture arrays

2011 ◽  
Vol 130 (4) ◽  
pp. 2378-2378
Author(s):  
Martin Gassmann ◽  
Sean M. Wiggins ◽  
John A. Hildebrand
Keyword(s):  
Marine Mammals ◽  
Three Dimensional ◽  
Acoustic Tracking ◽  
Sound Sources ◽  
Small Aperture ◽  
Passive Acoustic ◽  
Aperture Arrays

scholarly journals Passive acoustic methods for tracking the 3D movements of small cetaceans around marine structures

2020 ◽  
Author(s):  
Douglas Gillespie ◽  
Laura Palmer ◽  
Jamie Macaulay ◽  
Carol Sparling ◽  
Gordon Hastie
Keyword(s):  
Marine Mammals ◽  
New Technologies ◽  
Three Dimensional ◽  
Tidal Energy ◽  
Time Of Arrival ◽  
Marine Animals ◽  
Tidal Turbines ◽  
Wide Range ◽  
Tidal Turbine ◽  
Passive Acoustic

AbstractA wide range of anthropogenic structures exist in the marine environment with the extent of these set to increase as the global offshore renewable energy industry grows. Many of these pose acute risks to marine wildlife; for example, tidal energy generators have the potential to injure or kill seals and small cetaceans through collisions with moving turbine parts. Information on fine scale behaviour of animals close to operational turbines is required to understand the likely impact of these new technologies. There are inherent challenges associated with measuring the underwater movements of marine animals which have, so far, limited data collection. Here, we describe the development and application of a system for monitoring the three-dimensional movements of cetaceans in the immediate vicinity of a subsea structure. The system comprises twelve hydrophones and software for the detection and localisation of vocal marine mammals. We present data demonstrating the systems practical performance during a deployment on an operational tidal turbine between October 2017 and October 2019. Three-dimensional locations of cetaceans were derived from the passive acoustic data using time of arrival differences on each hydrophone. Localisation accuracy was assessed with an artificial sound source at known locations and a refined method of error estimation is presented. Calibration trials show that the system can accurately localise sounds to 2m accuracy within 20m of the turbine but that localisations become highly inaccurate at distances greater than 35m. The system is currently being used to provide data on rates of encounters between cetaceans and the turbine and to provide high resolution tracking data for animals close to the turbine. These data can be used to inform stakeholders and regulators on the likely impact of tidal turbines on cetaceans.

Three‐dimensional passive acoustic tracking of sperm whale behavior with widely separated vertical arrays in the Gulf of Alaska

2006 ◽  
Vol 120 (5) ◽  
pp. 3014-3014
Author(s):  
Christopher O. Tiemann ◽  
Aaron M. Thode ◽  
Jan Straley ◽  
Kendall Folkert ◽  
Victoria O’Connell
Keyword(s):  
Three Dimensional ◽  
Sperm Whale ◽  
Gulf Of Alaska ◽  
Acoustic Tracking ◽  
Vertical Arrays ◽  
Passive Acoustic

Three‐dimensional Bayesian passive acoustic tracking of walruses in the Chukchi Sea.

2010 ◽  
Vol 128 (4) ◽  
pp. 2483-2483
Author(s):  
Brendan P. Rideout ◽  
Stan E. Dosso ◽  
David E. Hannay
Keyword(s):  
Chukchi Sea ◽  
Three Dimensional ◽  
Acoustic Tracking ◽  
Passive Acoustic
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