Predicting acoustic dose associated with marine mammal behavioural responses to sound as detected with fixed acoustic recorders and satellite tags

Author
von Benda-Beckmann, Alexander M.
Wensveen, Paul Jacobus
Prior, Mark
Ainslie, Michael
Hansen, Rune Roland
Isojunno, Saana
Lam, Frans-Peter Alexander
Kvadsheim, Petter Helgevold
Miller, Patrick James O'Malley
Date Issued
2019-03-08
Keywords
Akustikk
Hvaler
Akustisk deteksjon
Permalink
http://hdl.handle.net/20.500.12242/2681
DOI
10.1121/1.5093543
Collection
Articles
Description
von Benda-Beckmann, Alexander M.; Wensveen, Paul Jacobus; Prior, Mark; Ainslie, Michael; Hansen, Rune Roland; Isojunno, Saana; Lam, Frans-Peter Alexander; Kvadsheim, Petter Helgevold; Miller, Patrick James O'Malley. Predicting acoustic dose associated with marine mammal behavioural responses to sound as detected with fixed acoustic recorders and satellite tags. Journal of the Acoustical Society of America 2019 ;Volum 145.(3) s. 1401-1416
1703327.pdf
Size: 7M
Abstract
To understand the consequences of underwater noise exposure for cetaceans, there is a need for assessments of behavioural responses over increased spatial and temporal scales. Bottom-moored acoustic recorders and satellite tags provide such long-term and large spatial coverage of behaviour compared to short-duration acoustic-recording tags. However, these tools result in a decreased resolution of data from which an animal response can be inferred, and no direct recording of the sound received at the animal. This study discusses the consequence of the decreased resolution of data from satellite tags and fixed acoustic recorders on the acoustic dose estimated by propagation modelling and presents a method for estimating the range of sound levels that animals observed with these methods have received. This problem is illustrated using experimental results obtained during controlled exposures of northern bottlenose whales (Hyperoodon ampullatus) exposed to naval sonar, carried out near Jan Mayen, Norway. It is shown that variability and uncertainties in the sound field, resulting from limited sampling of the acoustic environment, as well as decreased resolution in animal locations, can lead to quantifiable uncertainties in the estimated acoustic dose associated with the behavioural response (in this case avoidance and cessation of foraging).
View Meta Data