Estimating propagation and audibility of industrial noise in subnivean polar bear dens

Polar bear (Ursus maritimus) maternal dens are ephemeral and difficult to monitor, so predictive models of noise penetration into dens are needed. Noise propagation into artificial snow dens was monitored from 9 sources typical of industrial activities (2 aircraft, 2 over-tundra tracked vehicles, 4...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2019-10, Vol.146 (4), p.2823-2823
Main Authors: Owen, Megan A., Pagano, Anthony M., Sheyna, Wisdom, Bowles, Ann
Format: Article
Language:English
Online Access:Get full text
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Summary:Polar bear (Ursus maritimus) maternal dens are ephemeral and difficult to monitor, so predictive models of noise penetration into dens are needed. Noise propagation into artificial snow dens was monitored from 9 sources typical of industrial activities (2 aircraft, 2 over-tundra tracked vehicles, 4 wheeled on-road vehicles, and humans walking) near Milne Point, Alaska. Dens were built in 4 configurations, 2 depths (100 cm, 70 cm) and 2 closure conditions (closed, open) to model variability in den roof thickness and breeding stage (before, after emergence). An existing polar bear audiogram was used to predict detection probabilities. Levels
ISSN:0001-4966
1520-8524
DOI:10.1121/1.5136780