Safety criteria for underwater low-frequency active sonar sounds produced during naval exercises are needed to protect harbor porpoise hearing. As a first step toward defining criteria, a porpoise was exposed to sequences consisting of series of 1-s, 1–2 kHz sonar down-sweeps without harmonics (as fatiguing noise) at various combinations of average received sound pressure levels (SPLs; 144–179 dB re 1 μPa), exposure durations (1.9–240 min), and duty cycles (5%–100%). Hearing thresholds were determined for a narrow-band frequency-swept sine wave centered at 1.5 kHz before exposure to the fatiguing noise, and at 1–4, 4–8, 8–12, 48, 96, 144, and 1400 min after exposure, to quantify temporary threshold shifts (TTSs) and recovery of hearing. Results show that the inter-pulse interval of the fatiguing noise is an important parameter in determining the magnitude of noise-induced TTS. For the reported range of exposure combinations (duration and SPL), the energy of the exposure (i.e., cumulative sound exposure level; SELcum) can be used to predict the induced TTS, if the inter-pulse interval is known. Exposures with equal SELcum but with different inter-pulse intervals do not result in the same induced TTS.
REFERENCES
1.
Ainslie
, M. A.
(2010
). Principles of Sonar Performance
(Springer-Praxis
, Chinchester, UK
), 283
pp.2.
ANSI
(1994
). S1.1 1994, American National Standard Acoustical Terminology
(Acoustical Society of America
, New York)
, No. R2004, 58
pp.3.
Bjorge
, A.
, and Tolley
, K. A.
(2008
). “Harbor porpoise Phocoena phocoena
,” in Encyclopedia of Marine Mammals
, edited by W. F.
Perrin
, B.
Wursig
, and J. G. M.
Thewissen
(Academic
, New York
), pp. 530
–532
.4.
Carder
, H. M.
, and Miller
, J. D.
(1972
). “Temporary threshold shifts from prolonged exposure to noise
,” J. Speech Hear. Res.
15
, 603
–623
.5.
Cornsweet
, T. N.
(1962
). “The staircase method in psychophysics
,” J. Acoust. Soc. Am.
75
, 485
–491
.6.
Finneran
, J. J.
, Carder
, D. A.
, Schlundt
, C. E.
, and Dear
, R. L.
(2010
). “Temporary threshold shift in a bottlenose dolphin (Tursiops truncatus) exposed to intermitted tones
,” J. Acoust. Soc. Am.
127
, 3267
–3272
.7.
Finneran
, J. J.
, Carder
, D. A.
, Schlundt
, C. E.
, and Ridgway
, S. H.
(2005
). “Temporary threshold shift in bottlenose dolphins (Tursiops truncatus) exposed to mid-frequency tones
.” J. Acoust. Soc. Am.
118
, 2696
–2705
.8.
Finneran
, J. J.
, and Schlundt
, C. E.
(2010
). “Frequency-dependent and longitudinal changes in noise-induced hearing loss in a bottlenose dolphin (Tursiops truncatus)
,” J. Acoust. Soc. Am.
128
, 567
–570
.9.
Finnenran
, J. J.
, and Schlundt
, C. E.
(2013
). “Effects of fatiguing tone frequency on temporary threshold shift in bottlenose dolphins (Tursiops truncatus)
,” J. Acoust. Soc. Am.
133
, 1819
–1826
.10.
Finneran
, J. J.
, Schlundt
, C. E.
, Branstetter
, B.
, and Dear
, R. L.
(2007
). “Assessing temporary threshold shift in a bottlenose dolphin (Tursiops truncatus) using multiple simultaneous auditory evoked potentials
,” J. Acoust. Soc. Am.
122
, 1249
–1264
.11.
Finneran
, J. J.
, Schlundt
, C. E.
, Carder
, D. A.
, Clark
, J. A.
, Young
, J. A.
, Gaspin
, J. B.
, and Ridgway
, S. H.
(2000
). “Auditory and behavioral responses of bottlenose dolphins (Tursiops truncatus) and a beluga (Delphinapterus leucas) to impulsive sounds resembling distant signatures of underwater explosions
,” J. Acoust. Soc. Am.
108
, 417
–431
.12.
Finneran
, J. J.
, Schlundt
, C. E.
, Dear
, R.
, Carder
, D. A.
, and Ridgway
, S. H.
(2002
). “Temporary shift in masked hearing thresholds in odontocetes after exposure to single under-water impulses from a seismic watergun
,” J. Acoust. Soc. Am.
111
, 2929
–2940
.13.
Henserson
, D.
, Subramaniam
, M.
, Graton
, M. A.
, and Saunders
, S. S.
(1991
). “Impact of noise: The importance of level, duration, and repetition rate
,” J. Acoust. Soc. Am.
89
, 1350
–1357
.14.
Kastelein
, R. A.
, Bunskoek
, P.
, Hagedoorn
, M.
, Au
, W. W. L.
, and de Haan
, D.
(2002
). “Audiogram of a harbor porpoise (Phocoena phocoena) measured with narrow-band frequency-modulated signals
,” J. Acoust. Soc. Am.
112
, 334
–344
.15.
Kastelein
, R. A.
, Gransier
, R.
, and Hoek
, L.
(2013a
). “Comparative temporary threshold shifts in a harbor porpoise and harbor seal, and severe shift in a seal
,” J. Acoust. Soc. Am.
134
, 13
–16
.16.
Kastelein
, R. A.
, Gransier
, R.
Hoek
, L.
, Macleod
, A.
, and Terhune
, J. M.
(2012a
). “Hearing threshold shifts and recovery in harbor seals (Phoca vitulina) after octave-band noise exposure at 4 kHz
,” J. Acoust. Soc. Am.
132
, 2745
–2761
.17.
Kastelein
, R. A.
, Gransier
, R.
, Hoek
, L.
, and Olthuis
, J.
(2012b
). “Temporary threshold shifts and recovery in a harbor porpoise (Phocoena phocoena) after octave-band noise at 4 kHz
,” J. Acoust. Soc. Am.
132
, 3525
–3537
.18.
Kastelein
, R. A.
, Gransier
, R.
, Hoek
, L.
, and Rambags
, M.
(2013b
). “Hearing frequency thresholds of a harbor porpoise (Phocoena phocoena) temporarily affected by a continuous 1.5 kHz tone
,” J. Acoust. Soc. Am.
134
, 2286
–2292
.19.
Kastelein
, R. A.
, Hoek
, L.
, and de Jong
, C. A. F.
(2011
). “Hearing thresholds of a harbor porpoise (Phocoena phocoena) for sweeps (1–2 kHz and 6–7 kHz bands) mimicking naval sonar signals
,” J. Acoust. Soc. Am.
129
, 1
–8
.21.
Kastelein
, R. A.
, Hoek
, L.
, de Jong
, C. A. F.
, and Wensveen
, P. J.
(2010
). “The effect of signal duration on the underwater detection thresholds of a harbor porpoise (Phocoena phocoena) for single frequency-modulated tonal signals between 0.25 and 160 kHz
,” J. Acoust. Soc. Am.
128
, 3211
–3222
.22.
Kastelein
, R. A.
, Steen
, N.
, Gransier
, R.
, Wensveen
, P. J.
, and de Jong
, C. A. F.
(2012c
). “Threshold received sound pressure levels of single 1–2 kHz and 6–7 kHz up-sweeps and down-sweeps causing startle responses in a harbor porpoise (Phocoena phocoena)
,” J. Acoust. Soc. Am.
131
, 2325
–2333
.25.
Lucke
, K.
, Siebert
, U.
, Lepper
, P. A.
, and Blanchet
, M.
(2009
). “Temporary shift in masked hearing thresholds in a harbor porpoise (Phocoena phocoena) after exposure to seismic airgun stimuli
,” J. Acoust Soc. Am.
125
, 4060
–4070
.26.
Luts
, H.
, van Dun
, B.
, Alaerts
, J.
, and Wouters
, J.
(2008
). “The influence of the detection paradigm in recording auditory steady-state responses
,” Ear Hear.
29
, 638
–650
.27.
Madsen
, P. T.
(2005
). “Marine mammals and noise: Problems with root mean square sound pressure levels for transients
,” J. Acoust. Soc. Am.
117
, 3952
–3957
.28.
Melnick
, W.
(1991
). “Human temporary threshold shifts (TTS) and damage risk
,” J. Acoust. Soc. Am.
90
, 147
–154
.29.
Mills
, J. H.
, Gilbert
, R. M.
, and Adkins
, W. Y.
(1979
). “Temporary threshold shift in humans exposed to octave bands of noise for 16 to 24 hours
,” J. Acoust. Soc. Am.
65
, 1238
–1248
.30.
Mooney
, T. A.
, Nachtigall
, P. E.
, Breese
, M.
, Vlachos
, M.
, and Au
, W. W. L.
(2009a
). “Predicting temporary threshold shift in a bottlenose dolphin (Tursiops truncatus): The effects of noise level and duration
,” J. Acoust. Soc. Am.
125
, 1816
–1826
.31.
Mooney
, T. A.
, Nachtigall
, P. E.
, and Vlachos
, S.
(2009b
). “Sonar-induced temporary hearing loss in dolphins
,” Biol. Lett.
5
, 565
–567
.32.
Nachtigall
, P. E.
, Pawloski
, J. L.
, and Au
, W. W. L.
(2003
). “Temporary threshold shifts and recovery following noise exposure in the Atlantic bottlenosed dolphin (Tursiops truncatus)
,” J. Acoust. Soc. Am.
113
, 3425
–3429
.33.
Nachtigall
, P. E.
, Supin
, A. Ya.
, Pawloski
, J.
, and Au
, W. W. L.
(2004
). “Temporary threshold shifts after noise exposure in the bottlenose dolphin (Tursiops truncatus) measured using evoked auditory potentials
,” Mar. Mamm. Sci.
20
, 673
–687
.34.
Popov
, V. V.
, Supin
, A. Ya.
, Rozhnov
, V. V.
Nechaev
, D. I.
, Sysuyeva
, E. V.
, Klishin
, V. O.
, Pletenko
, M. G.
, and Tarakanov
, M. B.
(2013
). “Hearing threshold shifts and recovery after noise exposure in beluga whales, Delphinapterus leucas
,” J. Exp. Biol.
216
, 1587
–1596
.35.
Popov
, V. V.
, Supin
, A. Ya.
, Wang
, D.
, Wang
, K.
, Dong
, L.
, and Wang
, S.
(2011
). “Noise-induced temporary threshold shift and recovery in Yangtze finless porpoise Neophocaena phocaenoides asiaeorientalis
,” J. Acoust. Soc. Am.
130
, 574
–584
.36.
Price
, G. R.
(1980
). “Implications of a critical level in the ear for assessment of noise hazard at high intensities
,” J. Acoust. Soc. Am.
69
, 171
–177
.38.
Schlundt
, C. E.
, Finneran
, J. J.
, Carder
, D. A.
, and Ridgway
, S. H.
(2000
). “Temporary shift in masked hearing thresholds of bottlenose dolphins, Tursiops truncatus, and white whales, Delphinapterus leucas, after exposure to intense tones
,” J. Acoust. Soc. Am.
107
, 3496
–3508
.39.
Southall
, B. L.
, Bowles
, A. E.
, Ellison
, W. T.
, Finneran
, J. J.
, Gentry
, R. L.
, Greene
, C. R.
, Jr., Kastak
, D.
, Ketten
, D. R.
, Miller
, J. H.
, Nachtigall
, P. E.
, Richardson
, W. J.
, Thomas
, J. A.
, and Tyack
, P. L.
(2007
). “Marine mammal noise exposure criteria: Initial scientific recommendations
,” Aquat. Mamm.
33
, 411
–521
.40.
Syka
, J.
, and Popelár
, J.
(1980
). “Hearing threshold shifts from prolonged exposure to noise in guinea pigs
,” Hear. Res.
3
, 205
–213
.41.
Yost
, W. A.
(2007
). Fundamentals of Hearing: An Introduction
(Academic
, New York)
, 326
pp.42.
Zar
, J. H.
(1999
). Biostatistical Analysis
(Prentice-Hall
, Upper Saddle River, NJ)
, 718
pp.© 2014 Acoustical Society of America.
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Acoustical Society of America
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