Ocean ambient noise is well studied in the North Pacific and North Atlantic but is poorly described for most of the worlds' oceans. Calibrated passive acoustic recordings were collected during 2009–2010 at seven locations in the central and western tropical and subtropical Pacific. Monthly and hourly mean power spectra (15–1000 Hz) were calculated in addition to their skewness, kurtosis, and percentile distributions. Overall, ambient noise at these seven sites was 10–20 dB lower than reported recently for most other locations in the North Pacific. At frequencies <100 Hz, spectrum levels were equivalent to those predicted for remote or light shipping. Noise levels in the 40 Hz band were compared to the presence of nearby and distant ships as reported to the World Meteorological Organization Voluntary Observing Ship Scheme (VOS) project. There was a positive, but nonsignificant correlation between distant shipping and low frequency noise (at 40 Hz). There was a seasonal variation in ambient noise at frequencies >200 Hz with higher levels recorded in the winter than in the summer. Several species of baleen whales, humpback (Megaptera novaeangliae), blue (Balaenoptera musculus), and fin (B. physalus) whales, also contributed seasonally to ambient noise in characteristic frequency bands.
REFERENCES
1.
Andrew
, R. K.
, Howe
, B. M.
, and Mercer
, J. A.
(2011
). “Long-time trends in ship traffic noise for four sites off the North American West Coast
,” J. Acoust. Soc. Am.
129
, 642
–651
.2.
Andrew
, R. K.
, Howe
, B. M.
, Mercer
, J. A.
, and Dzieciuch
, M. A.
(2002
). “Ocean ambient sound: Comparing the 1960s with the 1990s for a receiver off the California coast
,” ARLO
3
, 65
–70
.3.
Au
, W. W. L.
, Mobley
, J.
, Burgess
, W. C.
, Lammers
, M. O.
, and Nachtigall
, P. E.
(2000
). “Seasonal and diurnal trends of chorusing humpback whales wintering in waters off western Maui
,” Marine Mammal Sci.
16
, 530
–544
.4.
Bannister
, R. W.
, Denham
, R. N.
, and Guthrie
, K. M.
(1979
). “Variability of low-frequency ambient sea noise
,” J. Acoust. Soc. Am.
65
, 1156
–1163
.5.
Bassett
, C.
, Polagye
, B.
, Holt
, M.
, and Thomson
, J.
(2012
). “A vessel noise budget for Admiralty Inlet, Puget Sound, Washington (USA)
,” J. Acoust. Soc. Am.
132
, 3706
–3719
.6.
Calambokidis
, J.
, Barlow
, J.
, Ford
, J. K. B.
, Chandler
, T. E.
, and Douglas
, A. B.
(2009
). “Insights into the population structure of blue whales in the Eastern North Pacific from recent sightings and photographic identification
,” Marine Mammal Sci.
25
, 816
–832
.7.
Cato
, D. H.
(1976
). “Ambient sea noise in waters near Australia
,” J. Acoust. Soc. Am.
60
, 320
–328
.8.
Chapman
, N. R.
, and Price
, A.
(2011
). “Low frequency deep ocean ambient noise trend in the Northeast Pacific Ocean
,” J. Acoust. Soc. Am.
129
, E161
–E165
.9.
Duennebier
, F. K.
, Lukas
, R.
, Nosal
, E. M.
, Aucan
, J.
, and Weller
, R. A.
(2012
). “Wind, waves, and acoustic background levels at Station ALOHA
,” J. Geophys. Res. Oceans
117
, C0301721
.10.
Hellerman
, S.
, and Rosenstein
, M.
(1983
). “Normal monthly wind stress over the world ocean with error-estimates
,” J. Phys. Oceanogr.
13
, 1093
–1104
.11.
Hildebrand
, J. A.
(2009
). “Anthropogenic and natural sources of ambient noise in the ocean
,” Mar. Ecol. Prog. Ser.
395
, 5
–20
.12.
Hodges
, R. P.
(2010
). Underwater Acoustics: Analysis, Design and Performance of Sonar
(Wiley
, Chichester, UK
), p. 366
.13.
Johnson
, M. W.
, and Johnston
, T. F.
(1944
). “Ambient water noise in the central and southwest Pacific
,” Report No. M284 (University of California Division of War Research
), p. 60
.14.
Knudsen
, V. O.
, Alford
, R. S.
, and Emling
, J. W.
(1948
). “Underwater ambient noise
,” J. Mar. Res.
7
, 410
–429
.15.
Lomask
, M.
, and Frassetto
, R.
(1960
). “Acoustic measurements in deep water using the bathyscaph
,” J. Acoust. Soc. Am.
32
, 1028
–1033
.16.
Mate
, B. R.
, Lagerquist
, B. A.
, and Calambokidis
, J.
(1999
). “Movements of North Pacific blue whales during the feeding season off Southern California and their southern fall migration
,” Marine Mammal Sci.
15
, 1246
–1257
.17.
McDonald
, M. A.
, Hildebrand
, J. A.
, and Wiggins
, S. M.
(2006a
). “Increases in deep ocean ambient noise in the Northeast Pacific west of San Nicholas Island, California
,” J. Acoust. Soc. Am.
120
, 711
–718
.18.
McDonald
, M. A.
, Hildebrand
, J. A.
, Wiggins
, S. M.
, and Ross
, D.
(2008
). “A 50 Year comparison of ambient ocean noise near San Clemente Island: A bathymetrically complex coastal region off Southern California
,” J. Acoust. Soc. Am.
124
, 1985
–1992
.19.
McDonald
, M. A.
, Mesnick
, S. L.
, and Hildebrand
, J. A.
(2006b
). “Biogeographic characterisation of blue whale song worldwide: Using song to identify populations
,” J. Cetacean Res. Manage.
8
, 55
–65
.20.
McKenna
, M. F.
(2011
). “Blue whale response to underwater noise from commercial ships
,” Ph.D. dissertation, University of California San Diego, San Diego, CA
.21.
McKenna
, M. F.
, Katz
, S. L.
, Wiggins
, S. M.
, Ross
, D.
, and Hildebrand
, J. A.
(2012a
). “A quieting ocean: Unintended consequence of a fluctuating economy
,” J. Acoust. Soc. Am.
132
, EL169
–EL175
.22.
McKenna
, M. F.
, Ross
, D.
, Wiggins
, S. M.
, and Hildebrand
, J. A.
(2012b
). “Underwater radiated noise from modern commercial ships
,” J. Acoust. Soc. Am.
131
, 92
–103
.23.
Mobley
, J. R.
, Jr., Bauer
, G. B.
, and Herman
, L. M.
(1999
). “Changes over a ten-year interval in the distribution and relative abundance of humpback whales (Megaptera novaeangliae) wintering in Hawaiian waters
,” Aquat. Mamm.
25
, 63
–72
.24.
Moore
, S. E.
, Stafford
, K. M.
, Melling
, H.
, Berchok
, C.
, Wiig
, O.
, Kovacs
, K. M.
, Lydersen
, C.
, and Richter-Menge
, J.
(2012
). “Comparing marine mammal acoustic habitats in Atlantic and Pacific sectors of the High Arctic: Year-long records from Fram Strait and the Chukchi Plateau
,” Polar Biol.
35
, 475
–480
.25.
Oleson
, E. M.
, Wiggins
, S.
, and Hildebrand
, J. A.
(2007
). “Temporal separation of blue whale call types on a southern California feeding ground
,” Anim. Behav.
74
, 881
–894
.26.
27.
28.
Ross
, D.
(2005
). “Ship sources of ambient noise
,” IEEE J. Ocean. Eng.
30
, 257
–261
.29.
Širović
, A.
, Cutter
, G. R.
, Butler
, J. L.
, and Demer
, D. A.
(2009
). “Rockfish sounds and their potential use for population monitoring in the Southern California Bight
,” ICES J. Mar. Sci.
66
, 981
–990
.30.
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
, I
–521
.31.
Stafford
, K. M.
, Nieukirk
, S. L.
, and Fox
, C. G.
(1999
). “Low-frequency whale sounds recorded on hydrophones moored in the eastern tropical Pacific
,” J. Acoust. Soc. Am.
106
, 3687
–3698
.32.
Urick
, R. J.
(1983
). Principles of Underwater Sound
(Peninsula
, Los Altos, CA
), p. 423
.33.
Wenz
, G. M.
(1961
). “Some periodic variations in low-frequency acoustic ambient noise levels in the ocean
,” J. Acoust. Soc. Am.
33
, 64
–74
.34.
Wenz
, G. M.
(1962
). “Acoustic ambient noise in the ocean: Spectra and sources
,” J. Acoust. Soc. Am.
34
, 1936
–1956
.35.
Wiggins
, S. M.
, and Hildebrand
, J. A.
(2007
). “High-Frequency Acoustic Recording Package (HARP) for broad-band, long-term marine mammal monitoring
,” in International Symposium on Underwater Technology 2007 and International Workshop on Scientific Use of Submarine Cables and Related Technologies
, IEEE
, Tokyo, Japan
, pp. 551
–557
.© 2013 Acoustical Society of America.
2013
Acoustical Society of America
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