Modeling deep ocean shipping noise in varying acidity conditions
Citable URI
https://hdl.handle.net/1912/3853As published
https://doi.org/10.1121/1.3402284DOI
10.1121/1.3402284Keyword
Acoustic noise; Acoustic wave absorption; Ocean chemistry; pH; Seawater; Ships; Underwater soundAbstract
Possible future changes of ambient shipping noise at 0.1–1 kHz in the North Pacific caused by changing seawater chemistry conditions are analyzed with a simplified propagation model. Probable decreases of pH would cause meaningful reduction of the sound absorption coefficient in near-surface ocean water for these frequencies. The results show that a few decibels of increase may occur in 100 years in some very quiet areas very far from noise sources, with small effects closer to noise sources. The use of ray physics allows sound energy attenuated via volume absorption and by the seafloor to be compared.
Description
Author Posting. © Acoustical Society of America, 2010. This article is posted here by permission of Acoustical Society of America for personal use, not for redistribution. The definitive version was published in Journal of the Acoustical Society of America 128 (2010): EL130–EL136, doi:10.1121/1.3402284.
Suggested Citation
Article: Udovydchenkov, Ilya A., Duda, Timothy F., Doney, Scott C., Lima, Ivan D., "Modeling deep ocean shipping noise in varying acidity conditions", Journal of the Acoustical Society of America 128 (2010): EL130–EL136, DOI:10.1121/1.3402284, https://hdl.handle.net/1912/3853Related items
Showing items related by title, author, creator and subject.
-
Deep seafloor arrivals in long range ocean acoustic propagation
(Acoustical Society of America, 2013-10)Ocean bottom seismometer observations at 5000 m depth during the long-range ocean acoustic propagation experiment in the North Pacific in 2004 show robust, coherent, late arrivals that are not readily explained by ocean ... -
Observationally constrained modeling of sound in curved ocean internal waves: Examination of deep ducting and surface ducting at short range
(Acoustical Society of America, 2011-09)A study of 400 Hz sound focusing and ducting effects in a packet of curved nonlinear internal waves in shallow water is presented. Sound propagation roughly along the crests of the waves is simulated with a three-dimensional ... -
Low-frequency broadband sound source localization using an adaptive normal mode back-propagation approach in a shallow-water ocean
(Acoustical Society of America, 2012-02)A variety of localization methods with normal mode theory have been established for localizing low frequency (below a few hundred Hz), broadband signals in a shallow water environment. Gauss-Markov inverse theory is employed ...
