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Passive acoustic observations of tide height in the Iroise Sea using ambient noise.
- Source :
- Journal of the Acoustical Society of America; Sep2015, Vol. 138 Issue 3, pEL299-EL304, 6p
- Publication Year :
- 2015
-
Abstract
- Considering a broadband motionless source in a waveguide with a depth that varies with time, the time-frequency representation of the acoustic intensity shows a striation pattern than can be explained using the depth-frequency waveguide invariant. This phenomenon is used here to describe acoustic data recorded in the Iroise Sea, where intense tides occur. The originality of this study is that the acoustic data consist of only ambient noise. The best hypothesis is that these striations are created by distant marine traffic in the Bay of Brest, and the results suggest that tide height can be monitored using long-term passive acoustics. [ABSTRACT FROM AUTHOR]
- Subjects :
- ACOUSTICS
TIDES
AMBIENT sounds
WAVEGUIDES
TIME-frequency analysis
BAYS
Subjects
Details
- Language :
- English
- ISSN :
- 00014966
- Volume :
- 138
- Issue :
- 3
- Database :
- Complementary Index
- Journal :
- Journal of the Acoustical Society of America
- Publication Type :
- Academic Journal
- Accession number :
- 110104477
- Full Text :
- https://doi.org/10.1121/1.4929740