In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 104, No. 3_Supplement ( 1998-09-01), p. 1838-1838
Abstract:
The results of underwater acoustic noise measurements at different sites in the Persian Gulf, Karadj Dam lake and at a small lake west of Tehran are investigated on the basis of time series and relative power spectra. Several possible sources such as shipping, wind, surf, industrial activities on shore, thermal agitation etc. are distinguished to determine the most probable origins of the observed noise. The ambient noise of the Persian Gulf is found to be a composite of at least three overlapping components: turbulent-pressure fluctuations, noise due to shipping with a maximum relative power around 50–60 Hz, and that due to wind with a maximum around 800 Hz. Spectrum characteristics of each component and of the composite are shown. The radiated noise of some different classes of ships and boats measured in the Persian Gulf and Karadj Dam lake are also discussed. Additional sources, including those of intermittent and local effects, such as bubbles, rain, snow, flying aircraft, etc., are also investigated in the small lake. Finally the Gaussianity and stationarity of the recorded data are studied through appropriate tests.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
1998
detail.hit.zdb_id:
1461063-2
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