Title :
Attenuation of low frequency sound in ocean surface ducts: implications for surface loss values
Author :
Browning, David G. ; Scheifele, Peter M. ; Mellen, Robert H.
Author_Institution :
US Naval Underwater Syst. Center, New London, CT, USA
fDate :
31 Oct-2 Nov 1988
Abstract :
The attenuation of low-frequency sound in the sea increases with pH. In most ocean areas, the value of pH changes significantly with depth, and must be included in an accurate attenuation computation. Previous determinations of other parameters, such as surface loss, which were based on older attenuation formulas, are therefore inaccurate. An analysis of a previously reported surface loss formula indicates that the predicted values are too high
Keywords :
acoustic wave absorption; acoustic waveguides; losses; pH; seawater; underwater sound; attenuation computation; attenuation of low-frequency sound; ocean surface ducts; pH; surface loss; Acoustic propagation; Attenuation; Convergence; Ducts; Frequency; Laboratories; Magnesium compounds; Oceans; Propagation losses; Sea surface;
Conference_Titel :
OCEANS '88. A Partnership of Marine Interests. Proceedings
Conference_Location :
Baltimore, MD
DOI :
10.1109/OCEANS.1988.23520
