A simple numerical simulation model is presented which includes the effects of oceanic finestructure together with previously developed theoretical treatments of the effects of internal waves on acoustic transmission. The wave equation solution to particular layer geometries developed by Brekhovskikh [Waves in Layered Media (Academic, New York, 1960)] is combined with the theoretical model of acoustic scattering based on internal waves developed by Desaubies [J. Acoust. Soc. Am. 64, 1460–1469 (1978)]. In this treatment it is assumed that a single finestructure layer is passively advected by internal waves. The layer modulates the effects of internal waves. Experiments carried out at Cobb Seamount over a fixed, horizontal, wholly refracted path indicate that the power spectrum of the phase fluctuations is fit almost exactly by models based on internal waves only, while the power spectrum of the log amplitude fluctuations is not. In the present treatment the predictions of the phase fluctuations remain unaffected by the presence of finestructure, and the predicted power spectrum of the log amplitude is in considerably better agreement with observation.
Skip Nav Destination
Article navigation
February 1980
February 01 1980
A numerical simulation of the effects of oceanic finestructure on acoustic transmission
Terry E. Ewart
Terry E. Ewart
University of Washington, Applied Physics Laboratory, 1013 NE 40th Street, Seattle, Washington 98105
Search for other works by this author on:
J. Acoust. Soc. Am. 67, 496–503 (1980)
Citation
Terry E. Ewart; A numerical simulation of the effects of oceanic finestructure on acoustic transmission. J. Acoust. Soc. Am. 1 February 1980; 67 (2): 496–503. https://doi.org/10.1121/1.383914
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
Citing articles via
Related Content
A numerical simulation of the effects of oceanic finestructure on acoustic transmission
J Acoust Soc Am (August 2005)
Frequency spectra of acoustic fluctuations caused by oceanic internal waves and other finestructure
J Acoust Soc Am (December 1980)
Acoustic variability due to layered finestructure in the Arctic
J Acoust Soc Am (July 1979)
Finestructure in NAPOLI 85, an ocean/acoustic experiment
J Acoust Soc Am (April 1991)
Theoretical approaches to interactions among internal waves, turbulence and finestructure
AIP Conference Proceedings (December 1981)