Accession Number:

AD0767812

Title:

Attenuation in Randomly Inhomogeneous Sound Channels.

Descriptive Note:

Memo.,

Corporate Author:

SACLANT ASW RESEARCH CENTRE LA SPEZIA (ITALY)

Personal Author(s):

• Mellen,Robert H.

Report Date:

1973-08-15

Pagination or Media Count:

13.0

Abstract:

Estimates of the absorption of sound in sea water, based on sound channel experiments, can be seriously affected by scattering from random inhomogeneities in sound speed. Ray diffusion theory leads to an additional component of attenuation independent of frequency. Order of magnitude estimates of diffusion loss, calculated from perturbations in the sound speed profiles, are in reasonable agreement for a broad range of experimental data. Author

Descriptors:

• (*UNDERWATER SOUND
• ATTENUATION)
• SEA WATER
• SOUND TRANSMISSION
• SCATTERING
• ABSORPTION
• ITALY

Subject Categories:

• Physical and Dynamic Oceanography
• Acoustic Detection and Detectors
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE