Accession Number:

ADA064103

Title:

Acoustically Relevant Eddy Effects and Ocean Surface Height.

Descriptive Note:

Technical rept.,

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY N Y DEPT OF MATHEMATICAL SCIENCES

Personal Author(s):

• Jacobson,M. J.
• Siegmann,W. L.
• Itzikowitz,S.
• Henrick,R. F.

Report Date:

1979-01-01

Pagination or Media Count:

23.0

Abstract:

Underwater sound transmissions are significantly affected by the presence of mesoscale eddies, because large sound-speed variations and rotational currents are associated with these phenomena. Using an earlier axisymmetric eddy model, equations and graphs of the ocean surface are found above an eddy. The surface is elevated above an anticyclonic eddy and depressed in the cyclonic case northern hemisphere. This behavior may be used to detect and partially classify an ocean eddy. With an appropriate eddy model, satellite altimeter data may be used to approximate acoustically-relevant effects. Author

Descriptors:

• *UNDERWATER ACOUSTICS
• *EDDY CURRENTS
• OCEAN SURFACE
• OCEANOGRAPHIC DATA
• MATHEMATICAL ANALYSIS
• SOUND TRANSMISSION
• ALTIMETERS
• OCEAN MODELS
• UNDERWATER SOUND
• OCEAN SURVEILLANCE

Subject Categories:

• Physical and Dynamic Oceanography
• Acoustics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE