Low-Frequency, Long-Range Sound Propagation through a Fluctuating Ocean: Analysis and Theoretical Interpretation of Existing and Future NPAL Experimental Data
Abstract
Experimental and theoretical studies of low-frequency, long-range sound propagation through a fluctuating ocean are important for many practical problems, e.g. source detection and ranging, communication, and acoustic tomography. The coherence of low-frequency sound waves propagating over megameter distances diminishes noticeably due to sound scattering by internal gravity waves. As a result, the performance of large acoustic arrays degrades. To experimentally study low-frequency, long-range sound propagation in a fluctuating ocean, the North Pacific Acoustic Laboratory (NPAL) carried out two comprehensive experiments. The first experiment was carried out in 1998-1999. A detailed description of the experiment is given in Ref. [1]. The second NPAL experiment was carried out in 2004-2005.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 30, 2005
- Accession Number
- ADA572512
Entities
People
- Alexander G. Voronovich
- Vladimir E. Ostashev
Organizations
- National Oceanic and Atmospheric Administration