Underwater Acoustic Propagation in the Korea Strait.
Abstract
On 17 September 1983, a transmission loss (TL) experiment was conducted in the Korea Strait as a joint project between the Naval Air Development Center, U.S., and Agency for Defense Development, Korea. Two propagation paths were measured; the first parallel to the Korea Trench and the second across the trench. The TL, calculated by NADC is greater across the trench than parallel to the trench. A representative Sound Velocity Profile (SVP) was selected after examination of twelve locations close to the experimental track. This SVP, bottom type, and bathymetry were used in three computer models and the predictions of TL compared to experimental results. A split-step FFT parabolic equation model and a ray mode model shows little difference in the two directions. An implicit finite difference parabolic equation model showed a significant difference. Agreement along the path parallel to the trench was excellent when 30 dB were added to the experimental results. Agreement across the trench was less satisfactory.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1983
- Accession Number
- ADA140213
Entities
People
- S. H. Park
Organizations
- Naval Postgraduate School