Influence on Sound Wave Propagation of the Relation Between Internal Wave Position and Turning Ray
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- TSURUGAYA Yoshiaki
- NEC, Radio Application Division, Univercity of Tsukuba
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- MIZUTANI Koichi
- Unversity of Tsukuba, Systems and Information Engineering
Bibliographic Information
- Other Title
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- 内部波と転回音線の位置の関係が音波伝搬に与える影響
- ナイブハ ト テンカイオンセン ノ イチ ノ カンケイ ガ オンパ デンパン ニ アタエル エイキョウ
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Abstract
In the sound propagation in shallow water, the influence of an internal wave is worthy of attention. We investigated the influence of the shallow water internal wave on the sound propagation on the continental shelf. The internal wave was assumed to be 100 m wide, with an amplitude of 22.5 m. The relation between the position of the internal wave and the turning ray was examined at 50 m in sound source depth in the thermocline. Because the turning position and the internal wave overlap, a strong scattering is caused at the rear and underside of the internal wave. Moreover, the width of the influence to the turning position is ±400 m regardless of the position of the internal wave. We also determined that the influence increases according to the extent of the internal wave width.
Journal
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- The Journal of the Marine Acoustics Society of Japan
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The Journal of the Marine Acoustics Society of Japan 37 (1), 25-33, 2010
The Marine Acoustics Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204366939008
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- NII Article ID
- 130004840217
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- NII Book ID
- AN10299394
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- ISSN
- 18816819
- 09165835
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- NDL BIB ID
- 10547196
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed