停泊中の船舶から海中へ放射される雑音の干渉効果
書誌事項
- タイトル別名
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- Interference of Underwater Noise Emitted by Drifting Vessel.
- テイハクチュウ ノ センパク カラ カイチュウ エ ホウシャサレル ザツオン
- 公開日
- 1997
- 資源種別
- journal article
- DOI
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- 10.2331/suisan.63.213
- 公開者
- 公益社団法人 日本水産学会
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説明
Transmission ray of underwater noise emitted by drifting vessel have two direction i.e. direct and reflected rays. Interference occurs to receive the mixed sound wave from both rays at a hydrophone. The present research compares a theoretical interference with the basis of actual measurements of interference.<br>We observed vertically underwater noise emitted by drifting vessel with intervals one meter on 26m depth and 93m depth sea area. Also spectrogram by spectrum data was made in each depth. The results, at both stations the same striped patterns appeared on a range of about 13m and 16m from sea bottom, and on the frequency range of over 50Hz. By theoretical pattern, this spectrum level changed with their phase differences, and the interference relate to the depth of a hydrophone from the sea bottom rather than the depth of sea area. If the frequency increased, the term pattern decreases. That observed patterns coincided with a theoretical interference patterns by both waves at the frequency range of over 100Hz. A great term pattern appeared at the shallow sea area rather than the deep sea.
収録刊行物
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- 日本水産学会誌
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日本水産学会誌 63 (2), 213-221, 1997
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390001206412964992
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- NII論文ID
- 10004850794
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
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- NDL書誌ID
- 4173463
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- 本文言語コード
- en
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- 資料種別
- journal article
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- データソース種別
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- JaLC
- IRDB
- NDLサーチ
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
