전달모델을 통한 warm eddy에서 저주파수 음파의 전달에 관한 연구

Title
전달모델을 통한 warm eddy에서 저주파수 음파의 전달에 관한 연구
Alternative Title
Study on Low-Frequency Sound Propagation through a Warm Eddy in The East/Japan Sea by Propagation Model
Author(s)
김봉채; 최복경
KIOST Author(s)
Choi, Bok Kyoung(최복경)
Publication Year
2008-07-29
Abstract
It has been known that sound waves in the sea generally propagate under the influence of sea surface wave, water depth, sound speed profile, and sea floor sediment etc. In particular, an abrupt change of the sound speed profile with depth in an eddy can greately affect the sound propagation. Many studies on the sound propagation through eddies and oceanic fronts have been done in 1980s. Eddies are frequently generated at rhe polar front of the East/Japan Sea near the Korean Peninsula. Warm eddy with diameter of about 200 km is often observed in the East/Japan Sea. Sound speed profile is affected within about 300 m of water depth at a center of the eddy. This variation can affect long-range propagation of underwater sound wave. We perform numerical calculations by using a range-dependent acoustic propagation model for explanation of the experimental results on low-frequency sound propagation across the observed eddy are investigated by the propagation model.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/29847
Bibliographic Citation
제4차 KORDI-POI 동해모니터링 워크숍, pp.6 - 7, 2008
Publisher
Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Science
Type
Conference
Language
English
Publisher
Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Science
Related Researcher
Research Interests

Underwater Acoustics,Bubble Acoustics,Marine Defense & Safety,수중음향,기포음향,해양방위·안전

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