이어도 해양과학기지에서 측정한 해수중 주위잡음의 특성

Title
이어도 해양과학기지에서 측정한 해수중 주위잡음의 특성
Alternative Title
Characteristics of oceanic ambient noise measured at the Ieodo Ocean Research Station
Author(s)
김봉채; 최복경; 김병남; 조홍상
KIOST Author(s)
Choi, Bok Kyoung(최복경)Kim, Byoung Nam(김병남)
Publication Year
2007-03-09
Abstract
In the ocean, ambient noise always exists due to water surface agitation, biological activity and shipping traffic. Studies on underwater ambient noise have been performed by Knudsen (Knudsen et al. 1948) and Wenz (Wenz 1962). From these studies, ambient noise characteristics are famously described as the Knudsen spectra and Wenz curve. Nevertheless, these are limited to the deep sea. Theunderwater ambient noise is used as an input parameter of sonar equation (Urick 1983) to improve the signal-tonoise ratio of underwater acoustic instruments such as sonar. The ambient noise is also utilized as basic data for monitoring of rainfall and wind speed (Lemon et al. 1984; Nystuen 1986) on the sea surface. According to Lemon (1984) and Nystuen (1986), the sound from the whitecaps generated by wind can be used to quantitatively measure wind speed as the number of whitecaps is proportional to wind speed. The sound of rain and drizzle contains relatively more high frequency tones than the sound from wind-only conditions. Recently, studies of ambient noise in the sea around the Korean Peninsula, with a focus on this sea as a shallow water, have been carried out by Kim and Choi. (Kim et al. 1996; Choi et al. 2003). They report the ambient noise level is higherthan that of the deep water as Wenz curve.In this study the ambient noise was measured at the Ieodo Ocean Research Station (IORS) (Shim et al. 2004). The goal of this study is to collect the ambient noise data at the IORS and to estimate what the noise sources are. Wind speed and surface current speed as surrounding environment parameters were measured. In this study, a correlation between the environmental parameters and the ambient noise levels at the IORS are investigated. Investigation for the main ambient noise sources at the IORS are also carried out.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/30664
Bibliographic Citation
2007 이어도 연구 학술세미나 발표 논문집, pp.107 - 110, 2007
Publisher
한국해양연구원
Type
Conference
Language
English
Publisher
한국해양연구원
Related Researcher
Research Interests

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

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