Observation of oceanic ambient noise at the IEODO ocean reserch station

Abstract

In the ocean the ambient noise always exists due to water surface agitation, biological activity and shipping traffic. The underwater ambient noise is used as an input parameter[1] to improve the signal to noise ratio of underwater acoustic instruments such as sonar, and it is also utilized as basic data for monitoring of rainfall and wind speed[2 3] on the sea surface. Studies on underwater ambient noise have been performed by Knudsen et al.[4] and Wenz[5]. Recently, the study of ambient noise in the sea around the Korean Peninsula is carried out by Kim et al. [6]. In this study the ambient noise was measured at the Ieodo Ocean Research Station (IORS). Wind speed and water current as surrounding environment parameters were measured. instruments such as sonar, and it is also utilized as basic data for monitoring of rainfall and wind speed[2 3] on the sea surface. Studies on underwater ambient noise have been performed by Knudsen et al.[4] and Wenz[5]. Recently, the study of ambient noise in the sea around the Korean Peninsula is carried out by Kim et al. [6]. In this study the ambient noise was measured at the Ieodo Ocean Research Station (IORS). Wind speed and water current as surrounding environment parameters were measured.