Ocean ambient noise is generated in many ways such as from winds, rain and shipping. A technique has recently been developed (Harrison and Simons, J. Acoust. Soc. Am, Vol. 112 no. 4, 2002) that uses the vertical directionality of ambient noise to determine seabed properties. It was shown that taking a ratio of upward looking beams to downward produces an estimate of the reflection loss. This te...

Underwater acoustic signal has the non-linear and non-stationary characteristics. Aiming at the issue on noise reduction of underwater acoustic signal, an adaptive noise reduction method of ship-radiated noise based on noiseassisted bivariate empirical mode decomposition is proposed. Firstly, a two-dimensional complex data is built by using one-dimensional real signal and adding Gaussian white ...

Related DatabasesWeb of Science You must be logged in with an active subscription to view this.Article DataHistorySubmitted: 14 September 2020Accepted: 19 February 2021Published online: 10 May 2021Keywordselectromagnetic waves, ambient noise, metamaterial, wireless communicationAMS Subject Headings78A48, 35R60, 35Q61, 78A55Publication DataISSN (print): 0036-1399ISSN (online): 1095-712XPublisher...

Awareness of underwater noise generated from shipping is rising due to environmental concerns in sensitive areas with protected animal species as well as for the world’s oceans as a whole. Individuals interested in underwater noise have attempted to better understand the problem by performing measurements of vessel noise either by direct measurement or by recording sound levels in different oce...