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Noise characterisation of the Aurora Australis while stationary in Antarctic sea ice

journal contribution
posted on 2023-05-18, 01:38 authored by Alexander, PM, Duncan, A, Neil Bose, Wilkes, D, Lewis, R, de Souza, P
This work investigates the underwater noise propagation of the primary vessel used by the Australian Antarctic Division Aurora Australis while stationary in a configuration and location suitable for under-ice Autonomous Underwater Vehicle (AUV) deployment. It outlines a novel method for recording and validating the noise of a vessel using available equipment and standard deployment options. Numerical modelling using the Fast Multipole Boundary Element Method (FMBEM) is combined with the response to a calibrated source to assess the limitations and residual uncertainty of the experiment. The results of this work indicate that there is a 10 dB re 1 μPa reduction in mean noise by removal of main engine noise and a low point in ship noise at 3.8 kHz. Two hundred metres depth was found to be a preferred depth for uniformity in the noise field.

History

Publication title

Ocean Engineering

Volume

82

Pagination

52-64

ISSN

0029-8018

Department/School

Australian Maritime College

Publisher

Pergamon-Elsevier Science Ltd

Place of publication

The Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1Gb

Rights statement

Copyright 2014 Elsevier

Repository Status

  • Restricted

Socio-economic Objectives

Expanding knowledge in engineering

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