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

作者：Alexander Polly^*; Duncan Alec; Bose Neil; Wilkes Daniel; Lewis Ron; de Souza Paulo

来源：Ocean Engineering, 2014, 82: 52-64.

DOI：10.1016/j.oceaneng.2014.02.030

• Ship noise
• Underwater acoustics
• Aurora Australis

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 mu Pa 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.

• 出版日期2014-5-15
• 单位CSIRO