[MARMAM] New paper on shipping noise using AIS data (Nathan Merchant)

ndm23 at bath.ac.uk ndm23 at bath.ac.uk
Sat Jun 2 07:48:57 PDT 2012

Dear Colleagues,

my co-authors and I are pleased to announce the (pre-)publication of a  
new method of assessing sound exposure from shipping using passive  
acoustics and AIS data:

Merchant, N.D., Witt, M.J., Blondel, P., Godley, B.J., Smith, G.H.,  
Assessing sound exposure from shipping in coastal waters using a  
single hydrophone and Automatic Identification System (AIS) data.  
Marine Pollution Bulletin (2012),  


Underwater noise from shipping is a growing presence throughout the  
world?s oceans, and may be subjecting marine fauna to chronic noise  
exposure with potentially severe long-term consequences. The  
coincidence of dense shipping activity and sensitive marine ecosystems  
in coastal environments is of particular concern, and noise assessment  
methodologies which describe the high temporal variability of sound  
exposure in these areas are needed. We present a method of  
characterising sound exposure from shipping using continuous passive  
acoustic monitoring combined with Automatic Identification System  
(AIS) shipping data. The method is applied to data recorded in  
Falmouth Bay, UK. Absolute and relative levels of intermittent ship  
noise contributions to the 24-h sound exposure level are determined  
using an adaptive threshold, and the spatial distribution of potential  
ship sources is then analysed using AIS data. This technique can be  
used to prioritise shipping noise mitigation strategies in coastal  
marine environments.

The paper can be downloaded here:


PDFs available on request.

Kind regards,

Nathan Merchant
PhD Researcher
Department of Physics
University of Bath

+44 1225 385543

n.d.merchant at bath.ac.uk

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