Abstract
Sumamry Objective: Noise is addressed by the EU Marine Framework Strategy Directive (MSFD). Descriptor 11 states that the `Introduction of energy, including underwater noise, is at levels that do not adversely affect the marine environment.` Continuous low frequency sound has been identified by the EU commission as one indicator for measuring good environmental status and member states are asked to provide information on trends in ambient noise levels measured by observation stations. However, the methodology for measuring ambient noise is still in its infancy and it is therefore difficult to implement the requirements of the Directive. This is a study in order to implement an appropiat monitoring regime. The study will help in identifying representative ambient noise monitoring areas in the UK and existing sea observatories that can be used to deploy data recorder. In a pilot project, data on ambient noise will be collected at strategic sites to assess site specific sound levels and to investigate seasonal variation of ambient noise. The results of the study will provide important information about the current state of ambient noise in UK marine waters to identify baseline values for different environmental conditions. The results will also be used to test the applicability of the ambient noise indicator as set forth by the Directive. Key Customer Purpose: This project is of high policy relevance as it directly addresses one of the requirements of the Marine Strategy Framework Directive. The results of the study will be used to assess the monitoring effort necessary for underwater noise within the Directive, including the location of monitoring stations the equipment necessary and the most cost effective way of carrying this out. It also will look at the establishment of a base level for ambient noise.
United Kingdom