Data available

This dataset has been gathered at Ramsey Sound, Swansea Bay, Port Talbot and the Hebrides. Since 2008,underwater noise has been recorded with calibrated hydrophones (HTI/CRT) and in house hydrophones able to monitor acoustic data from 10Hz to 150kHz. These hydrophones are plugged into a 4 channel submersible data logger from Rtsys.

Ramsey Sound is a high energy spot where the current flow can reach 8 knots at Spring tide. The methodology used to record background noise was to switch off the engine upstream of Ramsey Sound, immerse the hydrophone to 20 m depth and drift downstream with the current. Thus, in this data base, you can find recordings carried out in Spring and Summer, during Ebb and Flood and also at Neap and Spring tides. Ramsey Sound recordings include a variety of sound sources such as influence of the tide on background noisesedimentation noise and boat noise. The team also discovered an unknown source of sound similar to snapping shrimp or sea horse noise. The research is ongoing.

Swansea recording located in Swansea Bay & Mumbles. The Marine Energy Research Group focused on pile driving and vibro drilling noise which occurred during the construction of the RNLI lifeboat station. The database includes ambient, barge movement noise, deck work, vibro drilling and pile driving noise up to 1nm from the source.

Underwater acoustic sound has been gathered at Port Talbot dock. Port Talbot dock being a noisy industrial area, the LCRI Marine monitored underwater ambient noise and harbour porpoise clicks during two days using 2/3 hydrophones. 

In collaboration with universities (Bristol, Newcastle, St Andrews) and industrial partners (Ultra Electronics, Baker consultants), the consortium work along the 3rd Round offshore wind turbine test site at Blyth, UK. This work consisted on undertaking a baseline of underwater ambient noise and marine mammals distribution. The BARC consortium monitored ambient noise, marine mammals activities using a towed array, drifting buoys and deployed hydrophone. Drilling noise from the NOAH’s anemometric hub installation has also been monitored.  This work was funded by the National Environmental Research Council (NERC).

For more details please contact Mr Merin Broudic