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A geohazard investigation to provide support for ongoing research at the Irish Centre for Research in Applied Geosciences (iCRAG) will be undertaken in the Irish Sea from Thursday 24 October until Wednesday 6 November, weather dependent.

The locations of these works at various shipwreck sites off the Louth coast are provided in Marine Notice No 41 of 2019. The equipment and techniques to be used include:

  • Surveying using multibeam echo sounders and shallow seismics (pinger);
  • Passive acoustic monitors (PAM) deployed at the indicated locations near the seabed to record acoustic data;
  • Seismic sparker equipment to reveal subsurface structure and features;
  • Sediment core taken at indicated locations to characterise the lithological characteristics of the seabed with grab samples taken within a 3nm range of these locations.

The surveys will be completed on a 24-hour schedule by the RV Celtic Voyager (callsign EIQN) which will display appropriate lights and signals.

Acoustic surveying using a multibeam echo sounder and seismic sub-bottom surveys using a sparker/pinger system will be performed during both day and night operations in accordance with safe operating practices regarding MMO procedures and cognisant of fishing gear.

Sediment sampling using cores will be carried out during daylight hours due to limited ship mobility. PAM units will be deployed and retrieved at both night and day as dictated by survey conditions.

Full details of the survey locations as well as contact information are included in Marine Notice No 41 of 2019, a PDF of which is available to read or download HERE.

Published in News Update

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