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Displaying items by tag: Erosion

#CoastalNotes - Heavy rains last week caused the latest in a series of landslides that has cut off a coastal village in Co Kerry, as TheJournal.ie reports.

Only pedestrian access is currently permitted on the Cliff Road to Rossbeigh after a partial collapse of the roadside into the sea on Thursday (17 September).

But the cliff fall is no surprise to locals who have complained for the last two years over increasing erosion caused by various heavy rains and severe storms.

TheJournal.ie has more on the story HERE.

Published in Coastal Notes

#CoastalNotes - Solutions to deal with the erosion of Ireland's coastline to not have to cost "millions", a geography lecturer tells The Irish Times.

The comments by University College Cork's Dr Max Kozachenko follow a less heartening scenario described by fellow UCC academic Prof Robert Devoy, who said last month that erosion rates - exacerbated by increasingly extreme weather - will soon force Ireland's coastal counties to look "very clinically" at what parts are most worth saving via expensive engineering works.

However, Dr Kozachenko says that such a take-it-or-leave-it solution is "simplistic" when a co-ordinated approach involving coastal monitoring and new approaches to managing the effects of wind and wave action could stem the damage to Ireland's coastline for little expense.

He cites the placing of rock fragments in front of protective rock armouring or concrete walls to scatter waves and dissipate their energy as a cheap but effective option, and also notes the success of offshore artificial reefs in Japan that have had the added benefit of assisting in biodiversity.

The Irish Times has much more on the story HERE.

Published in Coastal Notes

#Coasts - Increasing coastal erosion and weathering will soon force Ireland to make hard decisions about what parts of the coastline are too expensive to protect, according to a university professor.

As The Irish Times reports, Prof Robert Devoy of University College Cork says that with erosion rates threatening to jump far beyond the current average of up to 1 metre a year, Ireland's coastal counties would have to look "very clinically" at what parts are most worth concentrating their engineering efforts - expensive measures that simply cannot be afforded for all coastal areas.

The senior lecturer in the UCC Department of Geography says: "We need to assess which bits of the coast are most vulnerable to flooding and erosion and which bits of coast from a heritage viewpoint are important to retain and protect."

This sobering warning comes after Lorna Siggins' commentary on the state of Ireland's coastal marine environment, as six new marine protected areas are set to be enacted in law.

The six sites around the coast earmarked for designation as Special Areas of Conservation were proposed by Heritage Minister Jimmy Deenihan more than a year ago

But as Siggins states: "There’s turbulence ahead, if the State’s approach to fulfilling the habitats directive on land is anything to go by."

Aside from the "inconsistencies, poor communication and lack of stakeholder engagement" of the likes that have undermined bog conservation efforts, there's also the "survival of the fittest" attitude among the fishing fleet engendered by uneven implementation of the Common Fisheries Policy to contend with.

And according to Siggins, even the reformed CFP spearheaded by Marine Minister Simon Coveney will do "little to protect sensitive spawning grounds".

The Irish Times has much more on the story HERE.

Published in Coastal Notes
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Marine Institute Research Vessel Tom Crean

Ireland’s new marine research vessel will be named the RV Tom Crean after the renowned County Kerry seaman and explorer who undertook three major groundbreaking expeditions to the Antarctic in the early years of the 20th Century which sought to increase scientific knowledge and to explore unreached areas of the world, at that time.

Ireland's new multi-purpose marine research vessel RV Tom Crean, was delivered in July 2022 and will be used by the Marine Institute and other State agencies and universities to undertake fisheries research, oceanographic and environmental research, seabed mapping surveys; as well as maintaining and deploying weather buoys, observational infrastructure and Remotely Operated Vehicles.

The RV Tom Crean will also enable the Marine Institute to continue to lead and support high-quality scientific surveys that contribute to Ireland's position as a leader in marine science. The research vessel is a modern, multipurpose, silent vessel (designed to meet the stringent criteria of the ICES 209 noise standard for fisheries research), capable of operating in the Irish Exclusive Economic Zone (EEZ). The Tom Crean is able to go to sea for at least 21 days at a time and is designed to operate in harsh sea conditions.

RV Tom Crean Specification Overview

  • Length Overall: 52.8 m
  • Beam 14m
  • Draft 5.2M 

Power

  • Main Propulsion Motor 2000 kw
  • Bow Thruster 780 kw
  • Tunnel thruster 400 kw

Other

  • Endurance  21 Days
  • Range of 8,000 nautical miles
  • DP1 Dynamic Positioning
  • Capacity for 3 x 20ft Containers

Irish Marine Research activities

The new state-of-the-art multi-purpose marine research vessel will carry out a wide range of marine research activities, including vital fisheries, climate change-related research, seabed mapping and oceanography.

The new 52.8-metre modern research vessel, which will replace the 31-metre RV Celtic Voyager, has been commissioned with funding provided by the Department of Agriculture, Food and the Marine approved by the Government of Ireland.

According to Aodhán FitzGerald, Research Vessel Manager of the MI, the RV Tom Crean will feature an articulated boom crane aft (6t@ 10m, 3T@ 15m), located on the aft-gantry. This will be largely used for loading science equipment and net and equipment handling offshore.

Mounted at the stern is a 10T A-frame aft which can articulate through 170 degrees which are for deploying and recovering large science equipment such as a remotely operated vehicle (ROV’s), towed sleds and for fishing operations.

In addition the fitting of an 8 Ton starboard side T Frame for deploying grabs and corers to 4000m which is the same depth applicable to when the vessel is heaving but is compensated by a CTD system consisting of a winch and frame during such operations.

The vessel will have the regulation MOB boat on a dedicated davit and the facility to carry a 6.5m Rigid Inflatable tender on the port side.

Also at the aft deck is where the 'Holland 1' Work class ROV and the University of Limericks 'Etain' sub-Atlantic ROV will be positioned. In addition up to 3 x 20’ (TEU) containers can be carried.

The newbuild has been engineered to endure increasing harsher conditions and the punishing weather systems encountered in the North-East Atlantic where deployments of RV Tom Crean on surveys spent up to 21 days duration.

In addition, RV Tom Crean will be able to operate in an ultra silent-mode, which is crucial to meet the stringent criteria of the ICES 209 noise standard for fisheries research purposes.

The classification of the newbuild as been appointed to Lloyds and below is a list of the main capabilities and duties to be tasked by RV Tom Crean:

  • Oceanographic surveys, incl. CTD water sampling
  • Fishery research operations
  • Acoustic research operations
  • Environmental research and sampling operation incl. coring
  • ROV and AUV/ASV Surveys
  • Buoy/Mooring operations