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Displaying items by tag: Sea Level

Discovery of the remains of a “drowned” prehistoric house in north Connemara may be further evidence of sea-level rise along the Atlantic coast in the last millennium.

As The Sunday Times reports today, parts of a small prehistoric dwelling covered by sea except at low spring tide have been identified by archaeologist Michael Gibbons and engineer Shane Joyce on the coast south-west of Clifden, Co Galway.

The site is in a sheltered “lagoon-like setting” on the tip of the Faul peninsula, at the junction of Clifden and Ardbear bays.

Gibbons said that the structure is similar in size to early Neolithic houses, and it is protected from tidal surges by Oileán Gearr or Islandagar, a small island on its western side.

Gibbons said it was further evidence of a “drowned prehistoric landscape”, which has been researched and dated by NUI Galway palaeoecologists Prof Michael O’Connell and Dr Karen Molloy.

O’Connell and Molloy have estimated that sea levels rose by as much as four metres on the Atlantic coast in later prehistory - as in 1,000 years ago – with Galway Bay being younger than originally estimated.

Prof O’Connell said that it was “quite reasonable” to suggest the structure identified by Gibbons and Joyce may be early Neolithic, given that sea level rise occurred in the late Neolithic period.

O’Connell and Molloy’s work focused on tree stumps, believed to be bog pine, which have been exposed at low tide by storms dating back to 2010, along with pollen analysis of coastal peat deposits.

Gibbons said that a shell midden dating from 4,000 BC on the Errislannan peninsula, just south-west of the Faul location, was also evidence of Neolithic settlement by early farmers.

Read The Sunday Times report here

Published in Coastal Notes
Tagged under

Dublin Bay’s sea level seems to be rising faster than forecast — and at twice the global average over the past two decades.

The Irish Times reports on this startling claim from Dun Laoghaire-Rathdown County Council’s (DLRCoCo) climate change action plan, which also notes that weather extremes are “likely to increase in their frequency and intensity”.

The report comes following one of Ireland’s hottest summers on record, itself just months after a first ever Status Red warning for snow was issued by Met Éireann.

Three Dublin local authorities launched their climate action plans on Monday (9 September), with DLRCoCo’s plan pledging to “prioritise nature-based flood defences where possible” over the next five years.

The Irish Times has much more on the story HERE.

Published in Dublin Bay

Royal National Lifeboat Institute (RNLI) in Ireland Information

The Royal National Lifeboat Institution (RNLI) is a charity to save lives at sea in the waters of UK and Ireland. Funded principally by legacies and donations, the RNLI operates a fleet of lifeboats, crewed by volunteers, based at a range of coastal and inland waters stations. Working closely with UK and Ireland Coastguards, RNLI crews are available to launch at short notice to assist people and vessels in difficulties.

RNLI was founded in 1824 and is based in Poole, Dorset. The organisation raised €210m in funds in 2019, spending €200m on lifesaving activities and water safety education. RNLI also provides a beach lifeguard service in the UK and has recently developed an International drowning prevention strategy, partnering with other organisations and governments to make drowning prevention a global priority.

Irish Lifeboat Stations

There are 46 lifeboat stations on the island of Ireland, with an operational base in Swords, Co Dublin. Irish RNLI crews are tasked through a paging system instigated by the Irish Coast Guard which can task a range of rescue resources depending on the nature of the emergency.

Famous Irish Lifeboat Rescues

Irish Lifeboats have participated in many rescues, perhaps the most famous of which was the rescue of the crew of the Daunt Rock lightship off Cork Harbour by the Ballycotton lifeboat in 1936. Spending almost 50 hours at sea, the lifeboat stood by the drifting lightship until the proximity to the Daunt Rock forced the coxswain to get alongside and successfully rescue the lightship's crew.

32 Irish lifeboat crew have been lost in rescue missions, including the 15 crew of the Kingstown (now Dun Laoghaire) lifeboat which capsized while attempting to rescue the crew of the SS Palme on Christmas Eve 1895.

FAQs

While the number of callouts to lifeboat stations varies from year to year, Howth Lifeboat station has aggregated more 'shouts' in recent years than other stations, averaging just over 60 a year.

Stations with an offshore lifeboat have a full-time mechanic, while some have a full-time coxswain. However, most lifeboat crews are volunteers.

There are 46 lifeboat stations on the island of Ireland

32 Irish lifeboat crew have been lost in rescue missions, including the 15 crew of the Kingstown (now Dun Laoghaire) lifeboat which capsized while attempting to rescue the crew of the SS Palme on Christmas Eve 1895

In 2019, 8,941 lifeboat launches saved 342 lives across the RNLI fleet.

The Irish fleet is a mixture of inshore and all-weather (offshore) craft. The offshore lifeboats, which range from 17m to 12m in length are either moored afloat, launched down a slipway or are towed into the sea on a trailer and launched. The inshore boats are either rigid or non-rigid inflatables.

The Irish Coast Guard in the Republic of Ireland or the UK Coastguard in Northern Ireland task lifeboats when an emergency call is received, through any of the recognised systems. These include 999/112 phone calls, Mayday/PanPan calls on VHF, a signal from an emergency position indicating radio beacon (EPIRB) or distress signals.

The Irish Coast Guard is the government agency responsible for the response to, and co-ordination of, maritime accidents which require search and rescue operations. To carry out their task the Coast Guard calls on their own resources – Coast Guard units manned by volunteers and contracted helicopters, as well as "declared resources" - RNLI lifeboats and crews. While lifeboats conduct the operation, the coordination is provided by the Coast Guard.

A lifeboat coxswain (pronounced cox'n) is the skipper or master of the lifeboat.

RNLI Lifeboat crews are required to follow a particular development plan that covers a pre-agreed range of skills necessary to complete particular tasks. These skills and tasks form part of the competence-based training that is delivered both locally and at the RNLI's Lifeboat College in Poole, Dorset

 

While the RNLI is dependent on donations and legacies for funding, they also need volunteer crew and fund-raisers.

© Afloat 2020

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