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Loss Ness Mometer & Other Seismometers Retrieved by Dublin Institute of Advanced Studies Expedition

13th May 2020
18 seismometers had been deployed in 2018 over a 1500 kilometre area from north to south and over 1,000 km of sea from east to west as part of a project run by the Dublin Institute of Advanced Studies (DIAS) 18 seismometers had been deployed in 2018 over a 1500 kilometre area from north to south and over 1,000 km of sea from east to west as part of a project run by the Dublin Institute of Advanced Studies (DIAS)

Marine Scientists on the RV Celtic Explorer have collected a network of seismometers recording valuable data over the past 19 months in Irish, British and Icelandic waters.

The 18 seismometers had been deployed in 2018 over a 1500 kilometre area from north to south and over 1,000 km of sea from east to west as part of a project run by the Dublin Institute of Advanced Studies (DIAS).

As Afloat previously reported, a “skeleton” team of six scientists and a small crew on the Marine Institute research vessel went to sea last month to retrieve them and returned to Galway this week after three weeks at sea.

Team leader Dr Sergei Lebedev, DIAS seismologist, said the data captured by the seismometers would “shed light on the nature, occurrence, and frequency of earthquakes off our coast, and is fundamental to our understanding of them”.

“The current nature and history of the ocean floor along Ireland's coast is key to our understanding of how the Atlantic evolved and is evolving, and this is important for better understanding both the natural hazards and natural resources offshore," he said.

"For example, slope failures triggered by earthquakes can generate tsunamis in the Irish offshore territory – the data will give us new insights into this hazard,” he said.

The expedition was “time-critical”, as there were fears the data would be lost if the sensors were not retrieved. Physical distancing measures as part of HSE guidelines on the Covid-19 pandemic were in place for the expedition, according to the DIAS team.

"The seismometers have waterproof memory sticks with recordings of earthquakes off the coast of Ireland. To date, these have been poorly understood, but we know they are generally larger than the ones Ireland has onshore. The new data will give us much greater insights into earthquake mechanisms and, also, into the structure of the Earth's interior,” Dr Lebedev said.

"The instruments have made continuous recordings from the last 19 months of the songs of the great baleen whales, including the blue, fin, humpback and North Atlantic right whales. These unique recordings will build our understanding of the migration patterns of the Earth's largest animals and their acoustic environment, known to be crucially important for them,” he said.

Before the seismometers were deployed in 2018, DIAS ran a competition inviting secondary school students to name each one. Suggestions included “The Dude”, “Gráinne”, “Luigi” and “The Loch Ness Mometer”.

During the retrieval expedition, the research team hosted live video links with school classes from St Francis National School in Wicklow, along with St Joseph's College in Tipperary, and a school in Calabria, Italy.

Published in Marine Science
Lorna Siggins

About The Author

Lorna Siggins

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Lorna Siggins is a print and radio reporter, and a former Irish Times western correspondent. She is the author of Everest Callling (1994) on the first Irish Everest expedition; Mayday! Mayday! (2004) on Irish helicopter search and rescue; and Once Upon a Time in the West: the Corrib gas controversy (2010).

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Marine Science Perhaps it is the work of the Irish research vessel RV Celtic Explorer out in the Atlantic Ocean that best highlights the essential nature of marine research, development and sustainable management, through which Ireland is developing a strong and well-deserved reputation as an emerging centre of excellence. From Wavebob Ocean energy technology to aquaculture to weather buoys and oil exploration these pages document the work of Irish marine science and how Irish scientists have secured prominent roles in many European and international marine science bodies.

 

At A Glance – Ocean Facts

  • 71% of the earth’s surface is covered by the ocean
  • The ocean is responsible for the water cycle, which affects our weather
  • The ocean absorbs 30% of the carbon dioxide added to the atmosphere by human activity
  • The real map of Ireland has a seabed territory ten times the size of its land area
  • The ocean is the support system of our planet.
  • Over half of the oxygen we breathe was produced in the ocean
  • The global market for seaweed is valued at approximately €5.4 billion
  • · Coral reefs are among the oldest ecosystems in the world — at 230 million years
  • 1.9 million people live within 5km of the coast in Ireland
  • Ocean waters hold nearly 20 million tons of gold. If we could mine all of the gold from the ocean, we would have enough to give every person on earth 9lbs of the precious metal!
  • Aquaculture is the fastest growing food sector in the world – Ireland is ranked 7th largest aquaculture producer in the EU
  • The Atlantic Ocean is the second largest ocean in the world, covering 20% of the earth’s surface. Out of all the oceans, the Atlantic Ocean is the saltiest
  • The Pacific Ocean is the largest ocean in the world. It’s bigger than all the continents put together
  • Ireland is surrounded by some of the most productive fishing grounds in Europe, with Irish commercial fish landings worth around €200 million annually
  • 97% of the earth’s water is in the ocean
  • The ocean provides the greatest amount of the world’s protein consumed by humans
  • Plastic affects 700 species in the oceans from plankton to whales.
  • Only 10% of the oceans have been explored.
  • 8 million tonnes of plastic enter the ocean each year, equal to dumping a garbage truck of plastic into the ocean every minute.
  • 12 humans have walked on the moon but only 3 humans have been to the deepest part of the ocean.

(Ref: Marine Institute)

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