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UCD Wave Group research blog

Maths with creativity...

The wave group has recently published work in the Computers and Fluids journal. The work focuses on the performance analysis of the internally developed tsunami code: Volna-OP2. Volna-OP2 is a robust and efficient code capable of simulating the complete life cycle of a tsunami whilst harnessing the latest High Performance Computing architectures.

An in-depth error analysis of the numerical scheme implemented in the code is given, with a novel decomposition of the numerical errors into the dispersion and dissipation components explored. Most tsunami codes exhibit amplitude smearing and/or phase lagging/leading, so the error decomposition shown here is a new approach and novel tool for explaining these occurrences. 

To date, Volna-OP2 has been widely used by the tsunami modelling community. In particular its

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The UCD Wave Group has researchers from all over the world. Dr Leandro Fernández, who works on the RESOURCECODE project, gave a webinar in Spanish on Friday 12 June 2020, entitled "Datos meteorológicos y modelos de predicción global para zonas marítimas" and hosted by the School of Civil Engineering of Universidad Santo Tomás in Tunja, Colombia. The webinar is available on YouTube.

La UCD cuenta con un grupo de investigación dedicado al estudio de la dinámica de las olas oceánicas denominado 'Wave group', en el cual participan investigadores de diferentes países.  Uno de sus integrantes, el Dr Leandro Fernández, que actualmente se encuentra trabajando en el marco del proyecto RESOURCECODE, ha dado un Webinar en

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Towards Tsunami Threat Reduction for the Irish Coastline

The wave group are delighted to announce some newly published work in the journal Geosciences, which is part of a special issue: Advances in tsunami science towards tsunami threat reduction. The work focuses on the tsunami threat posed by the Lisbon 1755 earthquake event on the Irish coastline and was carried out in collaboration with Brian McConnell of Geological Survey Ireland. 

As there is no general consensus on the earthquake source parameters for the Lisbon event, multiple sources introduced in the literature are investigated. The tsunami hazard associated with the event is captured on three gradated levels. With the internally developed massively parallel tsunami code, Volna-OP2, used to simulate the resultant tsunami waves. Regional faster than real time simulations for the

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Prof. Dias will co-chair the European Fluid Mechanics and Turbulence Conference (EFMTC2021) at ETH Zurich from June 20-24, 2021.

Due to the COVID-19 pandemic the EUROMECH council decided to combine the 13th European Fluid Mechanics Conference (EFMC13) and the 18th European Turbulence Conference (ETC18). ETC18 was originally supposed to take place in Dublin in August 2021.

This conference will bring together scientists from all fields of Fluid Dynamics.

For further information please visit the EFMTC2021 homepage http://www.efmtc2021.ethz.ch/.

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The Wave Group projects involve a lot of numerical simulations, dealing in particular with extreme sea states, using nonlinear wave propagation models. ICHEC, the Irish Centre for High-End Computing, provides core-hours to three kinds of projects. Class A projects are intended for consortia concerned with high impact problems. Prof. Dias was successful with his Class A application. The project has been given 5M core-hours. It will start on 1 June 2020 and will last for a couple of years. 

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A new series of weekly webinars on Mathematics of Planet Earth will start on Friday 8th May at 15.30 CEST (14.30 BST).

These webinars are designed to give the opportunity to early career researchers, PhD students and Post-Docs, working on topics related to Mathematics of Planet Earth, to share their work with researchers at all levels in the field.

The following topics will be covered:

  1. PDEs and SPDEs in fluid-dynamics;
  2. Numerical models for fluid-dynamics;
  3. Dynamical systems: critical transitions and linear response in the Earth system;
  4. Data analysis methods for climate records.

The deadline to register as a speaker or attendee is May 7th (at midnight CEST).

If you would like to participate as an attendee or a speaker please visit https://sites.google.com/view/mpe2020-webinars/home for more details.

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Online Short Seminars: Dan Giles on Tsunami Warning Tools

My first task as the newly elected Vice President of the SIAM-IMA Dublin area student chapter was to produce a short video detailing my research. My research focuses on the development of operational tools for tsunami warning centres. As this video was aimed at introducing my research to a wide audience, it simply provides a brief introduction. So if you would like to learn more about the fascinating dynamics of tsunamis and how warning centres try to mitigate their damages, please check out the quick 4 min video here: https://www.youtube.com/watch?v=BMWprUeGPa0

Making this short video doubled as great practice for the Flash Talk series run by UCD's Earth Institute. This series was organised to mark the 50th anniversary of Earth Day.

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In these dark times, when good news is scarce, science always pushes the boundaries and offers hope…

The world record set by Engineer Arnaud Disant and his team in 2018 has now been officially verified: offshore WiFi transmission of 19.4 nautical miles off Cork harbour, “The longest ever attempted transmission between a vessel offshore and a lighthouse on a distant shore, without using satellite communication of cellular data like 3G or 4G…”

I am proud to have been a witness to the achievement of this record. A scientific paper will soon be published in the MTS (Marine Technology Society) Journal. 

Congratulations to Arnaud! Your record is fantastic news for marine data collection.

Professor Frederic Dias (UCD)

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The UN International Day of Women and Girls in Science

F.O.D.—a First. Only. Different. We are a very select club, but there are more of us out there than you’d think. We know one another on sight. We all have that same weary look in our eyes. The one that wishes people would stop thinking it remarkable that we can be great at what we do while black, while Asian, while a woman, while Latino, while gay, while a paraplegic, while deaf. But when you are an F.O.D., you are saddled with that burden of extra responsibility—whether you want it or not.” [1, Chapter 8]

The International Day of Women and Girls in Science took place on February 11th, 2020. Its aim is to raise awareness

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The 2020 SIAM Conference on Parallel Processing & Scientific Computing

Home to the world’s largest internet company as well as other renowned tech giants, Seattle seems like the perfect place for a meeting on high performance computing. This year’s SIAM Conference on Parallel Processing & Scientific Computing - SIAM PP20 for short - took place right in the centre of the rainy city.

Hundreds of scientists from all over the world met to discuss emerging issues in scientific computing. From best practices in benchmarking to reducing communications between processors and code reproducibility, some of which have been topics of interest for many years as anyone learning about David Bailey’s “12 Ways to fool the masses” (1991) in an introductory course on computing can probably attest to.

Of particular interest to

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Highwave golive

On 2 October 2019, Professor Frédéric Dias gave an official presentation of the ERC project HIGHWAVE. There was a variety of guests including the UCD VP for Research, Orla Feely, the head of the School of Mathematics and Statistics, Brendan Murphy, and representatives of the following institutions: Met Eireann, Commissioners of Irish Lights, Royal Irish Academy, Irish Air Corps, Marine Institute, ICHEC, The Office of Public Works. Several members of UCD College of Engineering and Architecture, as well as the Wave Group led by Professor Dias, also attended.

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Professor Dias explaining the occurrence of wave breaking.

The presentation gave a brief overview of previous projects that looked at rogue waves and coastal boulder transport and led to the main objectives

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