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2017-06-02 – Agallamh le Blas ar BBC Raidió Uladh BBC Gaeilge T Blake interview

2nd of June 2017 – Interview for the BBC Radio Ulster – Thomas Blake, the Director of Observational Seismology at the Dublin Institute for Advanced Studies speaks about the strength of Irish earthquakes and their regularity.

Listen to this interview here: http://www.bbc.co.uk/programmes/p054r7r3

2017-05-18, Earthquake in Irish Sea, M1.3

An earthquake with magnitude ML 1.3 occurred on the 18th May 2017 at 23:04:12 UTC in the Irish Sea. The epicentral location of this event is 53.05N, 5.49 W, about 40km off the Wicklow coast, see map below.

The earthquake was detected by seismic stations of the Irish National Seismic Network (INSN) and the British Geological Survey (BGS), see seismograms below.

The epicentre is close to the location where a similar earthquake with magnitude ML 0.9 occurred on the 10th March 2017, see here for more information. Real-time information of automatic INSN event detections can be accessed  on the INSN homepage at https://www.insn.ie/events.

Andrea Licciardi wins outstanding Student presentation at EGU 2017

During the Geodynamics division meeting at the 2017 EGU general assembly, that took place in Vienna on April 25, DIAS former PhD-student, Andrea Licciardi has been awarded with the Outstanding Student Presentation and Pico (OSPP award). Andrea presented new evidence about crustal anisotropy along the North-Anatolian Fault system obtained using passive seismic observations. This study is a joint collaboration between DIAS, GFZ and Istanbul Technical University. His poster was titled: “Crustal anisotropy along the North Anatolian Fault Zone from receiver functions”

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DIAS Research Forum 2017 – Wednesday 17th May

 

An inter-disciplinary research forum has been scheduled for Wednesday 17 May 2017, 3-5pm at Burlington Road. The forum is intended to be an informal event that provides post-doctoral scholars and PhD students with the opportunity to share and discuss their current research with scholars and staff from across the three schools of DIAS.

There will be no main speakers at the event. Instead, participants will be assigned a space where they can share and discuss their research interests. Participants are encouraged to present a poster which visually complements their research, and allows them to explain what they do to all DIAS staff. In instances where a poster presentation is not appropriate, participants should feel free to develop an alternative approach.

The forum presents a great opportunity for scholars to sharpen their academic presentation and public outreach skills in an informal setting, while also getting to know colleagues from across the Institute.

The organisers strongly encourage scholars from all three schools to participate in the forum. A coordinator from each section will liaise with participants regarding their presentations.

Participants are asked to register here prior to Friday 12 May.

Section Coordinators:
Celtic Studies - Eibhlín Nic Dhonncha eibhlin@celt.dias.ie
CP, Astrophysics - Eileen Flood eflood@cp.dias.ie & Anne Grace ag@cp.dias.ie
CP, Geophysics - Clare Horan choran@cp.dias.ie
Theoretical Physics - George Rogers grogers@stp.dias.ie
Please contact your section coordinator with any queries.

All DIAS staff are welcome to attend.

 

2017-4-10 – Seminar by Prof. Tarje Nissen-Meyer

10 April 2017Seminar

When: 16:00 on Monday, 10th April 2017
Where: DIAS, Geophysics Section, 5 Merrion Square, Dublin 2, (library)

Speaker: Prof. Tarje Nissen-Meyer
Title: Occam or not? On the interaction of waves with structure.

2017-4-5 – Seminar by Prof. Heiner Igel

5 April 2017Seminar

When: 16:00 on Wednesday, 5th April 2017
Where: DIAS, Geophysics Section, 5 Merrion Square, Dublin 2, (library)

Speaker: Prof. Heiner Igel (Ludwig-Maximilians-University München, Germany)
Title: Earth’s Rock and Roll: Rotational Motions in Seismology.

2017-3-15 – Seminar by Dr. Sean McKenna

15 March 2017Seminar

When: 15:30 on Wednesday, 15th March 2017
Where: DIAS, Geophysics Section, 5 Merrion Square, Dublin 2, (library)

Speaker: Dr. Sean McKenna (IBM research in Dublin)
Title: Modeling Ground Water Flow and Transport in Strongly Heterogeneous Formations.

Abstract:

Transmissivity in heterogeneous and fractured media can range over many orders of magnitude.  Predictive modeling within probabilistic risk assessment calculations requires numerical representations of these heterogeneous formations.  Here, an example problem for a geologic repository is used to demonstrate the application of continuous and indicator geostatistics to create a set of seed fields conditioned to a complex geologic conceptual model and local measurements of transmissivity and storativity.  Inverse parameter estimation with pilot points is used to modify these seed fields to condition them to observations of hydraulic pressure including the results of over 20 years of hydraulic testing.   The resulting fields are used as input to an advective transport model.  In order to quantify uncertainty in the transport predictions, multiple seed fields are run through the computationally expensive inverse calibration process.  Several approaches to decreasing this computational load through decomposition of the parameters into a solution space and a null-space are examined and the impacts of each approach on the calibration and the advective travel time are quantified.

 

2017-03-10, Earthquake in Irish Sea, M0.9

On the 10th March 2017 at 05:06:25 UTC an earthquake of magnitude ML 0.9 occurred in the Irish Sea, approximately 50km off the coast of Wicklow, with the epicentral location 53.04N, 5.51W, see map below.

The event was recorded at Irish National Seismic Network (INSN) stations and at several British Geological Survey (BGS) stations in Wales and the Isle of Man, see seismograms below.

This earthquake was too weak to be felt by humans and occurred in a region of the Irish Sea for which several events have been detected in the past, see map on this INSN page.

New insights into how continuous seismic signals announce an eruption

In the recently published Nature Geoscience paper a diverse group of scientists based at DIAS and other research institutes in Ireland and Iceland developed a new understanding of seismic signals prior to an eruption. The focus of the study is an eruption in Iceland in 2014/15 that was preceded by two weeks of increased, migrating seismicity. This seismicity is the noise of the breaking crust at depth and gave scientists the possibility to ‘watch’ how magma propagated horizontally until it eventually made it to the Earth’s surface. However, the puzzling observation was that no earthquakes occurred at less than 3 km depth, although magma passed through this region. We found that a long-lasting continuous seismic signal, called tremor, exists at this depth instead. This tremor was usually understood as being caused by moving fluids, but it seems that it consists instead of millions of tiny earthquakes that are so closely spaced that they merge into one another and appear as tremor. It seems that the uppermost part of the crust is too weak to generate big earthquakes and it therefore breaks through many small earthquakes. In our paper we describe how the crust beneath the ice opened little by little in about 19 hours at a speed of 220 m/h. As such eruptions beneath ice can distribute huge amounts of ash in the air, understanding these signals is important for volcano monitoring and eruption early-warning.

Nicolas Luca Celli Wins Best Student Talk Prize

At the 2017 Irish Geological Research Meeting (IGRM) that took place at Trinity College Dublin on March 4-6, the prize for the best talk by a student was awarded to Nicolas Luca Celli, DIAS Geophysics. Nicolas spoke on his research on seismic tomography and was congratulated by the jury and by colleagues from across Ireland on an outstanding presentation.
His talk was titled “Waveform Tomography of the North Atlantic Region.”

Photo: Patrick Roycroft (IGA)

What's the weather like on exoplanets? bit.ly/2xMF4Go Find out tomorrow at #DIASDublin talk @ucddublin bit.ly/2eGn1JH

test Twitter Media - What's the weather like on exoplanets? https://t.co/eU3zgrTzzv Find out tomorrow at #DIASDublin talk @ucddublin https://t.co/dAuk9VGybi https://t.co/AwA7MbVbKT

Congrats to Dr. Eva Eibl who came 2nd at the 'Falling Walls' competition at TCD tonight. Her talk was on volcano eruption forecasting

test Twitter Media - Congrats to Dr. Eva Eibl who came 2nd at the 'Falling Walls' competition at TCD tonight. Her talk was on volcano eruption forecasting https://t.co/5bcJ8HeA01

Still plenty of time to meet us! Hear all about our work on earthquakes and volcanoes!

test Twitter Media - Still plenty of time to meet us! Hear all about our work on earthquakes and volcanoes! https://t.co/w0Rc9efPui
test Twitter Media - Still plenty of time to meet us! Hear all about our work on earthquakes and volcanoes! https://t.co/w0Rc9efPui

Congratulations to Prof. Sergei Lebedev on his successful grant application ow.ly/8e6o30fk5po