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Eoghan Holohan

Associate Professor

School Of Earth Sciences
Science Centre - West
Belfield
Dublin 4

Tel: +353 1 7162604
Email: eoghan.holohan@ucd.ie

Biography

Eoghan's main research interest is the development of focused subsidence phenomena. Natural focused subsidence phenomena include sinkholes in karst regions or pit-craters and collapse calderas in volcanic regions.  Man-made subsidence phenomena occur due to mining, groundwater pumping and hydrocarbon extraction. He is also generally interested in all things volcanic and tectonic.

Eoghan completed an undergraduate geology degree in Trinity College Dublin (TCD) in 2002. He spent one year (2006-7) as an Assistant Lecturer in structural geology in University College Dublin (UCD), and then joined the Fault Analysis Group on a IRCSET-funded post-doctoral fellowship in 2007-2009. He was awarded a PhD for an experimental study of the structural evolution of caldera collapse from TCD in 2008. Eoghan then won an IRCSET-Marie Curie INSPIRE international mobility fellowship (2009-2012) that facilitated a collaborative research project based at both UCD and the German Research Centre for Geosciences (GFZ) in Potsdam, Germany. Eoghan subsequently took up a research scientist position at GFZ Potsdam (2012-2015), before re-joining UCD in 2016 as a College Lecturer in structural geology and tectonics. Since July 2017, he is an associate professor of earth sciences.



Professional

Honours and Awards

Year: 2006.
Title: Award for Outstanding Student Paper at the American Geophysical Union Fall Meeting, San Francisco
Year: 2005.
Title: Bob Hunter Memorial Prize for best student talk at the Volcanic and Magmatic Studies Group conference
Year: 2007.
Title: IRCSET Post-Doctoral Research Fellowship
Year: 2005.
Title: Broad Curriculum Postgraduate Teaching Fellowship
Year: 2003.
Title: Broad Curriculum Postgraduate Teaching Fellowship
Year: 2002.
Title: Trinity College Postgraduate Award
Year: 2005.
Title: Trinity College Postgraduate Continuing Award
Year: 2005.
Title: Enterprise Ireland International Collaboration Travel Award
Year: 2009.
Title: INSPIRE International Mobility Fellowship in Science, Engineering & Technology (IRCSET/Marie Curie Actions)

Associations

Association: American Geophysical Union, Function/Role: Member
Association: European Geosciences Union, Function/Role: Member
Association: Irish Geological Association, Function/Role: Member
Association: Volcanic and Magmatic Studies Group, Function/Role: Member
     

Conference Contributions

Hensch M., Dahm T., Cesca S., Heimann S., Rivalta E., Hjörleifsdóttir V., Holohan E.P, Jónsdóttir K., Kristín Vogfjörð (2015) Bruchmechanismen von Erdbeben im Zusammenhang mit der lateralen Dikeintrusion und dem Calderakollaps am Bárðarbungavulkan (Island) seit August 2014. [Published Abstract], 75. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG), Hannover, Germany , 23-MAR-15 - 26-MAR-15.
Dahm T., Heimann S., Cesca S., Holohan E.P., Al-Halbouni D. und Jousset P. (2015) Beiträge der Seismologie zur Untersuchung der Bruchmechanik von Erdfällen, Stollen- und Caldera-Einstürzen. [Non Refereed Paper/Abstract Presented at Conference], 75. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG), Hannover, Germany , 23-MAR-15 - 26-MAR-15.
Poppe S., Delcamp A., Galland O. & Holohan E.P. (2015) QuAnMoVolc: Quantifying Analogue Models in Volcanology Workshop. [Conference Organising Committee Member], IUGG Meeting 2015, Prague, Czech Republic , 25-JUN-15 - 25-JUN-15.
Galland O. & Holohan E. (2014) Volcanism and Volcanotectonics. [Chaired Session], GeoMod 2014, Potsdam, Germany , 31-AUG-14 - 05-SEP-14.
Poppe S., Holohan E. P., Delcamp A., Kervyn M., Byrne P.K, & van Wyk de Vries B. (2013) An experimental study of the volcano-sagging to volcano-spreading transition [1W_2F-P31]. [Refereed Abstracts], IAVCEI Scientific Assembly 2013, Kagoshima, Japan , 21-JUL-13 - 24-JUL-14.
Poppe S., Holohan E. P., Boone M., Pauwels E., Cnudde V., & Kervyn M. (2013) Analogue caldera collapse models characterized with radiography and computerized X-ray micro-tomography [3A1_3C-O5]. [Refereed Abstracts], IAVCEI Scientific Assembly 2013, Kagoshima, Japan , 20-JUL-14 - 24-JUL-14.
Holohan E. P., Schöpfer M. P. J., Sudhaus H., Walter T. R., & Walsh J. J. (2013) Advances in volcano-tectonic modeling from the Distinct Element Method. [Invited Oral Presentation], MeMoVolc International Workshop on Mechanics of Magma Emplacement and Volcano-tectonics, Oslo, Norway , 04-FEB-13 - 06-FEB-13.
Poppe S., Holohan E.P., Boone M., Pauwels E., Cnudde V., & Kervyn M. (2013) Sinkholes, pit-craters and calderas: Analogue models of depletion-induced collapse analyzed by computed X-ray micro-tomography. [Poster Presentation], 1st Workshop on Advances in Quantitative Analogue Modeling (AiQAM), Potsdam, Germany , 23-SEP-13 - 25-SEP-13.
Holohan E. P., Poppe S., Kervyn M., Delcamp A., Byrne P.K, & van Wyk de Vries B. (2013) An experimental study of the volcano-sagging to volcano-spreading transition. [Poster Presentation], 1st Workshop on Advances in Quantitative Analogue Modeling (AiQAM), Potsdam, Germany , 23-SEP-13 - 25-SEP-13.
Holohan E. P., Walter T. R., Schöpfer M. P. J., Walsh J. J., Orr T., & Poland, M. (2013) The onset and evolution of pit crater collapse: insights from Pu'u O'o, Hawaii, in 2011. [Oral Presentation], 73. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG), Leipzig, Germany , 04-MAR-13 - 07-MAR-13.
Holohan E. P., Walter T. R., Schöpfer M. P. J., Walsh J. J., Orr T., & Poland, M. (2013) The onset and evolution of pit crater collapse: insights from events at Pu'u O'o, Hawaii, in 2011. [Oral Presentation], Volcanic and Magmatic Studies Group Meeting 2013, Bristol, U.K , 07-JAN-13 - 09-JAN-13.
Holohan E.P., Schöpfer M.P.J., and Walsh J.J.; (2010) Stress and Faulting during Caldera Subsidence: New Perspectives on the Theories of E.M. Anderson from DEM numerical models. [Oral Presentation], Stress controls on faulting, fracturing and igneous intrusion in the Earth's crust - Memorial Conference for E.M. Anderson, Glasgow, U.K , 06-SEP-10 - 08-SEP-10.
E. Cañón-Tapia, E. Herrero-Bervera, E. Holohan, M. Kervyn ; (2009) Co-organised & Chaired Session - V23E Volcano Tectonics: New Insights From Earth and Other Planets. [Conference Organising Committee Member], American Geophysical Union (AGU) Fall Meeting, San Fransisco, USA , 15-DEC-09 - 15-DEC-09.
Holohan E.P., Schöpfer M.P.J., and Walsh J.J.; (2009) Discrete Element Method (DEM) Models of Caldera Subsidence. [Oral Presentation], Structural and Petrological AdvanceS in Earth-sciences (SPASE) Workshop, Uppsala, Sweden , 05-MAY-09 - 05-MAY-09.
Holohan E.P., Troll V.R., Errington M., Donaldson C.H., Nicoll G. and Emeleus C.H., ; (2009) Volcanic and sedimentary processes on an uplifted and subsided magma chamber roof: evidence from the Southern Mountains Zone, Isle of Rum, Scotland. [Oral Presentation], Irish Geological Research Meeting 2009, Dublin, Ireland , 20-FEB-09 - 22-FEB-09.
O.Galland and E. Holohan ; (2008) Organised and convened session MVP-06 - The construction/destruction of magmatic and volcanic systems: New insights into magma-tectonic and volcano-tectonic processes in the Earth's crust. [Conference Organising Committee Member], 33rd International Geological Congress, Oslo, Norway, 2008, Oslo, Norway , 13-AUG-08 - 14-AUG-08.
Mathieu, L., Holohan, E.P., Troll V.R and van Wyk de Vries B.; (2007) The shape evolution of intrusions: an experimental approach. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group (VMSG) meeting, Oxford, UK, Oxford, UK , 06-JAN-07 - 07-JAN-07.
Wark, D.A. and Holohan, E.; (2006) Session Chair - What makes an eruption 'super'? New methods yield new insights about very large calderas and their eruptive products. [Chaired Session], American Geophysical Union (AGU) Fall Meeting, San Francisco, USA , 13-DEC-06 - 13-DEC-06.
Nicoll, G.R., Holohan, E.P., Troll V.R., Donaldson, C.H., Emeleus, C.H. and Ellam, R.; (2006) The Am Mám intrusion breccia: a window into early magma-crust interaction and the felsic episodes of the Rum Centre, Scotland. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group Meeting 2006, Leeds, U.K, Leeds, U.K , 07-JAN-06 - 08-JAN-06.
Byrne, P.K., Holohan, E.P., Baxter, A.T., B. Van Wyk de Vries, Troll V.R. and M.-A. Longpré ; (2006) Investigating the role of competency contrasts in debris avalanche initiation: An analogue modelling approach. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group Meeting 2006, Leeds, U.K, Leeds, U.K , 07-JAN-06 - 08-JAN-06.
Deegan, F., Holohan, E.P. and Troll V.R.; (2006) An experimental study of differential roof loading on caldera collapse. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group Meeting 2006, Leeds, U.K, Leeds, UK , 07-JAN-06 - 08-JAN-06.
Holohan, E.P., Troll V.R., Errington, M., Donaldson, C.H. and Emeleus, C.H.; (2006) A reappraisal of felsites, breccias, and volcano-tectonics within the Southern Mountains Zone, Isle of Rum, Scotland. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group Meeting 2006, Leeds, U.K, Leeds, U.K , 07-JAN-06 - 08-JAN-06.
Byrne, P.K., Holohan, E.P. and Troll V.R. ; (2005) The influence of regional tectonic stresses on magma chamber geometries: an experimental approach. [Poster Presentation (Refereed)], Volcanic and Magmatic Studies Group Meeting 2005, Milton Keynes, U.K, Milton Keynes, U.K , 04-JAN-05 - 06-JAN-05.
Holohan E.P., Baxter, A. Troll V. R., and Van Wyk de Vries B.; (2005) An analogue study of the role of competency contrasts in the initiation of debris avalanches: preliminary results. [Poster Presentation], Irish Geological Research Meeting 2005 (Irish Journal of Earth Sciences, 2005, 23: 133), Dublin, Ireland , 12-FEB-05 - 13-FEB-05.
Soden A., Holohan E.P., Troll V.R. and Walter T.R ; (2004) Intruding magma into brittle crust: preliminary experimental results. [Poster Presentation], Irish Geological Research Meeting 2004, Galway, Ireland , 21-FEB-04 - 22-NOV-09.
Holohan E.P., Troll V.R., and Walter T.R.; (2004) The influence of regional tectonics on caldera development. [Oral Presentation], Irish Geological Research Meeting 2004 (Irish Journal of Earth Sciences, 2005, 22: 63), Galway, Ireland , 21-FEB-04 - 22-NOV-09.
Holohan E., McDonnell S., Troll V.R., Walter T.R.., Münn S.; (2003) Linking caldera morphologies with tectonic stress regimes: experimental results. [Poster Presentation], Irish Geological Research Meeting 2003 (Irish Journal of Earth Sciences, 21: 150), Belfast, Ireland , 22-FEB-03 - 22-FEB-03.
 

Employment

Employer: Department of Geology, Trinity College, Dublin
Position: Demonstrator in geology practical classes and field courses. Exam invigilator.
Employer: Department of Geology, Trinity College, Dublin
Position: Part-time lecturer and demonstrator in geology practical classes and field courses
Employer: Department of Geology, Trinity College, Dublin
Position: Broad Curriculum Postgraduate Teaching Fellow
Employer: Department of Geology, Trinity College, Dublin
Position: Broad Curriculum Postgraduate Teaching Fellow
Employer: School of Geological Sciences, University College Dublin
Position: Assistant Lecturer in Structural Geology
Employer: School of Geological Sciences, University College Dublin
Position: Post-Doctoral Research Fellow
Employer: Helmholtz Centre Potsdam - German Research Centre for Geosciences (GFZ)
Position: Research Scientist
Employer: UCD School of Earth Sciences
Position: College Lecturer in Structural Geology and Tectonics

Education

Year 2008 Institution:
Qualification: PhD Subject: PhD in Geology
Year 2002 Institution: Trinity College Dublin
Qualification: BA (Mod) Subject:
Year 2004 Institution: Trinity College Dublin
Qualification: Dip Stat Subject: Postgraduate Diploma in Statistics

Languages

German:

Consultancy

Client: Carraig Conservation International Ltd., Dame St. Dublin 2, Ireland

Outreach Activities

A photo-reportage of sinkholes and other phenomena at the Dead Sea shore, published by the German national newspaper, Die Zeit (in German) - http://www.zeit.de/wissen/2015-07/totes-meer-erdloecher-fs.

Journals Edited

Journal Of Volcanology And Geothermal Research: Reviewer.
Nature Geoscience: Reviewer.
Journal Of Structural Geology: Reviewer.
Geology: Reviewer.
Earth And Planetary Science Letters: Reviewer.
Bulletin Of Volcanology : Reviewer.

Other Activities

Invited Talks or Seminars

  • May 2009 - "Discrete Element Method (DEM) Models of Caldera Subsidence" - Structural and Petrological AdvanceS in Earth-sciences (SPASE) Workshop, University of Uppsala, Sweden.
  • Mar. 2009 - " Sandbox Subsidence and Super-volcanoes" - Free University of Amsterdam, Netherlands.
  • Mar. 2009 - "Sandbox Subsidence, Super-volcanoes and Scotland" - University of Glasgow, U.K.
  • Feb. 2009 -" Structural & Hydrothermal Evolution of Calderas: Insights from Sandbox Experiments and Stable Isotopes" - Trinity College Dublin, Ireland (with E. Donoghue).
  • Feb. 2005 - "Structural and Sedimentary Processes at Caldera volcanoes" - University College Cork, Ireland.

Publications

Books

Troll V.R., Nicoll, G.R., Emeleus, C.H., and Holohan E.P.; (2007) Geological Walks on the Isle of Rum, NW Scotland: Inside an Ancient Volcano. Dublin: Department of Geology, Trinity College Dublin. [Details]

Book Chapters

Galland O., Holohan E.P., van Wyk de Vries B., & Burchardt S. (2016) 'Laboratory modelling of volcano plumbing systems: a review' In: Breitkreutz C. & Rocchi S (eds). The Physical Geology of Shallow Level Magmatic Systems: Dykes, Sills and Laccoliths. Berlin Heidelberg: Springer Verlag. Available Online [DOI] [Details]
Byrne P.K., Holohan E.P., Kervyn M., Van Wyk de Vries B., Troll V.R (2015) 'Analogue modelling of volcano flank terrace formation on Mars' In: Platz, T., Massironi, M., Byrne, P. K. & Hiesinger, H (eds). Volcanism and Tectonism Across the Inner Solar System. London: Geological Society Special Publication. Available Online [DOI] [Details]
Holohan E.P., Troll V.R., and Emeleus, C.H. ; (2009) 'Days 7,8,9 - The Southern Mountains Zone' In: Emeleus, C.H. and Troll V.R (eds). A geological excursion guide to Rum: the Paleocene igneous rocks of the Isle of Rum, Inner Hebrides. Edinburgh: Edinburgh Geological Society & NMSE - Publishing Ltd. , pp.97-140 [Details]
Stevenson, C.T.E., O'Driscoll, B., Holohan, E.P., Couchman, R., Reavy, R.J. and Andrews, G.D.M; (2008) 'The structure, fabrics and AMS of the Slieve Gullion ring-complex, N. Ireland: testing the ring emplacement model' In: Thomson K. & Petford N (eds). The Structure and Emplacement of High-Level Magmatic Systems: Geological Society of London Special Publication No. 302. London: Geological Society, London, p159-184. , pp.159-184 Available Online [DOI] [Details]
 

Peer Reviewed Journals

Holohan, E.P., Sudhaus, H., Walter, T.R., Schöpfer, M.P.J., & Walsh, J.J. (2017) 'Effects of Host-rock Fracturing on Elastic-deformation Source Models of Volcano Deflation'. Scientific Reports, 7 (1):10970. Available Online [DOI] [Details]
D. Al-Halbouni, E.P. Holohan, L. Saberi, H. Alrshdan, A. Sawarieh, D. Closson, T.R. Walter, T. Dahm (2017) 'Sinkholes, subsidence and subrosion on the eastern shore of the Dead Sea as revealed by a close-range photogrammetric survey'. Geomorphology, 285 :305-324. Available Online [DOI] [Details]
Kottmeier C., Agnon, A., Al-Halbouni, D... Holohan E.P. et al., (2016) 'New perspectives on interdisciplinary earth science at the Dead Sea: The DESERVE project'. Science of the Total Environment, 544 :1045-1058. Available Online [DOI] [Details]
Gudmundsson M.T., Jónsdóttir K., Hooper A., Holohan E.P., et al., (2016) 'Gradual caldera collapse at Bárdarbunga volcano, Iceland, regulated by lateral magma outflow'. Science AAAS, 353 (6296):292-292. Available Online [DOI] [Details]
Musiol, S., Holohan E.P., Cailleau B., Platz T., Dumke A., Walter T.R., Williams D.A., and van Gasselt S. (2016) 'Lithospheric flexure and gravity spreading of Olympus Mons volcano, Mars'. Journal of Geophysical Research, 121 (3):255-272. Available Online [DOI] [Details]
Holohan, E.P., Schoepfer, M.P.J. and Walsh, J.J. (2015) 'Stress evolution during caldera collapse'. Earth and Planetary Science Letters, 421 :139-151. Available Online [DOI] [Details]
Bathke H., Nikhoo M., Holohan E.P., Walter T.R, (2015) 'Insights into the 3D architecture of an active caldera ring-fault at Tendürek volcano through modeling of geodetic data'. Earth and Planetary Science Letters, 422 :157-168. Available Online [DOI] [Details]
Poppe S., Holohan E. P., Boone M., Pauwels E., Cnudde V., & Kervyn M. (2015) 'Sinkholes, pit-craters and small calderas: Analog models of depletion-induced collapse analysed by computerized X-ray tomography'. Geological Society of America Bulletin, 127 (1-2):281-296. Available Online [DOI] [Details]
Byrne P.K., Holohan E.P., Kervyn M., Van Wyk de Vries B., Murray J.B., & Troll V.R. (2013) 'A spreading-sagging continuum for the structure of large volcanoes'. Geology, 41 (3):339-342. Available Online [DOI] [Details]
Bathke H., Sudhaus H., Holohan E.P., Walter T.R., Shirzaei M (2013) 'An active ring fault detected at Tendürek volcano by using InSAR'. Journal of Geophysical Research-Solid Earth, 118 :4488-4502. Available Online [DOI] [Details]
Holohan, E.P, Walter, T.R., Schöpfer, M.P.J., Walsh, J.J., Van Wyk de Vries, B. & Troll, V.R. (2013) 'Origins of oblique-slip faulting during caldera subsidence'. Journal of Geophysical Research-Solid Earth, 118 :1-17. Available Online [DOI] [Details]
Shirzaei, M., Walter, T.R., Nankali, H.R. and Holohan, E.P. (2011) 'Gravity-driven deformation of Damavand volcano, Iran, detected through InSAR time series'. Geology, 39 (3):251-254. Available Online [DOI] [Details]
Holohan, E.P., Schöpfer, M.P.J. and Walsh, J.J. ; (2011) 'Mechanical and geometric controls on the structural evolution of pit crater and caldera subsidence'. Journal of Geophysical Research-Solid Earth, 116: B07202 . Available Online [DOI] [Details]
Brown, D.J., Holohan E.P., and Bell, B.R. (2009) 'Sedimentary and volcano-tectonic processes in the British Palaeogene Igneous Province: A review'. Geological Magazine, 146 (3):326-352. Available Online [DOI] [Details]
Holohan E.P., Troll V.R., Errington M., Donaldson C.H., Nicoll G.R. & Emeleus, C.H. (2009) 'The Southern Mountains Zone, Isle of Rum, Scotland: volcano-sedimentary processes upon an uplifted and subsided magma chamber roof'. Geological Magazine, 146 (3):400-418. Available Online [DOI] [Details]
Nicoll, G., Holness, M., Troll, V., Donaldson, C., Holohan, E., Emeleus H., & Chew D. (2009) 'Early mafic magmatism and crustal anatexis on the Isle of Rum: evidence from the Am Màm intrusion breccia'. Geological Magazine, 146 (3):368-381. Available Online [DOI] [Details]
Mathieu L., Van Wyk de Vries, B., Holohan E.P., and Troll V.R.; (2008) 'Dykes, cups, saucers and sills: Analogue experiments on magma intrusion into brittle rocks'. Earth and Planetary Science Letters, 271 :1-13. Available Online [DOI] [Details]
Holohan E.P., Troll V.R., Van Wyk de Vries B, Walsh J.J., and Walter T.R. ; (2008) 'Unzipping Long Valley: an explanation for vent migration during an elliptical ring fracture eruption'. Geology, 36 (4):323-326. Available Online [DOI] [Details]
Holohan E.P., Van Wyk de Vries, B., and Troll V.R. ; (2008) 'Analogue models of caldera collapse in strike-slip tectonic regimes'. Bulletin of Volcanology, 70 :773-796. Available Online [DOI] [Details]
Holohan E.P., Troll V.R., Walter T.R., Münn S., McDonnell S. and Shipton Z. ; (2005) 'Influence of regional tectonics on collapse calderas: an experimental approach'. Journal of Volcanology and Geothermal Research, 144 :119-136. Available Online [DOI] [Details]
 

Conference Publications

Holohan E.P., Saberi L., Al-Halbouni D., Sawarieh A., Closson D., Alrshdan H., Walter T., and Dahm T. (2017) Spatio-temporal development of sinkholes on the eastern shore of the Dead Sea EGU General Assembly Vienna, Austria, , 23-APR-17 - 28-APR-17 Available Online [Details]
Gudmundsson M.T., Hooper A., Sigmundsson F., Sigmarsson O., Halldórsson S.A., Jónsdóttir K., Vogfjörd K.S., Holohan E.P. and the Bárdarbunga Team (2017) The Bárdarbunga 2014-2015 caldera collapse and its implications for evolution of central volcanoes EGU General Assembly Vienna, Austria, , 23-APR-17 - 28-APR-17 Available Online [Details]
Al-Halbouni D., Holohan E.P., Taheri A., and Dahm T. (2017) Distinct Element modeling of geophysical signatures during sinkhole collapse EGU General Assembly Vienna, Austria, , 23-APR-17 - 28-APR-17 Available Online [Details]
Kristin Jonsdottir, Magnus Tumi Gudmundsson, Sara Barsotti, Vala Hjorleifsdottir, Kristin S Vogfjord, Benedikt Ofeigsson, Martin Hensch, Matthew J Roberts, Gunnar Guðmundsson, Melissa A. Pfeffer, Baldur Bergsson, Freysteinn Sigmundsson, Stephanie Dumont, Michelle Parks, Andrew J Hooper, Hildur María Friðriksdóttir, Salóme J. Bernhardsdóttir, Eoghan P Holohan, Saemundur A Halldorsson, Thordis Hognadottir, Pall Einarsson, Olgeir Sigmarsson, Alexander H. Jarosch, Kristjan Jonasson, Bjorn Oddsson, Eyjólfur Magnússon, Sigrun Hreinsdottir, Marco Bagnardi, Finnur Pálsson, Simone Cesca, Bergur H. Bergsson (2016) Bárðarbunga volcano - what next? Volcano monitoring following the flood basalt eruption and caldera collapse in 2014-2015 [2016 V53C-3124] American Geophysical Union San Francisco, USA, Available Online [Details]
Magnus Tumi Gudmundsson, Andrew J Hooper, Freysteinn Sigmundsson, Olgeir Sigmarsson, Saemundur A Halldorsson, Kristin Jonsdottir, Kristin S Vogfjord, Eoghan P Holohan, Benedikt Ofeigsson, Martin Hensch, Gunnar Guðmundsson, Pall Einarsson, Michelle Parks, Thordis Hognadottir, Alexander H. Jarosch, Kristjan Jonasson, Eyjólfur Magnússon, Sigrun Hreinsdottir, Marco Bagnardi, Finnur Pálsson, Simone Cesca, Thomas R Walter, Torsten Dahm, Sara Barsotti, Vala Hjorleifsdottir, Melissa A Pfeffer, Tobias Dürig. (2016) The Magma Reservoir Under Bárdarbunga, Constraints from 2014-2015 Caldera Collapse [2016 V44A-03] American Geophysical Union San Francisco, USA, Available Online [Details]
Andrew J Hooper, Elias Rafn Heimisson, Matthew Gaddes,Marco Bagnardi, Freysteinn Sigmundsson, Karsten Spaans, Michelle Parks, Magnus Tumi Gudmundsson, Susanna K Ebmeier, Eoghan P Holohan, Tim J Wright, Kristin Jonsdottir, Sigrun Hreinsdottir, Stephanie Dumont, Benedikt Ofeigsson, Kristin S Vogfjord (2016) Towards forecasting volcanic eruptions on a global scale [2016 U43A-02] American Geophysical Union San Francisco, USA, Available Online [Details]
Dahm T., Hainzl S., Heimann S., Cesca S., Hensch M., Rivalta E., and Holohan E.P. (2016) The collapse mechanics at the Bardabunga caldera during the 2014/2015 volcanic eruption [EGU2016-8962] EGU General Assembly Vienna, Austria, , 18-APR-16 - 22-APR-16 Available Online [Details]
Al-Halbouni D., Holohan E.P., Walter T., Alrshdan H., Sawarieh A. and Dahm T. (2016) Evidence of spring formation and subrosion-induced sinkhole development at Ghor Al-Haditha, Jordan, from repeated close-range photogrammetry. [EGU2016-254] EGU General Assembly Vienna, Austria, , 18-APR-16 - 22-APR-16 Available Online [Details]
Jónsdóttir K., Jónasson K., Guðmundsson M.T., Hensch M., Hooper A., Holohan E.P., et al. (2016) Can we see the distal dyke communicate with the caldera? Examples of temporal correlation analysis using seismicity from the Bárðarbunga volcano, Iceland. [EGU2016-17092] EGU General Assembly Vienna, Austria, , 18-APR-16 - 22-APR-16 Available Online [Details]
Gudmundsson M.T., Jonsdóttir K., Hooper A., Holohan E.P., Halldorsson S. & the Bardarbunga Team (2016) A multidisciplinary study of the 2014-2015 Bárðarbunga caldera collapse, Iceland [EGU2016-17005] EGU General Assembly Vienna, Austria, , 18-APR-16 - 22-APR-16 Available Online [Details]
Al-Halbouni D., Holohan E.P., and Dahm T. (2015) The role of lithological contrasts in the formation of sinkholes: a Distinct Element Method modelling perspective [EGU2015-5153] EGU General Assembly Vienna, Austria, , 13-APR-15 - 17-APR-15 Available Online [Details]
Al-Halbouni D., Holohan E.P., Walter T., Alrshdan H., Sawarieh A. and Dahm T. (2015) Land subsidence, structures and processes at the Dead Sea shoreline as revealed by a near-field photogrammetry survey at Ghor Haditha, Jordan [EGU2015-5106] EGU General Assembly Vienna, Austria, , 13-APR-15 - 17-APR-15 Available Online [Details]
Cesca S., Heimann S., Hensch M., Hjörleifsdóttir V., Holohan E.P, & Dahm T. (2015) Complex rupture processes at the Bárðarbunga caldera, Iceland [EGU2015-8883] EGU General Assembly Vienna, Austria, , 13-APR-15 - 17-APR-15 Available Online [Details]
Galland O., Holohan E.P., van Wyk de Vries B., & Burchardt S. (2015) Laboratory Modelling of Volcano Plumbing Systems: a review [EGU2015-14678] EGU General Assembly Vienna, Austria, , 13-APR-15 - 17-APR-15 Available Online [Details]
Kristin Jonsdottir, Kristjan Jonasson,Magnus Tumi Gudmundsson, Martin Hensch, Andrew J Hooper, Eoghan P Holohan, Sigmundsson, Saemundur A Halldorsson, Thordis Hognadottir, Eyjólfur Magnússon, Finnur Pálsson, Thomas R Walter, Benedikt Ofeigsson, Michelle Parks, Matthew J Roberts, Vala Hjorleifsdottir, Simone Cesca, Gunnar Guðmundsson, Sigrun Hreinsdottir, Alexander H. Jarosch, Stephanie Dumont, Hildur María Fridriksdóttir, Sara Barsotti, Pall Einarsson (2015) Communication between earthquake clusters separated by over 30 km supports simple volcano plumbing [2015 S51D-2717] American Geophysical Union San Francisco, USA, Available Online [Details]
Holohan, E., Sudhaus, H., Schöpfer, M., Walter, T. and Walsh, J. (2015) Effects of host-rock fracturing on deflation-related volcano deformation sources [EGU2015-9292] EGU General Assembly Vienna, Austria, , 13-APR-15 - 17-APR-15 , pp.EGU2015-9292 Available Online [Details]
Holohan E. P., Schöpfer M. P. J., & Walsh J. J. (2014) Stress evolution during caldera collapse: a Distinct Element Method perspective [EGU2013-2208] EGU General Assembly Available Online [Details]
Galland O., Holohan E.P. & Dumazer G. (2014) The Use of Scaling Theory in Geological Laboratory Models . In: Elger, K., Haug, Ø. T., Ritter, M eds. GeoMod 2014 , 31-AUG-14 - 05-SEP-14 , pp.439-442 Available Online [DOI] [Details]
Musiol S., Cailleau B., Holohan E.P., Walter T.R., Williams D.A., Dumke A., & van Gasselt S. (2014) Gravity-driven deformation of Olympus Mons volcano, Mars: plate flexure and volcanic spreading studied with finite element models [EGU2014-11746] EGU General Assembly Vienna, Austria, , 28-APR-14 - 02-MAY-14 Available Online [Details]
Bathke H., Nikkhoo M., Holohan E.P., & Walter T.R. (2014) Oblique-slip faulting at Tendürek volcano observed by using InSAR [EGU2014-12934] EGU General Assembly Vienna, Austria, , 28-APR-14 - 02-MAY-14 Available Online [Details]
Bathke H., Holohan E.P., & Walter T.R. (2014) Displacement partitioning and ring fault segmentation at Tendürek volcano observed by using high resolution InSAR [EGU2014-16834] EGU General Assembly , 28-APR-14 - 02-MAY-14 Available Online [Details]
Holohan E.P., Poppe S., Delcamp A., Kervyn M., Byrne P.K, van Wyk de Vries B., & Walter T.R. (2014) The sagging-spreading transition during volcano growth: an experimental perspective [EGU2014-6646] EGU General Assembly Vienna, Austria, , 28-APR-14 - 02-MAY-14 Available Online [Details]
Musiol S., Cailleau B., Holohan E.P., Platz T., Dumke A., Walter T.R., Williams D.A., & van Gasselt S. (2014) Making a Large Volcano on Mars: Edifice State of Stress of Olympus Mons and Implications for Its Evolution [2014/FM/V54A-01] American Geophysical Union , 15-DEC-14 - 19-DEC-14 Available Online [Details]
Poppe S., Holohan E.P., Pauwels E., Cnudde V., & Kervyn M. (2014) Overburden bulking in analogue models of depletion-induced collapse quantified with computed X-ray micro-tomography . In: Elger, K., Haug, Ø. T., Ritter, M eds. GeoMod 2014 Potsdam, Germany, , 31-AUG-14 - 05-SEP-14 , pp.217-220 Available Online [DOI] [Details]
Musiol S., Cailleau B., Holohan E.P., Platz T., Dumke A., Walter T.R., Williams D.A., & van Gasselt S. (2014) The formation of terrace-bounding faults on Olympus Mons volcano, Mars . In: Elger, K., Haug, Ø. T., Ritter, M. (Eds.) eds. GeoMod 2014 Potsdam, Germany, , 31-AUG-14 - 05-SEP-14 , pp.211-213 Available Online [DOI] [Details]
Holohan E.P., Sudhaus, H., Schöpfer M.P.J., Walter T.R., and Walsh J.J. (2014) Use of the Distinct Element Method in Volcano-tectonic Modeling . In: Elger, K., Haug, Ø. T., Ritter, M. (Eds.) eds. GeoMod 2014 Potsdam, Germany, , 31-AUG-14 - 05-SEP-14 , pp.191-195 Available Online [DOI] [Details]
Holohan E. P., Walter T. R., Schöpfer M. P. J., Walsh J. J., Orr T., & Poland, M. (2014) Linking Camera Images, Geodetic Data, & Numerical Models: a Test-case in the March 2011 Collapse of Pu'u O'o Pit-crater, Hawai'i [2013 V53F-05] American Geophysical Union Available Online [Details]
Holohan E.P., Walter T.R., Schöpfer M.P.J., Sudhaus, H., and Walsh J.J. (2014) Effects of Sub-Surface Fracturing on Surface Displacement and the Interpretation of Volcano Deformation Sources [2013 V44C-05] American Geophysical Union San Francisco, USA, Available Online [Details]
Holohan E. P., Poppe S., Kervyn M., Delcamp A., Byrne P.K, & van Wyk de Vries B. (2014) An experimental study of the volcano-sagging to volcano-spreading transition [EGU2013-1903] EGU General Assembly Available Online [Details]
Poppe S., Holohan E. P., Boone M., Pauwels E., Cnudde V., & Kervyn M. (2014) Characterizing analogue caldera collapse with computerized X-ray micro-tomography [EGU2013-7104] EGU General Assembly Vienna, Austria, Available Online [Details]
Holohan E. P., Walter T. R. , Schöpfer M. P. J., Walsh J. J., Orr T., and Poland, M. (2012) The 2011 collapse of Puu Oo pit crater, Hawaii: insights from digital image correlation and Discrete Element Method models [EGU2012-9311] European Geosciences Union (EGU) General Assembly Vienna, Austria, , 22-APR-12 - 27-APR-12 , pp.EGU2012-9311 Available Online [Details]
Holohan E. P., Sudhaus H., Walter T. R., Schöpfer M. P. J., and Walsh J. J. (2012) Interpreting sub-surface deformation sources at volcanoes: Insights from DEM models [EGU2012-9404] European Geosciences Union (EGU) General Assembly Vienna, Austria, , 22-APR-12 - 27-APR-12 , pp.EGU2012-9404 Available Online [Details]
Holohan, E. P., Walter, T.R., Walsh, J.J., van Wyk de Vries, B., Schöpfer, M.P.J. and Troll, V.R. (2011) Origin and Significance of Oblique-slip Faulting during Caldera Collapse [EGU2011-11641] European Geosciences Union (EGU) General Assembly , 03-APR-11 - 08-APR-11 , pp.EGU2011-11641 Available Online [Details]
Shirzaei, M., Walter, T.R., Nankali, H.R. and Holohan, E.P. (2011) Gravity-driven deformation of Damavand volcano detected through InSAR time series [EGU2011-11713] European Geosciences Union (EGU) General Assembly Vienna, Austria, , 03-APR-11 - 08-APR-11 , pp.EGU2011-11713 Available Online [Details]
Byrne, P.K., Holohan, E.P., Kervyn, M., van Wyk de Vries, B., Murray, J.B. and Troll, V.R. (2011) Sagging-Spreading Continuum for the Structure of Large Volcanoes on Terrestrial Planets [EGU2011-658] European Geosciences Union (EGU) General Assembly , 03-APR-11 - 08-APR-11 , pp.EGU2011-658 Available Online [Details]
Byrne, P.K., Holohan, E.P., Kervyn, M., van Wyk de Vries, B., Murray, J.B. and Troll, V.R.; (2011) A Sagging-Spreading Continuum for the Structure of Large Volcanoes on Terrestrial Planets 42nd Lunar and Planetary Science Conference Texas, USA. Programme and Abstracts, , pp.2791 Available Online [Details]
Holohan E.P., Walter T.R., Schöpfer M.P.J., Sudhaus H., Walsh J.J.; (2011) Beyond elasticity: the continuous to discontinuous deformation transition and its importance for InSAR data modeling in volcanology Fringe 2011 - 8th International Workshop on Advances in the Science and Applications of SAR Interferometry Frascati, Italy, , 19-SEP-11 - 23-SEP-11 , pp.265-265 Available Online [Details]
Holohan, E.P., Schöpfer, M.P.J., and Walsh, J.J.; (2010) Bonded 2D-DEM Models of Pit Craters and Collapse Calderas [EGU2010-6914] European Geosciences Union (EGU) General Assembly Vienna, Austria, , pp.EGU2010-6914 Available Online [Details]
Holohan E.P., Walter T.R., van Wyk de Vries B., Schöpfer M.P.J., Troll V.R., and Walsh J.J.; (2010) Accommodation of Horizontal Displacement at Collapse Calderas Collapse Caldera Workshop 2010 La Reunion Island, , 03-OCT-10 - 09-OCT-10 [Details]
Holohan E.P., Schöpfer M.P.J., and Walsh J.J.; (2010) The Effects of Rock Strength and Young's Modulus on the Structure of Pit Craters and Collapse Calderas Collapse Caldera Workshop 2010 La Reunion, , 03-OCT-10 - 09-OCT-10 [Details]
Holohan, E.P., van Wyk de Vries, B., Schöpfer, M.P.J., Troll, V.R., and Walsh, J.J.; (2010) Insights into volcano-related subsidence structures on Mars from experiments and 3D strain theory [EGU2010-6892] EGU General Assembly 2010, Geophysical Research Abstracts Vol. 12, Available Online [Details]
Byrne, P.K., Van Wyk de Vries, B., Holohan, E.P., Murray, J.B. and Troll, V.; (2009) 'Olympus Mons shaped by lithospheric flexure' [V23E-2161] AGU Fall Meeting 2009, Eos Transactions , 13-DEC-09 - 18-DEC-09 , pp.V23E-2161 Available Online [Details]
Holohan, E.P., Schöpfer, M.P.J., and Walsh, J.J.; (2009) 'Pit Craters and Collapse Calderas: Structural Influences of Initial Mechanical and Geometric Properties as revealed by 2D Distinct Element Method (DEM) Models' [ V23E-2158] AGU Fall Meeting 2009, Eos Transactions , 14-DEC-09 - 18-DEC-09 , pp.V23E-2158 Available Online [Details]
Holohan E.P., Troll V.R., Van Wyk de Vries B, Walsh J.J., and. Walter T.R. ; (2008) Unzipping Long Valley: an explanation for vent migration during an elliptical ring fracture eruption [MPV06804L] 33rd International Geological Congress Oslo, Norway, , pp.MPV 06804L Available Online [Details]
Holohan, E.P., Troll, V.R., van Wyk de Vries, B., Walsh, J.J. and Walter, T.R. ; (2008) Unzipping Long Valley: an explanation for vent migration patterns during an elliptical ring fracture eruption International Geological Congress Oslo, Norway, , pp.MPV 06804L [Details]
Schöpfer M.P.J., Childs C., Walsh J.J., Abe S., Arslan A., and Holohan E.P. ; (2008) Distinct Element Method (DEM) Modelling of Laboratory to Outcrop-Scale Fracturing of Natural Rocks [Paper No. 129-4] Joint Meeting of The Geological Society of America Houston, U.S.A, , 05-OCT-08 - 09-OCT-08 , pp.105-106 Available Online [Details]
Holohan E.P., Van Wyk de Vries B., Troll V.R., Walter T.R., and Walsh J.J.; (2008) Influences of Magma Chamber Ellipticity on Ring Fracturing and Eruption at Collapse Calderas Collapse Calderas Workshop 2008 Querétaro, Mexico. IOP Conference Series: Earth and Environmental Science 3, , 19-OCT-08 - 26-OCT-08 , pp.012018 Available Online [Details]
Holohan, E., Troll, V., Acocella, V. and Walter, T.; (2006) A Reappraisal of the Caldera Structural Continuum: Insights into super-volcano formation from field studies and analogue experiments. [V33C-0685] American Geophysical Union (AGU) meeting, San Fransisco, USA [Details]
Holohan E.P., Martin N., Troll V.R. and van Wyk de Vries B. ; (2006) Caldera formation in pull-apart systems: Preliminary experimental results.[EGU06-A-06724] European Geosciences Union meeting Vienna, Austria [Details]
Holohan, E., Troll, V.R., Donaldson, C.H., Errington, M. and Emeleus, C.H.; (2006) Pre-Caldera uplift recorded in volcano-tectonics, breccias and ignimbrites of the Southern Mountains Zone, Isle of Rum, Scotland [EGU06-A-06657] European Geosciences Union meeting Vienna, Austria , pp.06657 [Details]
Holohan E.P., Troll V.R., and Van Wyk de Vries, B. ; (2005) The influence of strike-slip tectonics on caldera formation: an experimental approach [ EGU05-A-00491] European Geosciences Union General Assembly, Vienna, Austria [Details]
Troll V.R., Walter T.R., Holohan E., McDonnell S., Münn S.; (2003) Influence of regional tectonic stresses on caldera structures: an experimental approach  EGS-AGU-EUG Joint Assembly, 2003, Nice, France [Details]
                                                                                                                                       

Research

Research Interests

Eoghan's research interests include:

1) The mechanics and kinematics of structures that form during gravity-driven deformation, such as in sinkhole collapse, caldera subsidence, pit crater collapse, mining subsidence, and subsidence induced by hydrocarbon reservoir compaction.

2) The structural evolution of volcanoes and sub-volcanic intrusions.

3) The influence of regional tectonic regimes and associated structures on the development of volcanoes.

4) The structural, sedimentological, and volcanological evolution of the British and Irish Palaeogene Igneous Province.

Methods used to investigate these topics include geological mapping and field studies, satellite and drone-based Earth observation, scaled physical (analogue) experiments, and discrete element method (DEM) numerical models.

Eoghan also collaborates with other scientists in Austria, Britain, Belgium, France, Ireland, Germany, Norway, Sweden, and the USA.

Research Projects

Sponsor : University College Dublin (UCD)
Title : Land Subsidence Measurement and Simulation
Start Date / End Date : 01-JUL-17 / 30-JUN-20
   

Teaching

Teaching Philosophy

My teaching interests include structural geology, tectonics, volcanology, geological mapping and fieldwork skills, graphical presentation of scientific data and concepts, and science writing. Since third level education is above all about fostering independent minds, my teaching philosophy is to continually encourage students in critical evaluation, to challenge students to develop their own reasoned ideas, and to provide students with practical experiences in problem solving and learning.

I gained four and a half years of teaching experience at TCD Geology Department and at UCD School of Geological Sciences.  This tuition spanned first to fourth year science undergraduates in small-group tutorial to formal lecture formats (class sizes from 6-10 students to over 150 students). I have also supervised four undergraduate laboratory research projects, and have demonstrated on or led several undergraduate field courses both in Ireland and abroad.

Available upon request are: 1) a full list of courses/modules I have taught; 2) outlines of the course contents and aims; and 3) student-feedback questionaire data (for some courses).

         

Collaborators

Internal Collaborators

Dr Conrad Childs,  Fault Analysis Group, School of Earth Sciences, University College Dublin.

Prof. John J. Walsh, Fault Analysis Group, School of Earth Sciences, University College Dublin.

External Collaborators

Current:

Dr Steffi Burchardt, Uppsala University, Uppsala, Sweden

Dr Damien Closson, Royal Military Academy, Brussels, Belgium

Prof. Torsten Dahm, GeoForschungsZentrum (GFZ) Potsdam,  Potsdam, Germany.

Dr Olivier Galland, University of Oslo, Norway

Prof. Magnus Gudmundsson, University of Iceland, Reykjavik, Iceland

Dr. Matthieu Kervyn, Free University of Brussels (VUB), Brussels, Belgium

Mr. Sam Poppe, Free University of Brussels (VUB), Brussels, Belgium

Dr Ali Sawarieh, Ministry of Energy and Mineral Resources, Amman, Jordan

Dr Martin P. Schoepfer, University of Vienna, Vienna, Austria

Dr Henriette Sudhaus, University of Kiel, Kiel, Germany

Prof. Benjamin van Wyk de Vries,  Laboratoire Magmas et Volcans, Blaise-Pascal University, Clermont-Ferrand, France.

Dr Thomas R. Walter, GeoForschungsZentrum (GFZ) Potsdam,  Potsdam, Germany.



Past:

Dr David Brown, Department of Geographical and Earth Sciences, University of Glasgow, U.K.

Dr Colin Donaldson, School of Geosciences, University of St. Andrews, U.K.

Prof. Henry Emeleus, Department of Earth Sciences, University of Durham, U.K.

Dr Lucie Mathieu, formerly Department of Geology, Trinity College Dublin, Ireland.

Dr Graeme Nicoll, formerly Department of Geology, Trinity College Dublin, Ireland.

Dr Brian O'Driscoll, Department of Earth Sciences and Geography, Keele University, U.K.

Dr John Reavy, Department of Geology, University College Cork, Ireland.

Dr Carl Stevenson, School of Geography, Earth and Environmental Sciences, University of Birmingham, U.K.

Prof. Valentin Troll,  Department of Earth Sciences, Uppsala University, Sweden.