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Szabolcs Kósik

Szabolcs Kósik

Phone:+64 (06) 356 9099 x85896
Mobile:+64 (021) 298 7413

Tertiary education

  • 2005-10
  • (MSc) Geology - Eötvös Loránd University, Budapest, Hungary
  • 2001-06
  • (MSc) Geography - Eötvös Loránd University, Budapest, Hungary

Masters Research

Szabolcs Kosik
Coring the lake sediments of St. Ana crater from the icebound lake, Ciomadul (Csomad) volcano, Romania 15.03.2010.

2010: ”Investigation of silicate-melt inclusions in the explosive products of Ciomadul (Csomád) volcano, Romania” Supervisor: Szabolcs Harangi

2006: ”Investigations of volcanoclastic rocks in Visegrád Mountains, Hungary” Supervisor: David Karatson

PhD Research


“Parasitic versus individual vents in the Central North Island: Small-volume volcanism associated with polygenetic volcanoes”

Research objectives

In order to understand the hazard associated with small-volume eruptions/volcanoes of the Taupo Volcanic Zone, the research will be carried out at two different scales. Data from the entire TVZ can be acquired by Geographic Information System (GIS)-based research to extract spatial and temporal data, morphometric analyses and terrain modelling can be carried out using existing Digital Elevation Models (DEMs). The aim of this research is to understand the origin and the behaviour of such small-volume volcanism along with its possible hazards through field mapping and GIS analyses. Objectives within this research;

  1. Elucidate the volcanic evolution of the parasitic Ohakune “tuff ring”-scoria cone complex and describe its basaltic explosive activity.
  2. Understand the evolution of the silicic fissure eruption of Puketerata (Maroa Volcanic Centre) and its explosive activity, as well as determine the controlling factors creating maars and lava domes along the fissure.
  3. Elucidate the processes of a silicic eruption initiated in a subaqueous environment (Motuoapa, Lake Taupo).
  4. Use interpretations of eruptive behaviours from example localities to define the hazard and risk of both silicic and mafic small-volume eruptions in the TVZ
  5. Define the controlling conditions of the syn-volcanic and the post-volcanic shape of the lava domes within the Taupo Volcanic Zone by GIS based morphometrical analyses in context of global perspectives.
  6. Develop methods to calculate eruptive volumes of lava domes
  7. Find correlations between the age of a lava domes and their morphometric features within the Taupo Volcanic Zone
  8. Understand the relationship between the eruptions of small-volume volcanoes and the neighbouring central volcanoes.


  • Detailed field work to understand stratigraphic, sedimentological and eruptive properties of the example locations
  • Defining the grain size distribution and particle componentry of the collected samples, petrographic and vesicularity analyses
  • Geochemical analyses for defining the main geochemical features of the rocks of example localities
  • GIS based morphometrical investigations of the lava domes, statistical analyses of the spatial, temporal and volumetric features of the small-volume volcanoes

Research Interests

Szabolcs Kosik
Basal contact of Rangitukua lava dome, Taupo Volcanic Zone, New Zealand
  • Silicic monogenetic volcanism and geomorphology of evolved landforms

  • GIS based morphometrical analyses and classification of lava domes

  • Physical volcanology and eruptive and erosional history reconstruction

  • Volcano monitoring
  • Publications

    • Journal Articles

    • Karátson, D. Gertisser, R., Telbisz, T., Vereb, V. Quidelleur, Q., Druitt, T. Nomikou, P. Kósik, S. (2018). Towards reconstruction of the lost Late Bronze Age intra-caldera island of Santorini, Greece. Scientific Reports 8: 7026.
    • Kósik, S., Németh, K., Lexa, J., Procter, J.N.(2017) Understanding the evolution of a small-volume silicic fissure eruption: Puketerata Volcanic Complex, Taupo Volcanic Zone, New Zealand. Journal of Volcanology and Geothermal Research, in press, https://doi.org/ 10.1016/j.j volgeores.2017.12.008
    • Kósik, S., Németh, K., Procter, J.N., Zellmer, G.F.(2017) Maar-diatreme volcanism relating to the pyroclastic sequence of a newly discovered high-alumina basalt in the Maroa Volcanic Centre, Taupo Volcanic Zone, New Zealand. Journal of Volcanology and Geothermal Research 341:363-370.
    • Kósik, S., Németh, K., Kereszturi, G.,Procter, J.N., Zellmer, G.F., Geshi, N.(2016) Phreatomagmatic and water-influenced Strombolian eruptions of a small-volume parasitic cone complex on the southern ringplain of Mt. Ruapehu, New Zealand: Facies architecture and eruption mechanisms of the Ohakune Volcanic Complex controlled by an unstable fissure eruption. Journal of Volcanology and Geothermal Research 327:99-115
    • Kósik, S. (2015) C. Oppenheimer: Eruptions that shook the world. Cambridge University Press, New York, 2011, hardback, p. XVI + 392, ISBN: 978-0-521-64112-8, Bulletin of Volcanology 77:101.
    • Kósik, S. (2014) Thor Thordarson, Ármann Höskuldsson: Iceland Dunedin Academic Press, 2nd edition, 2014. Classic Geology in Europe Series. Paperback, 192 p. ISBN: 978-1-780-46-021-5. Bulletin of Volcanology 76:878.
    • Karátson, D., Telbisz, T., Harangi, S., Magyari, E., Dunkl, I., Kiss, B., Jánosi, C., Veres, D., Braun, M., Fodor, E., Biró, T., Kósik, S., von Eynatten, H., Lin, D. (2013). Morphometrical and geochronological constraints on the youngest eruptive activity in East-Central Europe at the Ciomadul (Csomád) lava dome complex, East Carpathians. Journal of Volcanology and Geothermal Research 255, 43-56.
    • Karátson, D., Oláh, I., Pécskay, Z., Márton, E., Harangi, S., Dulai, A., Zelenka, T., Kósik, S. (2007). Miocene volcanism in the Visegrád Mountains (Hungary): An integrated approach to regional volcanic stratigraphy. Geologica Carpathica 58(6), 541-563.
    • Books, Book Chapters

    • Kósik, S. and Karátson, D. (2014) A tűzhányótevékenység megfigyelése (vulkánmonitoring); vulkáni kockázatok kezelése (Volcano monitoring and volcanic risk assessement, in Hungarian). In Karátson, D. Vulkanológia II. ELTE Eötvös Kiadó, Budapest, 233-252.
    • Conference Abstracts

    • Kósik, S., Németh, K., Kereszturi, G., Procter, J.N., Lexa, J. (2016) Understanding the evolution and resulting hazard of a small-volume silicic fissure eruption: Puketerata Volcanic Complex, Taupo Volcanic Zone, New Zealand. IAVCEI 6th International Workshop on Collapse Calderas, Toya, Shikotsu and Kuttara calderas, Hokkaido, Japan
    • Kósik, S. and Németh, K.,(2016) The complexity of volcanic lithofacies of the Quaternary silicic Puketerata tuff ring-lava dome complex and its implication to define lithostratigraphic units associated with pre-Quaternary successions. IAVCEI 3rd International Workshop on Volcano Geology, Etna-Aeolian Islands ,Italy
    • Kósik, S., Németh, K., Procter, J.N., Kereszturi, G., Cronin, S.J. (2015) Detailed investigation of the activity and evolution of a basaltic parasitic centre of Ruapehu volcano: Ohakune volcano, New Zealand. GSNZ 2015, Wellington, New Zealand.
    • Kósik, S., Németh, K., Procter, J.N., Kereszturi, G., Cronin, S.J. (2015) DEM-based analysis of the morphometry of lava domes; a case study from the Taupo Volcanic Zone, New Zealand. IUGG 26, Prague, Czech Republic.
    • Kósik, S., Németh, K., Procter, J.N., Kereszturi, G., Cronin, S.J. (2015) Understanding the hazard of a frequently vent-shifting parasitic centre of the Ruapehu volcano, the Ohakune Complex, New Zealand. IUGG 26, Prague, Czech Republic.
    • Kósik, S., Németh, K., Procter, J.N., Cronin, S.J. (2014) Monogenetic and small composite volcanoes associated with the Taupo Volcanic Zone’s andesitic central volcanoes and silicic calderas. IAVCEI 5th International Workshop on Collapse Calderas, Taupo, New Zealand.
    • Kósik, S., Németh, K., Procter, J.N., Kereszturi, G., Cronin, S.J. (2014) Stratigraphy and sedimentology of a satellite vent operated by phreatomagmatic to lava fountaining eruptions: the Ohakune basaltic complex. GSNZ 2014, New Plymouth, New Zealand.
    • Kósik, S., Varley, N. Karátson, D.(2012) Caldera evolution of the Colima Volcanic Complex, México, based on 3D elevation models. IAVCEI 7th Cities of Volcanoes, Colima, Mexico.
    • Kósik, S., Nagy, T., Kaproncai, M., Karátson, D., Németh, K. (2011) Geomorphology and paleogeography of lava-capped buttes in the Tapolca Basin (Hungary) as reflected by 3D elevation models. IAVCEI 4th Maar Conference, Auckland, New Zealand.
    • Kósik, S., Karátson, D., Farkas, A. (2010) A hypothesis for Martian topography, tectonics and volcanism. 41st Lunar and Planetary Science Conference, 1248, The Woodlands, Texas, USA.
    • Telbisz, T., Móga, J., Kósik, S. (2009) A Pelsőci-fennsík digitális domborzatelemzése és töbörmorfometriai jellemzése. Karsztfejlődés 14, 121-137.
    • Kósik, S., Karátson, D., Székely, B. (2007) Volcaniclastic successions in the Visegrád Mountains, Hungary: stratigraphy and facies relationsips on 3D digital elevation models. EGU, Geophysical Research Abstracts, Vol. 9: 10251, Vienna, Austria.


    Szabolcs Kosik
    Breadcrust bombs at the crater rim of Fossa di Vulcano, Lipari Islands, Italy
    Szabolcs Kosik
    Upper section of Barranca de Montegrande (common path of lahars) with the edifice of Colima volcano, Volcan de Colima, Mexico
    Szabolcs Kosik
    Block-and-ash-flow deposits at Nevado de Colima, Mexico
    Szabolcs Kosik
    Panoramic view from Ngauruhoe volcano (Mt. Doom) to Tama Lakes and snowy Ruapehu volcano