Dr Fabio Dioguardi

Dr Fabio Dioguardi


Location: BGS Edinburgh

Tel: 0131 6500 407

E-mail Dr Fabio Dioguardi

ORCID: 0000-0002-6205-6830

Boards and committees

  • – ongoing Reviewer for Powder Technology, Advances in Water Resources (Elsevier), Arabian Journal of Geosciences (Springer), Frontiers in Geosciences, Atmospheric Environment


  • 2015 – ongoing : BGS - Volcanology Team
  • 2013 –2014 : Politecnico di Bari, Bari (Italy) Research fellowship (1 year): "Numerical simulations for the design of an open-type wind-tunnel for the study of the re-entrainment and transport of solid particles of non-spherical shape by winds"
  • 2013 –2013 : University of Bari, Bari (Italy) Post-doc fellowship (1 year): "hazard assessment of pyroclastic flows at Campi Flegrei and Vesuvius, Italy"


  • 2009 –2012 : University of Bari, Bari (Italy) Ph.D. - Doctor Europaeus in Earth Sciences Dissertation: "Explosive volcanic eruptions: from fragmentation to eruption columns. An integrated modellistic-experimental approach"
  • 2005 –2008 : University of Bari, Bari (Italy) Master Degree in Geology
  • 2001 –2005 : University of Bari, Bari (Italy) Bachelor Degree in Geology

Current projects and collaboration

  • – ongoing Granular flow rheology; the key to understanding the exceptional mobility of pyroclastic density currents. NERC Standard Grant (Co-I)
  • – ongoing The development and implementation of an operational system for estimating the source conditions of explosive eruptions in quasi real-time. BGS Innovation Flexible Fund.
  • 2018 –2021 : EUROVOLC - European Network of Observatories and Research Infrastructures for Volcanology. H2020 Research Infrastructure Project 2018-2021.

Key papers

  • Dioguardi, F., Mele, D., and Dellino, P. (2018). A New One-Equation Model of Fluid Drag for Irregularly Shaped Particles Valid Over a Wide Range of Reynolds Number. J. Geophys. Res. Solid Earth, 123, 144-156, doi: 10.1002/2017JB014926.
  • Dioguardi, F., and Mele, D. (2018). PYFLOW_2.0: a computer program for calculating flow properties and impact parameters of past dilute pyroclastic density currents based on field data. Bull. Volcanol., 80, 28, doi: 10.1007/s00445-017-1191-z.
  • Dioguardi, F., Mele, D., Dellino, P., and Dürig, T. (2017): The terminal velocity of volcanic particles with shape obtained from 3D X-ray microtomography. J. Volcanol. Geotherm. Res., 329, 41-53, doi: 10.1016/j.jvolgeores.2016.11.013.
  • Dioguardi, F., and Mele D. (2015): A new shape dependent drag correlation formula for non-spherical rough particles. Experiments and results. Powder Technology, 277, 222-230, doi:10.1016/j.powtec.2015.02.062
  • Dellino, P., Dioguardi, F., Mele, D., D’Addabbo, M., Zimanowski, B., Büttner, R., Doronzo, D.M., Sonder, I., Sulpizio, R., Dürig, T., and La Volpe, L. (2014): Volcanic jets, plumes and collapsing fountains: evidence from large-scale experiments, with particular emphasis on the entrainment rate. Bulletin of Volcanology, 76, 834, doi:10.1007/s00445-014-0834-6
  • Dürig, T., Dioguardi, F., Büttner, R., Dellino, P., Mele, D., and Zimanowski, B. (2012): A new method for the determination of the specific kinetic energy (SKE) released to pyroclastic particles at magmatic fragmentation: theory and first experimental results. Bulletin of Volcanology, 74, 895-902, doi:10.1007/s00445-011-0574-9
  • Dellino, P., Dioguardi, F., Zimanowski, B., Büttner, R., Mele, D., La Volpe, L., Sulpizio, R., Doronzo, D. M., Sonder, I., Bonasia, R., Calvari, S., and Marotta, E. (2010): Conduit flow experiments help constraining the regime of explosive eruptions. Journal of Geophysical Research, 115, B04204, doi:10.1029/2009JB006781
  • Dellino, P., Büttner, R., Dioguardi, F., Doronzo, D. M., La Volpe, L., Mele, D., Sonder, I., Sulpizio, R., and Zimanowski, B. (2010): Experimental evidence links volcanic particle characteristics to pyroclastic flow hazard. Earth and Planetary Science Letters, 295, 314-320, doi:10.1016/j.epsl.2010.04.022

Professional association

  • 2015 – ongoing : IAVCEI: International Association of Volcanology and Chemistry of the Earth's Interior
  • 2012 – ongoing : AIV - Associazione Italiana di Vulcanologia (Italian Association of Volcanology)

Published outputs

  • Mele, D., and Dioguardi, F. (2018). The grain size dependency of vesicular particle shapes strongly affects the drag of particles. First results from microtomography investigations of Campi Flegrei fallout deposits. J. Volcanol. Geotherm. Res., 353, 18-24, doi: 10.1016/j.jvolgeores.2018.01.023.
  • Dioguardi, F., Dürig, T., Engwell, S. L., Gudmundsson, M. T., and Loughlin, S. C. (2016): Investigating Source Conditions and Controlling Parameters of Explosive Eruptions: Some Experimental-Observational-Modelling Case Studies, In: Updates in Volcanology – From Volcano Modelling to Volcano Geology, Karoly Nemeth (Ed.), doi:10.5772/63422.
  • Mele, D., Dioguardi, F., Dellino, P., Isaia, R., Sulpizio, R., and Braia, G. (2015): Hazard of pyroclastic density currents at the Campi Flegrei Caldera (Southern Italy) as deduced from the combined use of facies architecture, physical modeling and statistics of the impact parameters. J. Volcanol. Geotherm. Res., 299, 35-53, doi:10.1016/j.jvolgeores.2015.04.002.
  • Dioguardi, F., Dellino, P., and Mele, D. (2014): Integration of a new shape-dependent particle-fluid drag coefficient law in the multiphase Eulerian-Lagrangian code MFIX-DEM. Powder Technology, 260, 68-77, doi:10.1016/j.powtec.2014.03.071
  • Doronzo, D. M., Khalaf, E. A., Dellino, P., de Tullio, M. D., Dioguardi, F., Gurioli, L., Pascazio, G., and Sulpizio, R. (2014): On dust storms past a building in the suburbs of dry metropolis. Arab. J. Geosci., doi:10.1007/s12517-014-1730-2.
  • Dioguardi, F., and Dellino, P. (2014): PYFLOW: A computer code for the calculation of the impact parameters of Dilute Pyroclastic Density Currents (DPDC) based on field data. Computer and Geosciences, 66, 200-210, doi:10.1016/j.cageo.2014.01.013.
  • Dioguardi, F., Dellino, P., and de Lorenzo, S. (2013): Integration of large-scale experiments and numerical simulations for the calibration of friction laws in volcanic conduit flows. Journal of Volcanology and Geothermal Research, 250, 75-90, doi:10.1016/j.jvolgeores.2012.09.011

Research interests

  • Aerodynamics of volcanic ash and lapilli particles
  • Eruptive column physics
  • Explosive volcanic eruptions
  • Multiphase flows (modelling and experiments)
  • Pyroclastic flows physics and interpretation of their deposits
  • Textural analysis of volcanic ash and lapilli particles


  • Computational Fluid Dynamics: MFIX (Multiphase Flow with Interphase eXchange), Ansys Fluent, OpenFoam (basics)
  • Mesh generation for Computational Fluid Dynamics: Pointwise, Ansys Meshing
  • Programming languages: Fortran, Matlab, Python
  • Simulation post-processing software: Paraview, VisIt
  • Wolfram Mathematica


  • Interpretation of pyroclastic flows deposits
  • Numerical simulations of multiphase flows
  • Sedimentology of dilute pyroclastic density currents
  • Sediments characterization techniques (grainsize analysis via manual sieving and optical methods, BET analysis, Micro Tomography (basic knowledge), Image Particle Analysis (basic knowledge))
Research partners
  • Heriot-Watt University: Prof. Raffaella Ocone
  • INGV: Dr. Antonio Costa
  • University of Bari (Italy): Prof. Pierfrancesco Dellino, Prof. Roberto Sulpizio, Dr. Daniela Mele
  • University of Dundee: Prof. Alan Cuthbertson
  • University of Edinburgh: Prof. Eliza Caldera, Prof. Jin sun
  • University of Otago (New Zealand): Dr. Tobias Dürig