Dr Mike Cassidy MSc, PhD

photo of Dr Mike Cassidy

School of Geography, Earth and Environmental Sciences
Associate Professor

Mike is a volcanologist and petrologist, his research focuses on the physio-chemical controls of volcanic explosivity, how to improve eruptive style forecasting and how we can best understand and minimise the impacts from large magnitude explosive eruptions.



  • 2012 – PhD, University of Southampton
  • 2008 – MSc Volcanology, University of Lancaster
  • 2006 – BSc Geology, University of Bristol


  • 2022 - Associate Professor of Volcanology, University of Birmingham (Visiting Fellow at University of Oxford) (Visiting fellow, University of Oxford & Research affiliate, Centre for the Study of Existential Risk, University of Cambridge)
  • 2017 – 2022: NERC Independent Research Fellow, University of Oxford
  • 2014 – 2016: Humboldt Research Fellow, Johannes Gutenberg University of Mainz, Germany
  • 2013 – 2014: Post-Doctoral Research Assistant, Plymouth University
  • 2012 – 2014: Post-Doctoral Research Assistant, University of Southampton
  • 2012: Research Assistant, University of Cambridge


LI: Igneous and Metamorphic Petrology

Postgraduate supervision

Those interested in postgraduate research are encouraged to contact Dr Cassidy via email to discuss potential projects and opportunities.

Other activities

  • 2021 – present: Editorial board for Scientists for Labour Lobbying for key scientific issues to the Labour Lords and MPs
  • 2020- present: NERC Peer review college member
  • 2018- 2020: Editorial Review Board Member for Frontiers in Earth Science (Petrology section)
  • 2021- present: Editorial board of Geology journal for ITB Bandung, Indonesia.
  • 2018 – 2020: Co-led the successful campaign for Oxford University to abolish their graduate application fee, removing a financial barrier to >35,000 applicants each year
  • 2018 – present: Set up MOU with ITB Bandung University for long term collaboration with Indonesian scientists
  • 2018 – 2021: Volcanic Magmatic Studies Group (VMSG) Elected Committee Member, Social media and ECR representative, founded the VMSG postdoctoral keynote award, and helped organise virtual VMSG conference 2021.
  • 2018 – 2020: Research staff representative at Earth Sciences Department Oxford


  • Cassidy, M., Mani L. ‘Huge volcanic eruptions: time to prepare’ Nature 608 (7923), 469-471 (2022)
  • A Voigt, M Cassidy, JM Castro, DM Pyle, TA Mather, C Helo, M Abdurrachman, IA Kurniawan “Experimental Investigation of Trachydacite Magma Storage prior to the 1257 Eruption of Mt Samalas” Journal of Petrology, (2022)
  • Cassidy, M., Iveson, A., Humphreys, M.C.S., Mather, T.A., Helo, C., Castro, J.M., Ruprecht, P, Pyle, D.M., EIMF “Experimentally-derived F, Cl and Br fluid/melt partitioning of intermediate to silicic melts in magmatic systems” American Mineralogist (2022)
  • Cutler, Watt, Cassidy, Madden-Nadeau, Engwell, Abdurrachman, Nurshal, Tappin, Carey, Novellino, Hayer, Hunt, Day, Grilli, Kurniawan ‘Downward-propagating eruption following vent unloading implies no direct magmatic trigger for the 2018 lateral collapse of Anak Krakatau’ Earth and Planetary Science Letters (2022)
  • ST Grilli, C Zhang, JT Kirby, AR Grilli, DR Tappin, SFL Watt, JE Hunt, A Novellino, S Engwell, MEM Nurshal, M Abdurrachman, M Cassidy, AL Madden-Nadeau, S Day (2021) “Modeling of the Dec. 22nd 2018 Anak Krakatau volcano lateral collapse and tsunami based on recent field surveys: Comparison with observed tsunami impact” Marine Geology 440
  • JE Hunt, DR Tappin, SFL Watt, S Susilohadi, A Novellino, SK Ebmeier, M Cassidy, SL Engwell, ST Grilli, M Hanif, WS Priyanto, MA Clare, M Abdurrachman, U Udrekh, (2021) “Submarine landslide megablocks show half of Anak Krakatau island failed on December 22nd, 2018” Nature Communications, 12, 1-5
  • Madden-Nadeau, A.L., Cassidy, M., Pyle, D.M., Mather, T.A., Watt, S.F.L., Engwell, S.L., Abdurrachman, M., Nurshal, MNM, Tappin, T., Ismail, T. 2021 ‘The magmatic and eruptive evolution of the 1883 caldera-forming eruption of Krakatau: Integrating field-to crystal-scale observation. Journal of Volcanology and Geothermal Research, 107176

View all publications in research portal