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Thomas Louis Roger Dominique Theunissen's picture

Thomas Louis Roger Dominique Theunissen

Researcher, Post-doc
  • E-mailThomas.Theunissen@uib.no
  • Visitor Address
    Realfagbygget, Allégaten 41
    Room 
    2F18a - 2130B
  • Postal Address
    Postboks 7803
    5020 Bergen

I am Postdoc at UiB since 2013 in the Geodynamics and Basin studies group of the Department of Earth Science.

My research investigates links between seismicity and thermo-mechanical evolution of tectonic plate boundaries using geodynamics modelling.​ I specifically study the interactions between tectonic, surface processes (erosion and sedimentation) and mantle processes during rifted passive margin formation from continental rifting to steady-state mid-ocean spreading center and the dynamics of convergent margins. My current research at UiB is based on highly paralell 2-D and 3-D coupled geodynamic-surface processes finite-element numerical modelling at lithospheric scale.

The aim of my current research is to understand long-term geodynamic processes responsible for continental rifted margin formation and their feedbacks with surface processes (erosion, sedimentation).
In the framework of the COLORS project (Funded by TOTAL) I use data and observations from the North, Equatorial and South Atlantic to calibrate thermo-mechanical processes during rifting. I investigate crustal tectonic, sedimentary, heat transfer and upper-mantle processes during rift evolution to understand rheological and thermal controls on extensional rift and passive margin geometry and to understand feedbacks with surface processes.

I also work in seismology (absolute earthquake location, seismic tomography, focal mechanisms) on previous projects to understand the geodynamics of the transition from subduction to collision at the southernmost part of the Ryukyu subduction (PhD work) and the geodynamics of the Pyrenean mountain range SW of France (1st Postdoc).

Selected publications
  • Gutscher, Marc-André; Klingelhoefer, Frauke; Theunissen, Thomas; Spakman, Willem; Berthet, Theo; Wang, Tanking; Lee, Chao-Shing. 2016. Thermal modeling of the SW Ryukyu forearc (Taiwan) : Implications for the seismogenic zone and the age of the subducting Philippine Sea Plate (Huatung Basin). Tectonophysics. 692: 131-142. doi: 10.1016/j.tecto.2016.03.029
  • Theunissen, Thomas; Huismans, Ritske S. 2016. Frictional strain weakening in long-term numerical modeling during rifting.
  • Theunissen, Thomas; Huismans, Ritske S. 2016. Long-term coupling and feedbacks between surface processes and tectonics during rifting.
  • Theunissen, Thomas; Huismans, Ritske S. 2016. Long-term coupling and feedbacks between surface processes and tectonics during rifting.
  • Theunissen, Thomas; Huismans, Ritske S. 2015. Long-term coupling and feedbacks between surface processes and tectonics during rifting.
  • Theunissen, Thomas; Huismans, Ritske S. 2015. Coupling and feedback between tectonics and surface processes during rifted margin formation.
  • Bethoux, Nicole; Theunissen, Thomas; Beslier, Marie-Odile; Font, Yvonne; Thouvenot, Francois; Dessa, Jean-Xavier; Simon, Soazig; Courrioux, Gabriel; Guillen, Antonio. 2016. Earthquake relocation using a 3D a-priori geological velocity model from the western Alps to Corsica: Implication for seismic hazard. Tectonophysics. 670: 82-100. doi: 10.1016/j.tecto.2015.12.016
  • Theunissen, Thomas; Huismans, Ritske S. 2014. Coupling and feedback between tectonics and surface processes during rifted margin formation.
  • Show author(s) 2020. Earthquake statistics changed by typhoon-driven erosion. Scientific Reports.
  • Show author(s) 2019. Long‐Term Coupling and Feedback Between Tectonics and Surface Processes During Non‐Volcanic Rifted Margin Formation. Journal of Geophysical Research (JGR): Solid Earth. 12323-12347.
  • Show author(s) 2019. Detailed lithospheric structure of an arc-continent collision beneath Taiwan revealed by joint inversion of seismological and gravity data. Geophysical Journal International. 586-600.
  • Show author(s) 2017. Absolute earthquake locations using 3-D versus 1-D velocity models below a local seismic network: example from the Pyrenees. Geophysical Journal International. 1806-1828.
  • Show author(s) 2016. Thermal modeling of the SW Ryukyu forearc (Taiwan) : Implications for the seismogenic zone and the age of the subducting Philippine Sea Plate (Huatung Basin). Tectonophysics. 131-142.
  • Show author(s) 2016. Earthquake relocation using a 3D a-priori geological velocity model from the western Alps to Corsica: Implication for seismic hazard. Tectonophysics. 82-100.

More information in national current research information system (CRIStin)