YouWol Geoscience Services
Nuclear waste disposal

Case study: Onkalo, Finland


  • Maerten, L., Soliva, R., Maerten, F. , Aaltonen, I., Wilkström, L. and Mattila, J., 2009, Fault Reactivation and Fault Properties - 3D Geomechanical Modeling Approach and Application to Nuclear Waste Disposal2nd International Conference on Fault and Top Seals – From Pore to Basin Scale Montpellier, France, 21-24.

  • Soliva, R., Maerten, F., Maerten, L. and Mattila, J., 2019, Fault slip envelope: a new parametric investigation tool for fault slip based on geomechanics and 3-D fault geometry. Solid Earth, 10 (4), 1141-1154.​


  • Client: Posiva Oy

  • Location: Olkiluoto Island, Finland

  • Main goal: Model fault reactivation over time in a buried nuclear waste disposal area

  • Geology: Fractured gneisses

  • Tectonic: Glacial cycle



  1. Data analysis and interpretation

  2.  3D model building

    1. Multi-parametric models (Arch)

  3. Fault reactivation risk over time (Arch)

  4. 3D stress models over time (Arch)


Other applications using similar methodology

This workflow for modeling fault reactivation can also be applied to:

  • Oil and gas production

  • Earthquake study

  • Geothermal energy

  • CO2/gas storage

  • Mining

Main outcomes