Jeoung Seok Yoon (Prof. Dr.) Founder & Managing Director
Jeoung Seok leads DynaFrax's scientific programming and technology development, as well as strategic planning. Jeoung Seok received his Ph.D. in Geosystem Engineering from Seoul National University (Korea) in 2007. Jeoung Seok's Ph.D. work was awarded The Rocha Runner Up Certificate by the International Rock Mechanics Society (ISRM) in 2010. Jeoung Seok worked at the Helmholtz Centre Potsdam German Research Centre for Geosciences since 2012, where he developed the THM coupled process simulator on the basis of Distinct Element Modelling software, Particle Flow Code from the Itasca Consulting Group (USA). Together with Hanne, Jeoung Seok received Helmholtz Enterprise funding from the Helmholtz Association  (Impulse and Network Fund) for his Helmholtz Enterprise project "DcubeRoc". Since April 2019, Jeoung Seok works as the CEO of DynaFrax and leads several projects in the fields of nuclear waste disposal, geothermal and shale gas reservoir induced seismicity.
From 2022 January, Jeoung Seok is appointed as Adjunct Professor at School of Spatial Environment System Engineering at Handong Global University in Pohang, Korea.
Jeoung Seok's expertise is:
  • Brittle rock fracture propagation
  • THM coupled process modelling
  • Induced seismicity modelling in geothermal & shale gas reservoirs
  • Nuclear waste disposal
  • Earthquake fault physics and modelling
Jian Zhou (Dr.) Consultant
Jian works as a consultant for DynaFrax and is leading the technical part of the development project "Development of fluid flow and seismicity model in Particle Flow Code 3D". He received his Ph.D. in Geological Engineering from the Institute fo Geology and Geophysics, Chinese Academy of Sciences in 2014. He is a Researhc Associate Professor at the Institute of Geotechnical and Underground Engineering, College of Architecture and Civil Engineering at Beijing University of Technology, BJUT.
Jian's expertise is:
  • Hydraulic fracturing of reservoirs
  • Fluid flow behavior in unconventional gas reservoirs
  • Brittle failure of rock masses and acoustic emission
  • Numerical modelling by DEM
Anne Strader (Dr.) Staff scientist
Anne works as a consultant for DynaFrax. She received her Ph.D. in Geophysics and Seismology from the University of California, Los Angeles in 2014. From 2015 to 2018, Anne worked as a postdoctoral researcher for the Helmholtz Centre Potsdam German Research Centre for Geosciences in the Section 2.6 Seismic Hazard and Risk Dynamics, focusing on the development and testing of physics-based earthquake forecast models. Her research concentrates on the role of static and dynamic Coulomb stress transfer in earthquake triggering, and she has developed physics-based seismicity models for Japan, California and Nepal, as well as collaborated on the development of the upcoming second version of the Global Earthquake Activity Rate Model (GEAR2). Shea has alos participated in numerous earthquake forecast experiments with the Collaboratory for the Study of Earthquake Predictability (CSEP). In addition to her work as a DynaFrax consultant, Anne is also a guest researcher of the Helmholtz Centre Potsdam German Research Centre for Geosciences (Section 2.1 Physics of Earthquakes and Volcanoes).
Anne's expertise is:
  • Earthquake physics and the role of Coulomb stress transfer in earthquake triggering
  • Development of physics- and statistics-based seismicity models
  • Earthquake forecast evaluation through the Collaboratory for the Study of Earthquake Predictability (CSEP) testing center