Dr. Jens-Olaf Delfs

Ludewig-Meyn-Straße 10, R.361
Telefon: +49 431 880-2932
Telefax: +49 431 880-4376

Field of work

  • Compressed-air energy storage
  • Multi-component transport
  • Density-dependent flow
  • Coupled partial differential equations
  • High performance computing

Curriculum vitae

  • Since 01/ 2014
    PostDoc at  Kiel University (CAU). Funded by BMBF-project "Auswirkung der Nutzung des geologischen Untergrundes als thermischer, elektrischer oder stofflicher Speicher im Kontext der Energiewende ANGUS+"
  • 02/ 2012 – 12/ 2013
    PostDoc at Water-Earth System Science (WESS) Tübingen c./o. University of Tübingen. Funded by integrated project "Aqua Terra" from 6th EU RTD framework
  • 05/ 2008 – 01/ 2012
    PostDoc at Helmholtz Zentrum for Environmental Research – UFZ Leipzig. Funded by BMBF-project "International Water Research Alliance Saxony IWAS"
  • 07/ 2010 – 09/ 2010
    Research stay with Prof. E. A. Sudicky, Earth and Environmental Sciences, University of Waterloo, Ontario, Canada
  • 01/ 2010
    Doctorate (Dr. rer. nat.) in Geohydrology / Geoinformatics, University of Tübingen
    Thesis: "An Euler-Lagrange concept for transport processes in coupled hydrosystems"
    Supervisors: Prof. O. Kolditz, Center of Applied Geosciences - UFZ Leipzig / Technical University of Dresden and Prof. O. A. Cirpka, University of Tübingen
  •  11/ 2005 – 01/ 2009
    PhD student at Center of applied Geosciences (ZAG), University of Tübingen. Funded by integrated project "Aqua Terra from 6th EU RTD framework"
  • 10/ 2005
    Diploma in Physics at University of Tübingen Studienschwe Titel of thesis: Surface water runoff Supervisors: Prof. O. Kolditz, Center of Applied Geosciences (ZAG) and Prof. W. Kley, Institute of Astronomy and Astrophysics



Journal articles

Delfs, J.-O., Nordbeck, J., & Bauer, S. (2016). Upward brine migration resulting from pressure increases in a layered subsurface system. Environmental Earth Sciences, 75(22): 1441. doi:10.1007/s12665-016-6245-6. Available at:
Maxwell, R. M., Putti, M., Meyerhoff, S., Delfs, J.-O., Ferguson, I. M., Ivanov, V., … Sulis, M. (2014). Surface-subsurface model intercomparison: A first set of benchmark results to diagnose integrated hydrology and feedbacks. Water Resources Research, 50(2): 1531–1549. doi:10.1002/2013WR013725. Available at:
Singh, A., Delfs, J. O., Görke, U. J., & Kolditz, O. (2014). Toward physical aspects affecting a possible leakage of geologically stored CO2 into the shallow subsurface. Acta Geotechnica, 9(1): 81–86. doi:10.1007/s11440-013-0237-4. Available at:
Walther, M., Bilke, L., Delfs, J.-O., Graf, T., Grundmann, J., Kolditz, O., & Liedl, R. (2014). Assessing the saltwater remediation potential of a three-dimensional, heterogeneous, coastal aquifer system: Model verification, application and visualization for transient density-driven seawater intrusion. Environmental Earth Sciences, 72(10): 1–11. doi:10.1007/s12665-014-3253-2. Available at:
Delfs, J.-O., Wang, W., Kalbacher, T., Singh, A. K., & Kolditz, O. (2013). A coupled surface/subsurface flow model accounting for air entrapment and air pressure counterflow. Environmental Earth Sciences, 69(2): 395–414. doi:10.1007/s12665-013-2420-1. Available at:
Grathwohl, P., Rügner, H., Wöhling, T., Osenbrück, K., Schwientek, M., Gayler, S., … Teutsch, G. (2013). Catchments as reactors: a comprehensive approach for water fluxes and solute turnover. Environmental Earth Sciences, 69(2): 317–333. doi:10.1007/s12665-013-2281-7. Available at:
Singh, A., Delfs, J.-O., Shao, H., & Kolditz, O. (2013). Characterization of CO2 Leakage into the Freshwater Body. Energy Procedia, 40: 481–489. doi:10.1016/j.egypro.2013.08.055. Available at:
Singh, A. K., Delfs, J.-O., Böttcher, N., Taron, J., Wang, W., Görke, U.-J., & Kolditz, O. (2013). A Benchmark Study on Non-isothermal Compositional Fluid Flow. Energy Procedia, 37: 3901–3910. doi:10.1016/j.egypro.2013.06.288. Available at:
Delfs, J.-O., Blumensaat, F., Wang, W., Krebs, P., & Kolditz, O. (2012). Coupling hydrogeological with surface runoff model in a Poltva case study in Western Ukraine. Environmental Earth Sciences, 65(5): 1439–1457. doi:10.1007/s12665-011-1285-4. Available at:
Kalbacher, T., Delfs, J.-O., Shao, H., Wang, W., Walther, M., Samaniego, L., … Kolditz, O. (2012). The IWAS-ToolBox: Software coupling for an integrated water resources management. Environmental Earth Sciences, 65(5): 1367–1380. doi:10.1007/s12665-011-1270-y. Available at:
Kolditz, O., Bauer, S., Bilke, L., Böttcher, N., Delfs, J. O., Fischer, T., … Zehner, B. (2012). OpenGeoSys: an open-source initiative for numerical simulation of thermo-hydro-mechanical/chemical (THM/C) processes in porous media. Environmental Earth Sciences, 67(2): 589–599. doi:10.1007/s12665-012-1546-x. Available at:
Walther, M., Delfs, J.-O., Grundmann, J., Kolditz, O., & Liedl, R. (2012). Saltwater intrusion modeling: Verification and application to an agricultural coastal arid region in Oman. Journal of Computational and Applied Mathematics, 236(18): 4798–4809. doi:10.1016/ Available at:
Delfs, D.-P. J.-O., Park, P. D. C.-H., Kolditz, P. D. O., & Kalbus, M. S. E. (2009). Ein physikalisch basiertes Modellkonzept zur Transportmodellierung in gekoppelten Hydrosystemen. Grundwasser, 14(3): 219–235. doi:10.1007/s00767-009-0114-0. Available at:
Delfs, J.-O., Park, C.-H., & Kolditz, O. (2009). A sensitivity analysis of Hortonian flow. Advances in Water Resources, 32(9): 1386–1395. doi:10.1016/j.advwatres.2009.06.005. Available at:
Schneider, C. L., Attinger, S., Delfs, J.-O., & Hildebrandt, A. (2009). Implementing small scale processes at the soil-plant interface–the role of root architectures for calculating root water uptake profiles. Hydrology and Earth System Sciences Discussions, 6(3): 4233–4264. Available at:
Kolditz, O., Delfs, J.-O., Bürger, C., Beinhorn, M., & Park, C.-H. (2008). Numerical analysis of coupled hydrosystems based on an object-oriented compartment approach. Journal of Hydroinformatics, 10(3): 227. doi:10.2166/hydro.2008.003. Available at:
Kolditz, O., Du, Y., Bürger, C., Delfs, J., Kuntz, D., Beinhorn, M., & te Stroet, C. (2007). Development of a regional hydrologic soil model and application to the Beerze–Reusel drainage basin. Environmental Pollution, 148(3): 855–866. doi:10.1016/j.envpol.2007.01.046. Available at:


Conference proceedings (peer-reviewed)

Delfs, J. O., Gayler, S., Klein, C., Kolditz, O., Priesack, E., Singh, A., & Wang, W. (2014). A mechanistic approach towards catchment hydrology and pollutant cycling. In N. X. Thinh (Ed.), GI Tagungsband 2014. 17. Workshop: Modellierung und Simulation von Ökosystemen in Usedom, Germany. Available at:
Delfs, J.-O., Sudicky, E. A., Park, Y.-J., Laren, R. G., Kalbacher, T., & Kolditz, O. (2012). An inter-comparison of two coupled hydrogeological models. Proceedings of XIX international conference on water resources CMWR in Illinois, USA. Available at:
Delfs, J.-O., Park, C.-H., & Kolditz, O. (2009). An Euler-Lagrange approach to transport modelling in coupled hydrosystems. Calibration and Reliability in Groundwater Modelling: Managing Groundwater and the Environment, IAHS 341: 166–171. ModelCARE 2009 in Wuhan, China. Available at:
Park, C. H., Delfs, J. O., & Kolditz, O. (2008). Particle tracking of Cryptosporidium oocysts from surface to groundwater. GQ07: Securing Groundwater Quality in Urban and Industrial Environments, 324: 47–54. 6th International Groundwater Quality Conference in Fremantle, Australia. Available at:


Book chapters

Walther, M., Stoeckl, L., Delfs, J.-O., & Graf, T. (2015). Density-Dependent Flow. In O. Kolditz, H. Shao, W. Wang, & S. Bauer (Eds.), Thermo-Hydro-Mechanical-Chemical Processes in Fractured Porous Media: Modelling and Benchmarking, pp. 205–212. Springer International Publishing doi:10.1007/978-3-319-11894-9_8. Available at:
Delfs, J.-O., Beinhorn, M., & Wu, Y. (2012). Overland Flow. In O. Kolditz, U.-J. Görke, H. Shao, & W. Wang (Eds.), Thermo-Hydro-Mechanical-Chemical Processes in Porous Media, pp. 143–147. Springer Berlin Heidelberg. Available at:
Sun, F., Watanabe, N., & Delfs, J.-O. (2012). Groundwater Flow. In O. Kolditz, U.-J. Görke, H. Shao, & W. Wang (Eds.), Thermo-Hydro-Mechanical-Chemical Processes in Porous Media, pp. 107–123. Springer Berlin Heidelberg. Available at:
Walther, M., Delfs, J.-O., Park, C.-H., Musuuza, J., Radu, F., & Attinger, S. (2012). Density Dependent Flow. In O. Kolditz, U.-J. Görke, H. Shao, & W. Wang (Eds.), Thermo-Hydro-Mechanical-Chemical Processes in Porous Media, pp. 235–245. Springer Berlin Heidelberg. Available at: