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The three research lines of Water Nexus:

PhD 1: Rapid regional mapping of




saline groundwater distributions and hydrogeological properties using airborne geophysics

UU, Jude King King


  • Assess locations and volumes of fresh and brackish water in deltas through combining airborne geophysics, conventional monitoring techniques, modelling and data-model integration
  • Map out vulnerabilities and opportunities for fresh as well as brackish water use and control

article: King, J., Oude Essink, G.H.P., Karaolis, M., Siemon, B., Bierkens, M.F.P., 2018. Quantifying inversion algorithms using airborne frequency domain electromagnetic data – applied at the Province of Zeeland, the Netherlands. Water Resour. Res. 2060, 1–22. doi:10.1029/2018WR023165 download

PhD 2: Rapid modelling and scenarios for strategic policy



UU, PhD Daniel Zamrsky


  • Build a toolbox (set of methods) for quick but comprehensive model construction, using state-of-the-arte codes
  • Assess current and future fresh-saltwater distributions.
  • Assess regional effects of water management and water technology measures for fresh-salt water use and control.

article: Zamrsky, D., Oude Essink, G.H.P., Bierkens, M.F.P.: 2018. Estimating the thickness of unconsolidated coastal aquifers along the global coastline, Earth Syst. Sci. Data, 10, 1591-1603, download

PhD 3: Operational management of regional salt-fresh water resources

TUDelft, PhD Boran Aydin


  • Set up integrated system to predict fresh water availability to enable day-to-day fresh water control for both water managers and fresh water users

article: Aydin, B.E., Tian, X., Delsman, J., Oude Essink, G.H.P., Rutten, M., Abraham, E., 2018. Optimal Salinity and Water Level Control of Polder Ditches using Model Predictive Control. Environ. Model. Softw. doi:10.1016/j.envsoft.2018.11.010 download

More Information Gualbert Oude Essink
+31 (0)6 30550408
gualbert dot oudeessink at deltares dot nl

Prof.dr. Marc Bierkens
marc dot bierkens at deltares dot nl