Head of working group

Prof. Dr. Gudrun Massmann


AG Hydrogeology and Landscape hydrology
IBU, Fk. V, Building A1 
Carl von Ossietzky Universität 
D-26111 Oldenburg


Renate Kettmann 
Room: A1 1-130 
Phone: ++49 (0) 441 / 798 - 4236 
Fax: ++49 (0) 441 / 798 -3769 


The main emphasis our research is to gain an understanding on complex hydrodynamic and hydrochemical processes in the aquatic environment, in particular surface water-groundwater exchange, water-rock interaction, water and solute fluxes at both medium to landscape scale as well as the behavior of pollutants in groundwater. Special emphasis is on coastal hydrogeology and investigations at the land-sea interface. Additionally, we are interested in the role of water in ecosystems, in particular its interactions with soils and vegetation. For this purpose, we carry out field investigations, experimental work and analysis in the laboratory accompanied by numerical modeling.

Current Dissertations (Working titles)

  • Rezwana Binte Delwar: "Exploring the phenomena of fingering flow in the subterranean estuary as a multiplier for the iron curtain and reactive transport processes"
  • Laura Bräunig: „Experimental and numerical characterization of geochemical interactions and groundwater dynamics during managed aquifer reacharge with monovalent-partial desalinated water”
  • Carla Dodd (Nelson Mandela University, South Afrika, Co-supervision): "The Algoa Bay Region Groundwater Cycle - Linking Source to Coast"
  • Annika Desens (Bundesamt für Geowissenschaften und Rohstoffe): "Characterisation of groundwater ages in Germany" 
  • Patrick Hähnel: "Future development of barrier island freshwater lenses in the face of climate change"
  • Dani Hamade (AG Technische Bildung, Co-supervision): "Der Klimawandel im Nordwesten - Auswirkungen auf den natürlichen Wasserkreislauf und die technische Wassernutzung als Thema schulischer und außerschulischer Bildung."
  • Kilian Loesch (extern, Landwirtschaftskammer Niedersachsen): "Der Einfluss von waldbaulichen Umbaumaßnahmen auf den Bodenwasserhaushalt an nährstoffarmen und grundwasserfernen Kiefernstandorten in niederschlagsarmen Regionen Niedersachsens"
  • Lena Thissen: „Generic analysis of freshwater lenses in the context of climate change using numerical

Completed Dissertations

  • Nele Grünenbaum (2021): "Spatial and temporal variability of submarine groundwater discharge on barrier islands”
  • Anne Mehrtens (2021, with Dr. Victoria Burke): "From Manure to Groundwater - The Fate of Veterinary Pharmaceuticals within the Aquatic Environment"
  • Tobias Holt (2020): "Hydrogeological evolution and dynamics of a young barrier island (Ostplate Spiekeroog)"
  • Stephan Seibert (2019): "Hydrogeochemical Processes in a Barrier Island Aquifer (Spiekeroog, Northwest Germany)"
  • Thi Thuy Hang Nham (2017): "Reactive transport modeling of organic trace compounds in groundwater"
  • Victoria Burke (2014): "The impact of redox conditions on the attenuation of wastewater-derived organic micropollutants in groundwater"
  • Tania Röper (2014): "Formation, Characterization and Groundwater Flow Patterns of a Barrier Island Freshwater Lens (Spiekeroog, Northwest Germany)" 
(Changed: 23 Nov 2022)