EGU21-15466, updated on 04 Mar 2021
https://doi.org/10.5194/egusphere-egu21-15466
EGU General Assembly 2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.

Investigation of runoff generation and Radon-222 activities in a forested catchment using HydroGeoSphere

Muhammad Usman Munir1 and Sven Frei2
Muhammad Usman Munir and Sven Frei
  • 1University of Bayreuth, Department of Hydrology, Bayreuth, Germany (muhammad.munir@uni-bayreuth.de)
  • 2University of Bayreuth, Department of Hydrology, Bayreuth Center of Ecology and Environmental Research (BAYCEER), (sven.frei@uni-bayreuth.de)

Radon (222Rn) is widely used as a natural tracer to investigate surface/groundwater interactions for hydrological systems. Because 222Rn activities in groundwater are higher compared to surface water, it can be used to quantify groundwater inflow rates into rivers and streams. Here we present a process-based model to simulate 222Rn emanation and transport in groundwater to investigate surface/groundwater interactions for the  Große Ohe catchment, located in the Bavarian Forest National Park (Germany). For representing surface and groundwater flow in the catchment as well as transport, decay, and emanation of 222Rn, the processed based hydrological model HydroGeosphere (HGS) is used. HGS is an integrated surface sub-surface hydrological model (ISSHM) which can simulate reactive transport in surface and sub-surface flow. The model was calibrated using measured in-stream 222Rn activities and continuous discharge observations. Main objective of this study is to investigate runoff generation in the catchment and how hydrological processes are affecting the age and residence time composition of groundwater.  

How to cite: Munir, M. U. and Frei, S.: Investigation of runoff generation and Radon-222 activities in a forested catchment using HydroGeoSphere, EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-15466, https://doi.org/10.5194/egusphere-egu21-15466, 2021.

Display materials

Display file