Browsing Bergen Open Research Archive by Author "Chiogna, Gabriele"

Now showing items 1-3 of 3

Identifying Stagnation Zones and Reverse Flow Caused by River-Aquifer Interaction: An Approach Based on Polynomial Chaos Expansions

Merchán-Rivera, P.; Wohlmuth, Barbara Irmgard; Chiogna, Gabriele (Journal article; Peer reviewed, 2021)

Fluctuating stream stages and peak-flow events can significantly influence the interactions between streams and aquifers and modify the hydraulic gradient, the flux exchange and the subsurface flow paths. As a result, ...
Impacts of Peak-Flow Events on Hyporheic Denitrification Potential

Singh, Tanu; Gupta, Shubhangi; Chiogna, Gabriele; Krause, Stefan; Wohlmuth, Barbara Irmgard (Journal article; Peer reviewed, 2022)

Subsurface flows, particularly hyporheic exchange fluxes, driven by streambed topography, permeability, channel gradient and dynamic flow conditions provide prominent ecological services such as nitrate removal from streams ...
Temporal Scale-Dependent Sensitivity Analysis for Hydrological Model Parameters Using the Discrete Wavelet Transform and Active Subspaces

Bittner, Daniel; Engel, Michael; Wohlmuth, Barbara; Labat, David; Chiogna, Gabriele (Journal article; Peer reviewed, 2021)

Global sensitivity analysis is an important step in the process of developing and analyzing hydrological models. Measured data of different variables are used to identify the number of sensitive model parameters and to ...