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

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, stagnation zones and reverse flow may appear in different parts of an aquifer and...

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Veröffentlicht in:	Water resources research 2021-12, Vol.57 (12), p.n/a
Hauptverfasser:	Merchán‐Rivera, P., Wohlmuth, B., Chiogna, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Aquifers Boundary conditions Chaos Confluence Creeks & streams Flow paths Groundwater Groundwater flow Hydraulic gradient Mathematical models Nonlinear dynamics Nonlinear systems Numerical models Nutrients Pollutants Pollution dispersion polynomial chaos expansions Polynomials probability maps Probability theory Residence time reverse flow Reversed flow Rivers Solutes Spectral methods Stagnation stagnation points Streams Subsurface flow surface water‐groundwater interaction Uncertainty uncertainty quantification
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