Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments

Autor: Ylva Sjöberg, Peter Schaap, Alexa Hinzman, Ype Van der Velde
Přispěvatelé: Earth and Climate
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: Journal of Hydrology, 612
Marion Hinzman, A, Sjöberg, Y, Lyon, S, Schaap, P & van der Velde, Y 2022, ' Using a mechanistic model to explain the rising non-linearity in storage discharge relationships as the extent of permafrost decreases in Arctic catchments ', Journal of Hydrology, vol. 612, no. Part B, 128162, pp. 1-13 . https://doi.org/10.1016/j.jhydrol.2022.128162
Journal of Hydrology 612 (2022)
Journal of Hydrology, 612(Part B):128162, 1-13. Elsevier
ISSN: 0022-1694
Popis: The relationship between groundwater and discharge in Arctic and sub-Arctic regions is strongly controlled by permafrost. Previous work has shown that catchments with thawing frozen soils due to the warming climate are expected to show changes in their storage-discharge relationship. In this study, we use a mechanistic modelling approach to demonstrate that a thawing catchment underlain with continuous permafrost undergoes a dramatic change in storage-discharge relationship. We demonstrate that the effect of permafrost thaw, conceptualized as a reduction of an impermeable layer in the subsurface, will likely only be clearly observable as a change in slope of the recession curve of catchments with hillslope gradients>5 %. For flat catchments (
Databáze: OpenAIRE
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