Groundwater-surface water interactions across scales in a boreal landscape investigated using a numerical modelling approach
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Groundwater-surface water interactions across scales in a boreal landscape investigated using a numerical modelling approach. / Jutebring Sterte, Elin; Johansson, Emma; Sjöberg, Ylva; Huseby Karlsen, Reinert; Laudon, Hjalmar.
In: Journal of Hydrology, Vol. 560, 2018, p. 184-201.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Groundwater-surface water interactions across scales in a boreal landscape investigated using a numerical modelling approach
AU - Jutebring Sterte, Elin
AU - Johansson, Emma
AU - Sjöberg, Ylva
AU - Huseby Karlsen, Reinert
AU - Laudon, Hjalmar
PY - 2018
Y1 - 2018
N2 - Groundwater and surface-water interactions are regulated by catchment characteristics and complex inter- and intra-annual variations in climatic conditions that are not yet fully understood. Our objective was to investigate the influence of catchment characteristics and freeze-thaw processes on surface and groundwater interactions in a boreal landscape, the Krycklan catchment in Sweden. We used a numerical modelling approach and sub-catchment evaluation method to identify and evaluate fundamental catchment characteristics and processes. The model reproduced observed stream discharge patterns of the 14 sub-catchments and the dynamics of the 15 groundwater wells with an average accumulated discharge error of 1% (15% standard deviation) and an average groundwater-level mean error of 0.1 m (0.23 m standard deviation). We show how peatland characteristics dampen the effect of intense rain, and how soil freeze-thaw processes regulate surface and groundwater partitioning during snowmelt. With these results, we demonstrate the importance of defining, understanding and quantifying the role of landscape heterogeneity and sub-catchment characteristics for accurately representing catchment hydrological functioning.
AB - Groundwater and surface-water interactions are regulated by catchment characteristics and complex inter- and intra-annual variations in climatic conditions that are not yet fully understood. Our objective was to investigate the influence of catchment characteristics and freeze-thaw processes on surface and groundwater interactions in a boreal landscape, the Krycklan catchment in Sweden. We used a numerical modelling approach and sub-catchment evaluation method to identify and evaluate fundamental catchment characteristics and processes. The model reproduced observed stream discharge patterns of the 14 sub-catchments and the dynamics of the 15 groundwater wells with an average accumulated discharge error of 1% (15% standard deviation) and an average groundwater-level mean error of 0.1 m (0.23 m standard deviation). We show how peatland characteristics dampen the effect of intense rain, and how soil freeze-thaw processes regulate surface and groundwater partitioning during snowmelt. With these results, we demonstrate the importance of defining, understanding and quantifying the role of landscape heterogeneity and sub-catchment characteristics for accurately representing catchment hydrological functioning.
KW - Catchment
KW - Krycklan
KW - MIKE SHE
KW - Runoff generation
KW - Soil frost
KW - Water balance
U2 - 10.1016/j.jhydrol.2018.03.011
DO - 10.1016/j.jhydrol.2018.03.011
M3 - Journal article
AN - SCOPUS:85043981516
VL - 560
SP - 184
EP - 201
JO - Journal of Hydrology
JF - Journal of Hydrology
SN - 0022-1694
ER -
ID: 223512740