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Hydrology and water chemistry in a heterogeneous landscape : process-based modelling of coupled surface water and groundwater flow across contrasting boreal catchments

Jutebring Sterte, Elin (2021). Hydrology and water chemistry in a heterogeneous landscape : process-based modelling of coupled surface water and groundwater flow across contrasting boreal catchments. Diss. (sammanfattning/summary) Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880
ISBN 978-91-7760-792-2
eISBN 978-91-7760-793-9
[Doctoral thesis]

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Abstract

Surface water and groundwater are connected, and the exchange between them is a vital part of a catchment’s hydrology. Along the flow paths through the catchment, biogeochemical processes can change the water’s chemical composition. The degree of the chemical change depends largely on the water pathways and travel times through the subsurface environment. This thesis describes the application of a 3D coupled surface water and groundwater model to the well-studied Krycklan catchment to investigate the impact of hydraulic properties, landscape variability, and seasonal changes on the hydrology and water quality across nested catchments in a heterogeneous boreal landscape. The results show that variability in specific discharge and surface water and groundwater interactions can be linked to catchment characteristics such as soil properties and spatial variability in winter soil frost. Spatial variability of water quality, including weathering of base cations and locations of dissolved organic carbon-rich sources along the streams, was linked to different catchment characteristics affecting hydrology (including travel times and water pathways). Some catchment characteristics, such as soil frost, were found to not necessarily impact the modelling of streamflow dynamics from a large-scale perspective. However, soil frost was still important for the flow dynamics on smaller scales, and an important part of the spatial variability of stream water quality. This research highlights the importance of expanding our knowledge of the flow dynamics of different landscape components, surface water and groundwater interactions, and how hydrology can be linked to water quality across temporal and spatial scales.

Authors/Creators:Jutebring Sterte, Elin
Title:Hydrology and water chemistry in a heterogeneous landscape : process-based modelling of coupled surface water and groundwater flow across contrasting boreal catchments
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2021
Number:2021:57
Number of Pages:74
Publisher:Department of Forest Ecology and Management, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-7760-792-2
ISBN for electronic version:978-91-7760-793-9
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Article category:Other scientific
Version:Published version
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Oceanography, Hydrology, Water Resources
Keywords:flow dynamics, temporal and spatial scales, solute transport, modelling
URN:NBN:urn:nbn:se:slu:epsilon-p-113429
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-113429
ID Code:25275
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Forest Ecology and Management
Deposited By: SLUpub Connector
Deposited On:08 Sep 2021 11:25
Metadata Last Modified:21 Sep 2021 08:47

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