The Impact of Hydraulic Conductivity on TopographyDriven Groundwater Flow
2007 (English)In: Publs, Inst. Geophys. Pol. Acad. Sc, Vol. E-7, 160-167 p.Article in journal (Refereed) Published
Landscape topography is the most important driving force for groundwaterflow and all scales of topography contribute to groundwater movement. Here we present results of how different scales of topography affect the groundwater flowat different depths. The study is based on a spectral analysis of the topographyand a couple of exact 3-D solutions of the groundwater flow. We are also analyzing how different heterogeneities of the subsurface hydraulic conductivity impactthe groundwater flow at different depths and alter the relative importance of differenttopographic scales on the groundwater flow. Quaternary deposits are extremelyimportant for the infiltration at the ground surface, but the effect is primarilyconstrained to the deposit strata. Depth dependent hydraulic conductivity has a major impact on the size and depth of the groundwater flow cells, but italso affects the infiltration at the surface. Depth dependent hydraulic conductivity tends to counteract the effect of the large-scale topography on the groundwater flow more effectively than the smaller landscape scales.
Place, publisher, year, edition, pages
2007. Vol. E-7, 160-167 p.
IdentifiersURN: urn:nbn:se:kth:diva-11171OAI: oai:DiVA.org:kth-11171DiVA: diva2:236807
QC 201008022009-09-252009-09-252010-08-02Bibliographically approved