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Simulations of groundwater levels and soil water content: Development of a conceptual hydrological model with a continous soil profile
Linköping University, Department of Thematic Studies.
2003 (English)Independent thesis Advanced level (degree of Magister)Student thesisAlternative title
Simulering av grundvattennivå och markvatteninnehåll : Utveckling av en konceptuell hydrologisk modell med kontinuerlig markprofil (Swedish)
Abstract [en]

Transport of chemical substances through a catchment depend to a large extent on the water content of the soil through which they are transported. When the groundwater level rise and fall, redox conditions change in the soil and the transport of substances is affected.

The aim of this study is to develop a hydrological model which is able to simulate soil water content at different depths and groundwater level in a soil profile. A new type of conceptual model is developed, which uses a continous represenation of the soil and soil water from the soil surface down to the bedrock. The model is intended to be applied on small catchments at a later stage.

The results show that the simulation of groundwater levels was greatly improved compared to previous results. Simulation of soil water content at selected depths is not yet satisfactory. The runoff simulation was accurate at one of the sites but did not work as well at the other. At one of the sites it was also possible to combine good simulations of runoff and groundwater levels but at the other it was only possible to obtain acceptable simulations of either runoff or groundwater.

It is suggested that model performance could be improved by letting the porosity decrease and the soil water content increase non-linearly with depth. Calculations of evaporation from soil and runoff also need to be modified.

Place, publisher, year, edition, pages
Institutionen för tematisk utbildning och forskning , 2003. , 43 p.
Keyword [en]
Interdisciplinary studies, Hydrology, modelling, groundwater, soil moisture, catchment
Keyword [sv]
National Category
Social Sciences Interdisciplinary
URN: urn:nbn:se:liu:diva-1910ISRN: LIU-ITUF/MV-D--03/13--SEOAI: diva2:19237
Available from: 2003-07-30 Created: 2003-07-30

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