Publication Details |
| Category | Text Publication |
| Reference Category | Qualification assignments |
| Title (Primary) | Coupled movement of liquid water, water vapor, and heat in deep vadose zones |
| Author | Madi, R. |
| Year | 2018 |
| Department | BOSYS |
| Page To | 119 |
| Language | englisch |
| Abstract | Arid and semi-arid regions are expanding noticeably and currently represent about 30% of the global terrestrial surface area. The effects of water scarcity in semi-arid and arid regions on human lives are felt with increasing severity by local populations. Groundwater recharge is very important in these regions as groundwater is often the only source to meet the increasing urban, industrial, and agricultural water requirements, therefore continuous efforts are exerted to improve quantifying the replenishment of aquifers in arid and semi-arid regions. The accurate quantification of the unsaturated zone water fluxes is essential to the estimation of groundwater recharge. This thesis aims to improve our ability to model these fluxes, and in order to do so, addresses the following issues: (i) Testing the physical-mathematical properties of many of the available parameterizations of the soil water retention curve and improving them where necessary to find parameterizations capable of covering the full water content range, including the dry end; (ii) Testing experimentally those soil hydraulic parameterizations that were found to be physically sound in the physical-mathematical tests on their ability to model the interplay between liquid water flow and water vapor flow in a simple porous medium under dry conditions; (iii) Carrying out a simulation study of coupled liquid water, water vapor, and heat flows in a 100 m bare soil profile under arid/hyper-arid conditions to clarify the role of wet and dry years on the dynamics of ground water recharge, the potential role of water vapor flow and the way the atmospheric input signal travels downward through the vadose zone for two soil hydraulic parameterizations suitable for dry conditions. |
| Persistent UFZ Identifier | https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=20986 |
| Madi, R. (2018): Coupled movement of liquid water, water vapor, and heat in deep vadose zones Dissertation, Martin-Luther-Universität Halle-Wittenberg, Naturwissenschaftliche Fakultät III - Agrar- und Ernährungswissenschaften, Geowissenschaften und Informatik 119 pp. |
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