Search for dissertations about: "Water cycle"

Showing result 1 - 5 of 279 swedish dissertations containing the words Water cycle.

  1. 1. Global and continental perspectives on the sustainability of future agricultural water management

    University dissertation from Stockholm : Stockholm University

    Author : Luigi Piemontese; Stockholms universitet.; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; water; sustainable water management; agriculture; water harvesting; climate change; vetenskap om hållbar utveckling; Sustainability Science;

    Abstract : Ensuring water and food security in the Anthropocene requires an understanding of combined climate change patterns and land and water management options from local to global scale. In many regions, irrigation from river and groundwater sources is being used at unsustainable rates and climate change will further threaten those water sources. READ MORE

  2. 2. The interplay between atmosphere, hydrology and land use by environmental modelling

    University dissertation from Lund University (Media-Tryck)

    Author : Fabio Pereira; Lunds universitet.; Lund University.; [2013]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Land use changes; expansion of sugarcane; hydrological cycle; coupled models;

    Abstract : Interactions between land surface and atmosphere induced by human activities and natural environmental dynamics act on a time scale that varies from seconds to millions of years. It is by exchanging heat, water, energy and carbon that land surface and atmospheric processes are closely interrelated and influence each other in reciprocal ways. READ MORE

  3. 3. Water erosion modeling using fractal rainfall disaggregation- a study in semiarid Tunisia

    University dissertation from Lund University (Media-Tryck)

    Author : Sihem Jebari; Lunds universitet.; Lund University.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; reservoir siltation; regionalization; fractal analysis; Atlasic mountain range; erosive events; semiarid area; soil loss; Tunisia.;

    Abstract : In the Tunisian semiarid area, water erosion processes have led to negative economic and environmental consequences in a context of limited water resources. To characterize and predict these degradation phenomena, a comprehensive high-resolution data base on erosive rainfall, together with siltation records for 28 small reservoirs were analyzed. READ MORE

  4. 4. Water Erosion Modelling using Fractal Rainfall Disaggregation, a Study in Semiarid Tunisia

    University dissertation from Lund University (Media-Tryck)

    Author : Sihem Jebari; Lunds universitet.; Lund University.; [2009]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil erosion; semiarid; Tunisia; rainfall; fractal; diaggregation;

    Abstract : In the Tunisian semiarid area, water erosion processes have led to negative economic and environmental consequences in a context of limited water resources. To characterize and predict these degradation phenomena, a comprehensive high-resolution data base on erosive rainfall, together with siltation records for 28 small reservoirs were analyzed. READ MORE

  5. 5. Heat and water flows in freezing and thawing soils numerical modelling, laboratory and field observations

    University dissertation from Luleå : Luleå tekniska universitet

    Author : Helén Engelmark; [1993]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Vattenteknik; Water Resources Engineering;

    Abstract : A laboratory study of infiltration rates into frozen and unfrozen fine sand, including temperature effects of both soil and infiltration water, is reported. The average infiltration rate varied from about 10.6 mm/min for unfrozen conditions, to about 1-2 mm/min for frozen conditions. READ MORE