Sökning: "vadose zone"

Visar resultat 1 - 5 av 6 uppsatser innehållade orden vadose zone.

  1. 1. Modelling the water balance of a grassland soil

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Elvin Rufullayev; [2020]
    Nyckelord :calibration; high precision weighing lysimeter; numerical modelling; plant growth; potential evapotranspiration; soil processes; STELLA Architect; temperate grassland; TERENO; vadose zone; validation;

    Sammanfattning : Expected future climate change characterized by higher temperatures and more frequent summer droughts may cause significant changes in soil hydrological processes leading to limited nutrient and water availability and reductions in plant growth. Soil hydrological and plant growth models attempt to reproduce the complex interactions in the plant-soil water system in terms of mathematical equations, parameters and coefficients. LÄS MER

  3. 2. Modellering av föroreningspridning från dagvatten till grundvatten : En studie av Norrvattens reservvattentäkt i Hammarbymagasinet, Upplands Väsby kommun

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Anton Hansson; [2020]
    Nyckelord :Dagvatten; dagvatteninfiltration; vattenförsörjning; grundvattenmodellering; föroreningspridning;

    Sammanfattning : I detta arbete har studerats hur infiltration av dagvatten påverkar grundvattenkvalitén i del av stockholmsåsen som kallas Hammarbymagasinet. Hammarbymagasinet ligger i Upplands Väsby kommun norr om Stockholm och nyttjas av kommunalförbundet Norrvatten som reservvattentäkt vid eventuella störningar i den ordinarie försörjningen från Görvälnverket vid Mälaren. LÄS MER

  4. 3. Water flow and solute transport through a frozen clay soil

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Anna Elena Hess; [2017]
    Nyckelord :pesticides; freezing; thawing; leaching; soil;

    Sammanfattning : Freezing and thawing of soil affect water flow in the vadose zone for instance by altering soil structure or ice blocking parts of the pore system. Changes in soil hydraulic properties impact solute transport and therefore the risk that pesticides and other agrochemicals are transported towards groundwater. LÄS MER

  5. 4. Benchmarking a random forest for predicting preferential flow in soils

    Master-uppsats, SLU/Dept. of Soil and Environment

    Författare :Helena Jordà Guerra; [2013]
    Nyckelord :preferential flow; random forest; benchmarking; undisturbed soil; soil database;

    Sammanfattning : Preferential flow processes are important to fully understand flow and solute transport in the vadose zone and implement adequate management practices. Physical models are difficult to use at large scales to predict soil susceptibility to preferential flow. Instead, pedotransfer functions might be applied. LÄS MER

  7. 5. Soil and groundwater contamination with gasoline and diesel oil : assessment of subsurface hydrocarbon contamination resulting from a fuel release from an underground storage tank in Vanstad, Skåne, Sweden

    Magister-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Malgorzata Glowacka; [2005]
    Nyckelord :bensin; diesel; läckage; förorening; underjordstank; gasoline; diesel oil; contamination; underground storage tank; leakage; Earth and Environmental Sciences;

    Sammanfattning : Spills and leaks from storage tanks constitute the most common groundwater contamination source with petroleum products. Gasoline and diesel pools do not spread extensively along the water table, but dissolved constituents are transported in groundwater on relatively larger distances. LÄS MER