Sökning: "drainage network"

Visar resultat 16 - 20 av 39 uppsatser innehållade orden drainage network.

  1. 16. Sustainable Drainage Systems Assessment and Optimisation-A case study for Lussebäcken Catchment, Helsingborg

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Bernard Nsabimana; Néstor Utande Estallo; [2019]
    Nyckelord :Hydraulics; hydrology; Sustainable Drainage Systems; urban; Modeling; MIKE URBAN; Technology and Engineering;

    Sammanfattning : Increase of urbanization and climate change are one of the factors that have been highlighted to influence hydrography. This is resulting in an increase in peak flow within an urban watershed. Downstream flooding and increased pollution are the problems that arises. LÄS MER

  3. 17. The influence of storm movement and temporal variability of rainfall on urban pluvial flooding : 1D-2D modelling with empirical hyetographs and CDS-rain

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Jimmy Olsson; [2019]
    Nyckelord :pluvial flooding; flood modelling; 1D-2D modelling; MIKE FLOOD; MIKE 21; MIKE URBAN; storm movement; temporal variability; hyetograph; design storm; Chicago Design Storm; CDS-rain; pluviala översvämningar; översvämningsmodellering; 1D-2D modellering; MIKE FLOOD; MIKE 21; MIKE URBAN; molnrörelse; hyetograf; typregn; Chicago Design Storm; CDS-regn;

    Sammanfattning : Pluvial floods are formed directly from surface runoff after extreme rain events. Urban areas are prone to suffer from these floods due to large portions of hardened surfaces and limited capacity in the stormwater infrastructure. Previous research has shown that catchment response is influenced by the spatio-temporal behaviour of the rainstorm. LÄS MER

  4. 18. Beslutsstöd för att finna diken och bedöma behov av dikesrensning

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Elias Hannus; [2019]
    Nyckelord :hydrologi; erosion; flödesschema; markfuktighetskarta; höjdmodell; bildtolkning; hydrology; erosion; flow chart; soil moisture map; digital elevation model; image interpretation;

    Sammanfattning : En betydande areal torvtäckt mark dikades i Sverige under första halvan av 1900-talet i syfte att omvandla myrimpediment till produktiv skogsmark. Många av dikena hos markvärden för denna studie, Svenska Cellulosa AB (SCA), är nu i behov av rensning för att produktionen skall bibehållas. Rensning medför också allvarliga miljörisker. LÄS MER

  5. 19. Delineation of Ditches in Wetlands by Remote Sensing

    Kandidat-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Andreas Gustavsson; Selberg Martin; [2018]
    Nyckelord :GIS; drainage network; LiDAR; GIS; dräneringsnätverk; LiDAR;

    Sammanfattning : Wetlands have been heavily affected by human-alteration, this is done to drain thewetland so that the ground can be used for other purposes such as forestry oragriculture. With high accuracy data available now, it is possible to use differentmethods automatically to identify these ditches in wetlands or other areas. LÄS MER

  7. 20. Groundwater investigation at Storsudret, Gotland

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

    Författare :Ludvig Almqvist; [2018]
    Nyckelord :Subsurface dam; subdam; groundwater level; GIS; storage; groundwater balance; Topographic wetness index; Gwbal; well extraction; drainage control; specific capacity;

    Sammanfattning : Sweden have faced decreasing groundwater storage with critical low groundwater levels for several years. Gotland is one example with issues of providing freshwater due to the low groundwater levels. These circumstances can be related to impacts caused by early agriculture development, an increased demand of freshwater and climate change. LÄS MER