Sökning: "Bathymetry"

Visar resultat 21 - 25 av 53 uppsatser innehållade ordet Bathymetry.

  1. 21. Potentialities of Unmanned Aerial Vehicles in Hydraulic Modelling : Drone remote sensing through photogrammetry for 1D flow numerical modelling

    Master-uppsats, KTH/Byggvetenskap

    Författare :Andrea Reali; [2018]
    Nyckelord :UAV; remote sensing; structure from motion; photogrammetry; 1D steady flow hydraulic numerical modelling; hydraulic modelling;

    Sammanfattning : In civil and environmental engineering numerous are the applications that require prior collection of data on the ground. When it comes to hydraulic modelling, valuable topographic and morphology features of the region are one of the most useful of them, yet often unavailable, expensive or difficult to obtain. LÄS MER

  3. 22. Energiförluster i vattenkraftstunnlar och älvsträckor : Hur påverkas Manningtalet när skrovlighetens geometri är stor i förhållande till tvärsektionens geometri?

    Kandidat-uppsats, Högskolan i Gävle/Energisystem

    Författare :Hampus Myhr; [2018]
    Nyckelord :Manningtal; Strömningsförluster; Energiförluster; Vattenfall;

    Sammanfattning : When water travels along a channel is the bottom which the water is in direct contact with, defined by a coefficient named Manning’s coefficient of friction. This coefficient explains the roughness of the channel bed. A rough surface equals a low Manning’s coefficient. LÄS MER

  4. 23. Satellite derived data to support flood modelling : An application to the Po River

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

    Författare :Victor Alejandro Ortiz Peña; Milos Dinic; [2018]
    Nyckelord :Hydraulic Modelling; Flood Modelling; HEC-RAS; Mannings Coefficient; DEM; LiDAR; SRTM; Virtual Stations;

    Sammanfattning : Satellite derived data has become an essential input in hydraulic modelling. Digital ElevationModels (DEMs) derived from different sources through remote sensing techniques have become a powerful tool for poorly gauged regions. LÄS MER

  5. 24. Sedimentation in a small lake, more complex than previously assumed. : Bathymetrical and geochemical sediment analyses in Kassjön (63°55´ N, 20°01´ E).

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Viktor Gydemo Östbom; [2017]
    Nyckelord :Kassjön; Sedimentation; Element distribution; Small lake; Bathymetry; X-ray fluorescence spectrometry;

    Sammanfattning : For studies using lake sediments as a medium, understanding factors governing sediment distribution and properties is crucial for making accurate interpretations and conclusions. General lake sedimentation theory is however mainly based on larger lakes and systems, potentially leading to biased sampling and data interpretation when applied on a smaller system. LÄS MER

  7. 25. High-resolution offshore reflection seismic investigation of the Stockholm Bypass tunnel

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Fengyi Liu; [2017]
    Nyckelord :infrastructure; tunnel; seismic; reflection; multiple; engineering;

    Sammanfattning : Boat-towed high-frequency, short source and receiver spacing, reflection seismic data, 16 profiles and in total 3884 m long, were acquired in 2008 for the planning of the Stockholm Bypass multilane (3 lanes in each direction in two different tubes) underground motorway tunnel designed to ease the ever increasing car traffic on the city and neighbouring regions. The planned bypass will be about 21 km long of which 18 km will be in the form of bedrock tunnel. LÄS MER