Sökning: "Temporary Streams"

Hittade 5 uppsatser innehållade orden Temporary Streams.

  1. 1. Dynamics of streamflow and stream chemistry in a Swiss pre-Alpine headwater catchment : A fine scale investigation of flow occurrence and electrical conductivity in the temporary streams in the lower Studibach catchment

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

    Författare :Elise Baumann; Hanna Berglund; [2021]
    Nyckelord :Temporary Streams; Pre-Alpine Catchment; Streamflow; Stream Chemistry; Fine Scale Investigation; Electrical-conductivity; Stream Mapping; Temporära bäckar; Pre-Alpina avrinningsområden; Bäckflöden; Vattenkemi; Finskalig undersökning; Elektrisk konduktivitet; Bäck-kartering;

    Sammanfattning : Temporary streams and their dynamics have often been largely overseen in hydrological research and there is relatively little knowledge about how the occurrence of flow in these streams varies temporally and spatially. Temporary streams are important from a hydro- logical perspective because they affect water quantity and quality in downstream peren- nial reaches, and from an ecological perspective because they provide habitat to unique species. LÄS MER

  2. 2. Feature detection for geospatial referencing

    Master-uppsats, Umeå universitet/Institutionen för fysik

    Författare :Niklas Nilsson; [2019]
    Nyckelord :Feature detection; feature description; feature; image processing; digital image processing; image analysis; aerial photography; drone; Bildanalys; flygfotografi; flygfoto; bildprocessering;

    Sammanfattning : With the drone industry's recent explosive advancement, aerial photography is becoming increasingly important for an array of applications ranging from construction to agriculture. A drone flyover can give a better overview of regions that are difficult to navigate, and is often significantly faster, cheaper and more accurate than man-made sketches and other alternatives. LÄS MER

  3. 3. Utveckling av metod för att synliggöra och värdera ekosystemtjänster i öppen dagvattenhantering

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Erika Hagström; [2016]
    Nyckelord :assessment tools; ecosystem services; storm water; sustainable storm water management; urban ecosystems; valuation; dagvatten; ekosystemtjänster; ekosystemtjänstvärdering; urbana ekosystem; värderingsverktyg; öppen dagvattenhantering;

    Sammanfattning : Nature provides various services to society that humans are completely dependent on for their survival. These services are called ecosystem services, and can be, for example, clean air, clean water and pollination of crops. To live close to nature and green areas is also important for our well being. LÄS MER

  4. 4. The Origin of Streams : Stream cartography in Swiss pre alpine headwater

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Oskar Sjöberg; [2016]
    Nyckelord :Temporary stream; Stream cartography; Drainage density; Hydrological connection; Topographic wetness index; Upslope accumulated area; Stream head; Headwater catchment;

    Sammanfattning : Temporary streams have received undeservedly little scientific attention and as a result their role in hydrological, biogeochemical and ecological processes is not yet fully understood. The ultimate goal of the research was to gain a better understanding of the temporary stream network and the processes that control it and determine how the active and connected stream length change with catchment wetness conditions to find simple methods to map seasonal and event-based changes in temporary flowing stream networks. LÄS MER

  5. 5. Vattenkvalitén i Fredstorpsbäcken : dikad bäck på fastigheten Rämningstorp i Skara kommun

    L3-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Malin Svensson; [2007]
    Nyckelord :dikesrensning; järnockra; järnbakterier; sötvattenskemi; sötvattensekologi; dikning;

    Sammanfattning : The estate of Rämningstorp in the region of Västergötland in southern Sweden is administered by the holding trust company Skogssällskapet i Skövde. In 1999 measures were taken by Skogssällskapet to drain the stream Fredstorpsbäcken as a means to increase the forest productivity of the surrounding lands, which are situated on the estate of Rämningstorp. LÄS MER