Sökning: "permafrost"

Visar resultat 21 - 25 av 81 uppsatser innehållade ordet permafrost.

  1. 21. Feedback effects in the Arctic region and how they affect the global climate

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Lotta Nyman; [2020]
    Nyckelord :Arctic warming; Arctic change; Climate feedback effect; Lower latitude weather; Arctic amplification; Permafrost; Earth and Environmental Sciences;

    Sammanfattning : The Arctic is warming at a rate two to three times that of the global average. Although only covering a small area of the globe, it is a vital component of the climate system. Through climatic feedback effects the warming is enhanced, and risks leading to further climate change. LÄS MER

  3. 22. Värmeöverföring och odling i bergrum

    Kandidat-uppsats, KTH/Energiteknik

    Författare :Erik Ljungberg; Josefin Franzén; [2020]
    Nyckelord :;

    Sammanfattning : Det här projektet är gjort som kandidatexamensarbete inom hållbar energiteknik på KTH vårterminen 2020. I dagens samhälle ställs höga krav på butiker och odlare att alla typer av färska grönsaker, örter och frukter ska finnas tillgängligt året om, oavsett säsong eller klimat. LÄS MER

  4. 23. The potential disturbance of the 210Pb profile in peat cores by roots and the implications for 210Pb dating.

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

    Författare :Nora Spjut; [2020]
    Nyckelord :Permafrost thaw; 210Pb dating; and Dwarf shrub roots;

    Sammanfattning : At this moment there is a gap in information regarding the affect roots might have on 210Pb distribution in peat cores and in turn the obtained chronologies by 210Pb dating. Therefore, four peat cores were collected from the snow manipulation study site within the mire complex Storflaket (68°20048″N, 18°58016″E). LÄS MER

  5. 24. Movement of Foxfonna rock glacier in Svalbard between 2017-2019

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Elias Lundström; [2020]
    Nyckelord :rock glacier; Svalbard; UAV; photogrammetry; movement detection; permafrost; Earth and Environmental Sciences;

    Sammanfattning : The movement of a rock glacier located at the bottom of the Foxfonna glacier, Svalbard, Norway, was studied through the use of photogrammetry and feature tracking software, between the years of 2017-2019, as well as elevation changes between 2009 and 2019. This could aid in further knowledge about the rapid velocity changes of rock glaciers in a continuous permafrost environment. LÄS MER

  7. 25. Snow insulation effects across the Arctic : evaluating a revised snow module in LPJ-GUESS

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Alexandra Pongrácz; [2019]
    Nyckelord :active layer depth; Arctic; LPJ-GUESS; snow; soil temperature; Earth and Environmental Sciences;

    Sammanfattning : The effect of future changes in temperature and precipitation patterns on arctic ecosystem functioning is often assessed using state-of-the-art ecosystem models. Many models however lack detailed representation of wintertime processes, as pointed out by recent studies (Wang et al. 2016, Slater and Lawrence 2013). LÄS MER