Sökning: "permafrost"

Visar resultat 11 - 15 av 81 uppsatser innehållade ordet permafrost.

  1. 11. Post-IR IRSL dating of K-feldspar from Loess at Lowland Point, SW England : Developing a Chronology for Past Climate Records

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Elin Törnqvist; [2022]
    Nyckelord :loess; post-IR IRSL; Lowland Point; SW England; Quaternary; löss; post-IR IRSL; Lowland Point; England; kvartär;

    Sammanfattning : Loess deposits are terrestrial clastic sediments derived from aeolian deposition. Loess is transported in periglacial conditions and was mainly deposited in cold environments around glaciers during the Quaternary period. LÄS MER

  3. 12. Inferring runoff generation processes in a discontinuous permafrost catchment in northern Sweden using hydrometric, isotopic, and modeling methods

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Lena Bodeving; [2021]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 13. Influence of permafrost disintegration on wetland carbon fluxes in Abisko, Sweden

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

    Författare :Aida Esmailzadeh Davani; [2021]
    Nyckelord :Physical Geography; Ecosystem Analysis; Permafrost; CH4 flux; CO2 flux; Abisko; Wetlands; Earth and Environmental Sciences;

    Sammanfattning : The northern permafrost regions are experiencing a rapid warming as surface temperatures are rising, causing a disintegration of permafrost and a deepening of the active layer (AL). This releases previously frozen carbon, making it available for decomposition by microbes. LÄS MER

  5. 14. En resa tillbaka i tiden för att förstå framtiden : En undersökning av organiskt material i eoliska lössjordssediment på västra Grönland, Kangerlussuaq.

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Caroline Morin; Jessica Sundman; [2021]
    Nyckelord :Greenland; organic carbon; loss of ignition; loess; paleoclimate; Grönland; organiskt material; loss of ignition; lössjordar; paleoklimat;

    Sammanfattning : Today's changing climate on Earth makes climate research more important than ever. By providing an understanding of the Earth's history and in particular places where large-scale climate change is taking place, for example Greenland, can one get an understanding about how the Earth will react in the future. LÄS MER

  7. 15. Estimating active layer thickness at the high Arctic study site Zackenberg from remotely sensed ground subsidence

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

    Författare :Lotte Wendt; [2021]
    Nyckelord :active layer thickness; DInSAR; subsidence; permafrost; Zackenberg; CALM; Earth and Environmental Sciences;

    Sammanfattning : The active layer thickness (ALT) is an indicator of permafrost thaw, which potentially leads to the release of large amounts of greenhouse gases under global warming, and thus could further amplify climate change. The thaw depth of the active layer also governs seasonal surface deformation, caused by the volume change between ice to water, which poses risks for slope stability and infrastructure foundations. LÄS MER