Search for dissertations about: "Hanna Ridefelt"

Found 3 swedish dissertations containing the words Hanna Ridefelt.

  1. 1. Spatial and Temporal Variations of Solifluction and Related Environmental Parameters in the Abisko Mountains, Northern Sweden

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Hanna Ridefelt; Jan Boelhouwers; Antoni Lewkowicz; [2009]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; solifluction; movement rates; Abisko region; Geographical Information Systems; statistical modelling; geomorphic work; permafrost; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi; naturgeografi; Physical Geography;

    Abstract : This thesis presents an assessment of the variation in solifluction occurrence, morphometry and movement rates in the Abisko region, northern Sweden. Variations in movement rates are analyzed both on a regional and local scale. READ MORE

  2. 2. The zoo-geomorphological impact of fossorial rodents in sub-polar alpine environments

    University dissertation from Uppsala : Kulturgeografiska institutionen, Uppsala Universitet

    Author : Bert Eriksson; Jan Boelhowers; John Östh; Hanna Ridefelt; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; zoo-geomorphology; fossorial rodents; sub-polar; alpine; geomorphic work; ecosystem engineers; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi; Geography; Geografi;

    Abstract : The geomorphological impact of small fossorial mammals (adapted to digging and living underground), such as rodents can be significant, and both their direct and indirect effects may contribute to landscape formation. This thesis is based on empirical field studies of two burrowing rodent species in sub-polar environments, namely invasive House mice (Mus musculus) on sub-Antarctic Marion Island and Norwegian lemmings (Lemmus lemmus) in sub-Arctic Abisko. READ MORE

  3. 3. Ground freeze-thaw, snow and roads in northern Sweden

    University dissertation from Uppsala : Kulturgeografiska institutionen, Uppsala Universitet

    Author : Maria Sarady; Eva Sahlin; Magnus Bohlin; Hanna Ridefelt; []
    Keywords : SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Ground freeze-thaw; snow depth; roads; northern Sweden; geography; Geography; Geografi;

    Abstract : In this thesis freeze-thaw along roads in northern Sweden is examined. The examinations are put in a context of changing climate and its amplification towards the Arctic region on earth. The research focuses on the impact of a warmer climate on ground freeze-thaw and in exten- sion road maintenance in the region. READ MORE