Search for dissertations about: "Hekla area"

Found 3 swedish dissertations containing the words Hekla area.

  2. 1. Vegetation on lava fields in the Hekla area, Iceland

    Author : Ágúst H. Bjarnason; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Växtgeografi - Island; Lava fields; Iceland; Hekla area; Tephra;

    Abstract : .... READ MORE

  4. 2. Tree-limit ecotonal response to Holocene climate change in the Scandes Mountains of west-central Sweden

    Author : Jonas Bergman; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; tree-limit ecotone; alpine vegetation; tephrochronology; peat humification; plant macrofossils; Palaeobotany; fylogeni; Paleobotanik; palynology; phylogeny; palynologi; Geologi; Geology; pedology; geomorphology; Physical geography; klimatologi; geomorfologi; climatology; Fysisk geografi; cartography; Holocene climate; palaeoecology; marklära; kartografi; pollen influx;

    Abstract : The aim of this thesis was to reconstruct the Holocene vegetational and climatic development in the Sylarna-Storulvån area, western Jämtland, in the central Scandes Mountains. Temporal trends and fluctuations in the elevation and vegetational character of the tree-limit ecotone were studied mainly by means of pollen and plant macrofossil analysis of two lake sediment sequences (Lakes Stentjärn and Spåime), located above the present-day tree-limit. READ MORE

  5. 3. Setting the Holocene clock using varved lake sediments in Sweden

    Author : Lovisa Zillén; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; climate change; Physical geography; tephrochronology; palaeomagnetic secular variations; radiocarbon time-scale; Holocene varved lake sediments; varve chronology; geomorphology; pedology; cartography; climatology; Fysisk geografi; geomorfologi; marklära; kartografi; klimatologi;

    Abstract : The aim of this thesis was to study annually laminated (varved) Holocene lake sediment in Sweden, their formation and their potential as chronological and palaeoecological archives. Five lakes with continuous Holocene varved lake sediment sequences in northern (Västerbotten) and west central Sweden (Värmland) were investigated. READ MORE