Search for dissertations about: "Lava fields"

Found 4 swedish dissertations containing the words Lava fields.

  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. Volcanism at the tip of a propagating rift : the Heimaey volcanic centre, south Iceland

    Author : Hannes B. Mattsson; Armann Höskuldsson; Alasdair Skelton; Sigurdur Steinthorsson; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geology; Volcanology; Petrology; Heimaey; Vestmannaeyjar; Propagating rift; Phreatomagmatic; Diatreme; Tumuli; Earth sciences; Geovetenskap;

    Abstract : Primary magmas are generated by 4-6% partial melting near the garnet-spinel stability fields beneath Heimaey (i.e. 80-65 km depth). The magmas fractionate 31% olivine and clinopyroxene en-route to ponding at the base of the crust (and forming a parental Vestmannaeyjar magma). READ MORE

  5. 3. Post-Svecokarelian geologic evolution in central Sweden, with special emphasis on burial metamorphism

    Author : Jan Olov Nyström; Stockholms universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Granitoids and associated volcanics, postorogenic in relation to the Svecokarelian orogeny ending at ca. 1800-1750 Ma, constitute a belt in central Sweden. READ MORE

  6. 4. Towards Enabling Exploration of Planetary Subterranean Environments using Unmanned Aerial Vehicles

    Author : Akash Patel; George Nikolakopoulos; Savvas Loizou; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Robotics and Artificial Intelligence; Robotik och artificiell intelligens;

    Abstract : This thesis presents a novel navigation framework established to enable the exploration of planetary subterranean areas with Unmanned Aerial Vehicles (UAVs). The key contributions of this thesis work form a robot-safe rapid navigation framework that utilizes a novel bifurcating frontier-based exploration approach. READ MORE