Sökning: "vulkaner"

Visar resultat 6 - 10 av 27 uppsatser innehållade ordet vulkaner.

  1. 6. Geothermal Potential of Sub-Volcanic Intrusions in a Typical Caldera Setting

    Master-uppsats, Uppsala universitet/Mineralogi, petrologi och tektonik

    Författare :Einar Bessi Gestsson; [2018]
    Nyckelord :sub-volcanic intrusions; thermometry; numerical modeling; geothermal energy; magmaintrusioner; termometri; numerisk modell; geotermisk energi;

    Sammanfattning : Sub-volcanic intrusions can form an extensive network of sills, dikes and other intrusion types that make up a plumbing system beneath volcanoes. Such intrusions are the heat source for high-temperature geothermal systems in volcanic areas and therefore, it is of great importance to study them in relation to geothermal exploration and production. LÄS MER

  3. 7. Estimation of Relative Seismic Velocity Changes Around Katla Volcano, Using Coda in Ambient Seismic Noise

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Frida Jonsdottir; [2018]
    Nyckelord :Katla volcano; Iceland; ambient seismic noise; coda waves; relative velocity variations; Katla vulkan; Island; omgivande seismiskt brus; codavågor; relativa hastighetsvariationer;

    Sammanfattning : Relative seismic velocity variations in the Earth’s crust can be estimated by using ambient seismic noise records from a pair of stations. Velocity variations can be caused by stress perturbations in the subsurface. Therefore, information on stress changes in the crust can possibly be retrieved from measured velocity variations in the medium. LÄS MER

  4. 8. Magmatic Sources and Processes Recorded by the Volcanics from the Izu Bonin Rear Arc

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :John Owen Edgar; [2017]
    Nyckelord :Izu-Bonin; plagioclase; magma; strontium; thermobarometry; rear arc; Izu-Bonin; plagioklas; magma; strontium; termobarometri; bakbåge;

    Sammanfattning : The Izu rear-arc volcanism was investigated by IODP EXP350 in spring 2014. A total stratigraphy of1800 m was drilled, and contains volcaniclastic material within tuffaceous mudstone. LÄS MER

  5. 9. Relationship Between Hekla’s Magmatic System and Its Eruptive Behavior

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Eric Andin; [2017]
    Nyckelord :Hekla; crystal mush; thermobarometry; magma storage depth; Hekla; kristallansamling; termobarometri; magmalagringsdjup;

    Sammanfattning : The southern part of Iceland incorporates two parallel volcanic zones, the Eastern Volcanic Zone and the Western Volcanic Zone. These two branches are connected by an E-W transform. Hekla is located close to intersection between the two plate boundaries. Hekla is one of Iceland's most active and explosive volcanoes. LÄS MER

  7. 10. Sensitivity studies on difficult cloud and fog situations for weather model

    Kandidat-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Förbränningsfysik

    Författare :Axel Stigborg; [2017]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Fog and clouds are difficult to predict for meteorologist today. Models have a tendency to show either too much or too little clouds or fog, which can be a problem for people and industries that depend on the weather conditions. Improvements are being done, but errors still occur. LÄS MER