Sökning: "northern rock"

Visar resultat 1 - 5 av 68 uppsatser innehållade orden northern rock.

  1. 1. A Geophysical Survey of Northern Utö

    Master-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Nicole Flanders; [2023]
    Nyckelord :;

    Sammanfattning : A geophysical investigation on the northern part of Utö was carried out between 2020 and 2021 to asses the extent of the iron ore (BIFs) and the iron bearing sulfides that have been surveyed and mined in the past. The survey using analog field equipment combined magnetometry, gravimetry, susceptibility, leveling, density, and thin-section microscopy. LÄS MER

  3. 2. Utilizing wood ash to stimulate algal growth in mine waters from northern Sweden

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Katelyn Murphy; [2023]
    Nyckelord :acid rock drainage; acid mine drainage; controlled eutrophication;

    Sammanfattning : Acid rock drainage (ARD), caused by the oxidation of sulphide bearing minerals, continues to be an environmental impact of both closed and operational mines, leading to waters with low pH values and high metal concentrations (Park et al., 2019). LÄS MER

  4. 3. Evaluation of structurally controlled rockfall hazard for underground excavations in seismically active areas of the Kiirunavaara mine

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Manuel Alberto Fuentes Espinoza; [2023]
    Nyckelord :Structurally controlled rockfalls; rockfalls due to seismic shaking; sublevel caving; fork layout; Unwedge; wedge analysis; deterministic analysis; probabilistic analysis;

    Sammanfattning : Sublevel caving operations at great depths are subjected both to large stress concentrations that are redistributed as the mining front progresses and to mining-induced seismicity. This is the case for Kiirunavaara mine, Sweden’s largest underground mine. LÄS MER

  5. 4. Petrophysical Properties of Rocks in Central Kiruna Mining District, Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Simon Peter Dagbui; [2023]
    Nyckelord :Kiruna mining district; Common earth model; petrophysics; density; AMS; complex electrical resistivity; NRM; magnetization; IOA; Kirunavaara Mineralization;

    Sammanfattning : High economic and metallogenic significance of northern Norrbotten ore district in Sweden which hosts Kiruna mining district makes it a very important ore district in the world. Northern Norrbotten ore district contributes a combined 90 percent of iron production in Europe. LÄS MER

  7. 5. Carbon Capture and Storage : And the Possibilities in Sweden

    Kandidat-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Risha Chowdhury; Sofie Malmberg; [2023]
    Nyckelord :Bio-Carbon Capture and Storage Bio-CCS ; Carbon Capture and Storage CCS ; Carbon Capture and Utilisation CCU ; Carbon Dioxide CO2 ; Climate Change; Climate Policy; Costs regarding Carbon Capture and Storage; Direct Air Capture DAC ; Geological Storage; Greenhouse Gas es GHG ; Policy regarding Carbon Capture and Storage; Bio-Carbon Capture and Storage Bio-CCS ; Carbon Capture and Storage CCS ; Carbon Capture and Utilisation CCU ; Koldioxid CO2 ; Klimatförändring; Klimatpolitik; Kostnad för Carbon Capture and Storage; Direct Air Capture DAC ; Geologisk lagring; Växthusgas er ; Reglering för Carbon Capture and Storage;

    Sammanfattning : The Paris Agreement aims to limit global warming to 1.5 degrees Celsius, and Sweden has set a goal toreach net-zero emissions by 2045. Carbon Capture and Storage (CCS) is one method that can reducecarbon dioxide emissions. LÄS MER