Sökning: "Lomonosovfonna"

Visar resultat 1 - 5 av 9 uppsatser innehållade ordet Lomonosovfonna.

  1. 1. Effects from Firn Density on Radar Derived Depth to Perennial Firn Aquifer, Lomonosovfonna, Svalbard

    Kandidat-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Daniel Estmark; [2022]
    Nyckelord :Perennial Firn Aquifer; Glacier; Svalbard; Mass balance; GPR; Lomonosovfonna; Flerårig firn akvifär; glaciär; Svalbard; massbalans; GPR; Lomonosovfonna;

    Sammanfattning : As the climate is changing, there are clear impacts on the mass balance of glaciers. A glacier can be defined as the result of sufficient accumulation, in the form of snow and rain, compared to its ablation, the different types of glacial loss, a balance that then determines the size of the glacier. LÄS MER

  3. 2. Surface crevasses on Svalbard: Spatial Distribution Analysis with Focus on the Lomonosovfonna Ice Cap

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Monika Hawrylak; [2021]
    Nyckelord :crevasses; spatial distribution; model; glacier velocity; Lomonosovfonna; Svalbard;

    Sammanfattning : Understanding the formation mechanics of glacial crevasses is crucial in a variety of glacial applications. Besides being a serious safety hazard during field campaigns, crevasses influence calving rates, mass balance, and the hydrological network of glaciers. LÄS MER

  4. 3. Spatial and Temporal Variations in a Perennial Firn Aquifer on Lomonosovfonna, Svalbard

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Monika Hawrylak; Emma Nilsson; [2019]
    Nyckelord :perennial firn aquifer; ground penetrating radar; Svalbard; Lomonosovfonna; flerårig firnakvifer; georadar; Svalbard; Lomonosovfonna;

    Sammanfattning : A firn aquifer is a type of englacial water storage that forms when surface meltwater fills up the pore space in porous firn. If the retention time exceeds one year the feature is regarded as perennial. The melt and accumulation rates as well as the available pore space determine the formation and extent of the firn aquifer. LÄS MER

  5. 4. Thermodynamics of the Subsurface of Glaciers with Insights from Lomonosovfonna Ice Field at Svalbard

    Kandidat-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Enise Shala; Caroline Svanholm; [2018]
    Nyckelord :temperature; glacier; refreezing; thermal conductivity; simulation; temperatur; glaciär; återfrysning; värmeledningsförmåga; simulering;

    Sammanfattning : Glaciers are important components of the Earth's environment and are mainly found in polar and high elevation areas. They are crucial for understanding the past, ongoing and upcoming environmental changes, relevant for fresh water supply, logistical and recreational purposes. LÄS MER

  7. 5. The 200-year history of nss-SO42- concentration in snow and ice from Lomonosovfonna, Svalbard

    Kandidat-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Maria Schoeps; Josefin Andersson; [2015]
    Nyckelord :Sulfate; nss-SO42-; ice-cores; glaciochemistry; Lomonosovfonna; Sulfat; nss-SO42-; isborrkärnor; iskemi; Lomonosovfonna;

    Sammanfattning : Environmental scientists use ice-core records to reconstruct past atmospheric conditions. Anthropogenic and natural sources of emissions can be traced when analyzing ions in the ice, which is included in the science of glaciochemistry. Sulfate is an excellent ion to use in these studies since it is traceable to these emissions. LÄS MER