Sökning: "geomorphology"

Visar resultat 1 - 5 av 107 uppsatser innehållade ordet geomorphology.

  1. 1. Eoliska avlagringar och vindriktningar under holocen i och kring Store Mosse, södra Sverige

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Tim Bjermo; [2019]
    Nyckelord :Store Mosse; optiskt stimulerad luminiscens OSL ; kvartsdatering; flygsand; eoliska dyner; holocen; fjärranalys; LiDAR; optically stimualted luminiscence OSL ; quartz dating; aeolian sand; aeolian dunes; Holocene; remote sensing.; Earth and Environmental Sciences;

    Sammanfattning : Eoliska sanddyner är en sällan undersökt resurs ur ett paleoklimatperspektiv. Genom att undersöka dynernas geomorfologi och strukturer kan de klassificeras som olika dyntyper. Eoliska sanddyner kräver speciella omständigheter och förutsättningar för att bildas och agerar värdefulla klimatarkiv för de tidperioder då de avsatts. LÄS MER

  2. 2. Soil organic carbon storage, distribution and characteristics in two contrasting permafrostaffected environments : Evaluating the role of alpine and lowland tundra areas in the permafrost carbon feedback

    Magister-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Didac Pascual; [2018]
    Nyckelord :soil organic carbon; permafrost; tundra; alpine; climate change; feedback; mapping; landcover; landform;

    Sammanfattning : An important portion of the large northern permafrost soil organic carbon (SOC) pool might be released into the atmosphere as greenhouse gases following permafrost thawing and subsequent SOC decomposition under future warming conditions, resulting in a warming amplification known as the permafrost carbon feedback. Improved knowledge about the amount, composition and distribution of the permafrost SOC pool is essential when assessing the potential magnitude and timing of the permafrost carbon feedback. LÄS MER

  3. 3. Different generation of controlled moraines in the glacier foreland of Midtdalsbreen, Norway

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Xavier Allègre; [2018]
    Nyckelord :Glacial sedimentology; glaciology; geomorphology; palaeoenvironmental reconstruction;

    Sammanfattning : A series of small mounds (< 3m) were sampled in the foreland of Midtdalsbreen outlet glacier, southern Norway. These landforms were interesting, especially at site number 1 because they were located very close to a higher Little Ice Age (LIA) moraine (> 5 m), thereby informing the dynamic of the glacier after the LIA at this location. LÄS MER

  4. 4. A Risk Assessment Analysis : The risk of saltwater intrusion into freshwater wells and the effects of a futuresea level rise on the Baltic Sea island of Öland

    Kandidat-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Marcus Eriksson; [2017]
    Nyckelord :Saltwater intrusion; well salinization; sea level rise; groundwater; Öland; risk assessment; GIS-analysis;

    Sammanfattning : Freshwater is essential for a functional society and the human well-being. However, it should not be taken for granted. Freshwater aquifers in coastal are subject to current and future risk of becoming saltwater contaminated – reaching a tipping point. Freshwater security on islands is vulnerable. LÄS MER

  5. 5. Acoustic survey of sea floor features in Asköfjärden

    Kandidat-uppsats, Stockholms universitet/Institutionen för geologiska vetenskaper

    Författare :Kim Lundmark; [2017]
    Nyckelord :Marine Geology; Marine Geophysics; Multibeam; Sub-bottom Profiler; Stockholm Archipelago; Geomorphology; Baltic Sea; Gas Seeps; Methane Gas; Fluid Migration; Groundwater; Acoustic Units; Sediment Profile;

    Sammanfattning : Marine geological surveys in Asköfjärden in the southern Stockholm Archipelago hasrevealed step like features in the sediments on the Baltic sea floor. The aim of this project is toanalyse the steps and possible formation processes from the survey data. LÄS MER