Sökning: "glacier velocity"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden glacier velocity.

  1. 1. 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

  3. 2. Ash distribution and cavities in Icelandic glaciers, a marker for snow accumulation and radar signal velocity change

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Andrea Håkansson; [2020-01-15]
    Nyckelord :Iceland; GPR; CMP; Glacier; Vatnajökull; Háabunga; Langjökull;

    Sammanfattning : Glaciers in the geologically active Iceland has a high scientific as well as touristic value. In this thesis, the two largest glaciers on Iceland have been studied with GPR to find if the method is suitable to use in future glaciolocial studies where accumulation patterns and similar attributes are in focus in a world of deglaciation. LÄS MER

  4. 3. Movement of Foxfonna rock glacier in Svalbard between 2017-2019

    Kandidat-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Elias Lundström; [2020]
    Nyckelord :rock glacier; Svalbard; UAV; photogrammetry; movement detection; permafrost; Earth and Environmental Sciences;

    Sammanfattning : The movement of a rock glacier located at the bottom of the Foxfonna glacier, Svalbard, Norway, was studied through the use of photogrammetry and feature tracking software, between the years of 2017-2019, as well as elevation changes between 2009 and 2019. This could aid in further knowledge about the rapid velocity changes of rock glaciers in a continuous permafrost environment. LÄS MER

  5. 4. Periglacial and glacial landform mapping in the Las Veguitas catchment, Cordillera Frondal of the Andes (Argentina).

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Eirini Makopoulou; [2018]
    Nyckelord :Geomorphological map; thermokarst lakes; glaciers; GIS; Argentinian Andes; spatial and temporal analysis;

    Sammanfattning : The semi-arid and arid Andes of South America are characterized by large areas with glacial and periglacial environments. This study focusses on the distribution of glacial and periglacial landforms in the Las Veguitas catchment, Cordillera Frontal, Argentina. LÄS MER

  7. 5. 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