Essays about: "permafrost"
Showing result 21 - 25 of 69 essays containing the word permafrost.
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21. Movement of Foxfonna rock glacier in Svalbard between 2017-2019
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : 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. READ MORE
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22. Snow insulation effects across the Arctic : evaluating a revised snow module in LPJ-GUESS
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : The effect of future changes in temperature and precipitation patterns on arctic ecosystem functioning is often assessed using state-of-the-art ecosystem models. Many models however lack detailed representation of wintertime processes, as pointed out by recent studies (Wang et al. 2016, Slater and Lawrence 2013). READ MORE
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23. Microbial community responses to freeze : thaw cycles in active layer soils of permafrost tundra, Disko Island, Greenland
University essay from SLU/Dept. of Soil and EnvironmentAbstract : Permafrost affected soils are a vast pool of Carbon, storing around 1300Pg below the ground. As a result of climate change, permafrost soils that have been frozen for thousands of years are thawing, causing the ancient organic matter to be metabolised by microorgan-isms. READ MORE
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24. Implications of a dynamic vertical root distribution for modelled water and carbon fluxes across selected ecosystems : incorporating a novel rooting scheme into LPJ-GUESS
University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapAbstract : Roots play a key role in terrestrial carbon and water cycles, and therefore for the global climate system. They mediate plant evapotranspiration, influence photosynthetic processes and are responsible for atmospheric carbon transport into the pedosphere. Fine roots, in particular, are chiefly regulating water and nutrient uptake. READ MORE
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25. Effects of Wildfire Burn on Permafrost Landcover and Catchment Hydrology in Manitoba, Canada
University essay from Uppsala universitet/Institutionen för geovetenskaperAbstract : Permafrost is a strongly controlling factor on Arctic hydrology due to its effect on ground permeability, and thus surface and ground water flow paths. As wildfires are increasing in occurrence and magnitude in permafrost regions, they may alter the hydrological regime via permafrost thaw and degradation that increases ground permeability. READ MORE