Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 54 for “"Svalbard"”.
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SVALPEN Svalbard Radar Snow Penetration Experiment
Studying the extent and thickness of sea and glacial ice in a warming climate is important since they have both local and global significance in the form of feedback loops, climate effects, and ship transport, among others. While the extent of ice is well studied using satellite-based radar remote …
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Remote Sensing Studies of Svalbard Glaciers
… and dynamics of the ice caps of Nordaustlandet, Svalbard. Data collection, methods of reduction and errors are discussed. Three principal topics are examined. First, as a preliminary to comprehensive radio echo sounding operations over Nordaustlandet, the ability of 60 MHz radar equipment to …
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Investigation of Surge-Type Glaciers in Svalbard
… understood. Statistical analyses of glaciers in Svalbard have been used to identify characteristics which are related to surging. Field experiments were undertaken on Bjuvbreen, a small surge-type glacier in central Spitsbergen, to determine the dynamics and hydrology of the glacier during its …
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Radio Echo Sounding Studies of Svalbard Glaciers
… the radio echo sounding properties of Svalbard glaciers and to use these data to obtain information about the glaciological environment. Particular emphasis was placed on obtaining an understanding of the dielectric properties of the ice and reflecting boundaries present. These were …
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Stratigraphic and Geochemical Expression of Early Cretaceous Environmental Change in Arctic Svalbard
… presence of conifers and dinosaur trackways on Svalbard and other Arctic localities. However, isotopic evidence for cooling episodes, sequence stratigraphic evidence for interpreted glacio-eustatic sea-level falls, and the presence of more enigmatic deposits such as dropstones and glendonites …
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Knowing Misha the Polar Bear: Multi-naturalism, biography, and conservation in Svalbard.
… it explores the idea of ‘knowing polar bears’ in Svalbard. By this I refer to how, through a succession of different interactions within a dynamic actor-network, human actants come to understand Svalbard polar bears. I acknowledge that these encounters are not valueless, instead they are …
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Submarine landforms and past ice flow in the Krossfjorden system, northwest Svalbard
… the whole of the Krossfjorden system, northwest Svalbard. The results from this study confirm that ice extended out of the Krossfjorden system (to the shelf edge west of Svalbard) during the Late Weichselian glacial maximum. They also improve the understanding of the relative chronology of …
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Submarine Landforms and Late Quaternary Ice Flow in Hinlopen Strait, Northern Svalbard Margin
… a 70km long cross-shelf trough on the Northern Svalbard margin. During the last glacial period, this trough is thought to have been occupied by an ice stream which flowed north across the continental slope (Ottesen et al., 2007). This project is concerned with examining the submarine landforms …
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An investigation of metal contaminants in sediments of Arctic Svalbard: Inferences for sources and transport pathways
… specifically within the sediments of the Svalbard region, and the Barents Sea area, within the Arctic. Ten sediment cores were taken for analysis from three main fieldwork excursions. The cores were taken from three different environments; lacustrine, fjordic and marine. A comparison …
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Modelling the future mass balance of glaciated Northwest Spitsbergen, Svalbard for a range of socio-economic trajectories
Spitsbergen, Svalbard, is covered by approximately 22,000 km2 of glaciers, which are particularly sensitive to the enhanced global warming expected over the region (Nuth et al., 2010; Miao et al., 2014). Loss of these glaciers has global, regional and local implications. The study transiently …
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Multispectral classification and reflectance of glaciers: in situ data collection, satellite data algorithm development, and application in Iceland & Svalbard
… the largest range of facies (Midtre Lovénbreen, Svalbard & Langjökull, Iceland), optimal wavelengths for glacier facies identification are investigated with principal component analysis. Two linear combinations are produced which capture the vast majority of variance in the data; the first …
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Coccolithophores in high latitude and Polar regions: Relationships between community composition, calcification and environmental factors
… of the North Sea, the Norwegian Sea and the Svalbard Arctic region. Even though biological processes seemed to play a major role in shaping the saturation state (calcite) and pH of these regions, the carbonate chemistry of the freshwater sources (Baltic Sea, sea-ice melt, riverine input/ …
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Determinants of gemmae output in the liverwort Lophozia ventricosa
… of central Norway and in the arctic tundra on Svalbard. The population parameters investigated included colony size, colony shoot density, number of gemmae per shoot, proportion of gemmiferous shoots and gemmiferous shoot density. The gemmae output in a colony was calculated as the product of …
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Gas-generated fractures and methane venting in a deepwater Arctic setting
… from seafloor sediments in the Arctic (West Svalbard) have occurred from two million years ago until the present. During glacial-interglacial cycles, gas venting behavior in shallow water (< 400 m) close to the West Svalbard margin can be explained by gas hydrate dissociation due to pressure …
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