Search for dissertations about: "Svalbard"

Showing result 6 - 10 of 35 swedish dissertations containing the word Svalbard.

  2. 6. Nitrate stable isotopes and major ions in snow and ice from Svalbard

    Author : Carmen Paulina Vega Riquelme; V. A. Pohjola; R. Pettersson; E. Isaksson; C. E. Bøggild; Kumiko Goto-Azuma; Uppsala universitet; []
    Keywords : nitrate stable isotopes; nitrate; NOx proxies; ice cores; percolation; ion relocation; Svalbard; stabila isotoper av nitrat; nitrat; indikator för kväveoxider; iskärnor; perkolation; joniska omlokalisering; Svalbard; Earth Science with specialization in Physical Geography; Geovetenskap med inriktning mot naturgeografi;

    Abstract : Increasing atmospheric reactive nitrogen (Nr), as consequence of human activities, has generated accumulation of nitrate (NO3-) in Arctic regions. The Arctic has fragile nitrogen limited ecosystems that can be altered by increases of dry or wet deposition of Nr. READ MORE

  4. 7. Dead-Ice Under Different Climate Conditions: Processes, Landforms, Sediments and Melt Rates in Iceland and Svalbard

    Author : Anders Schomacker; Kvartärgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; klimatologi; glacier; dead-ice; surge; ice-cored; Little Ice Age; fysisk geografi; Geologi; Geology; Svalbard; Iceland; Sedimentology; cartography; pedology; geomorphology; Sedimentologi; Physical geography; geomorfologi; marklära; kartografi; climatology;

    Abstract : Modern dead-ice environments in the glacier forefields of Brúarjökull, Iceland and Holmströmbreen, Svalbard were investigated with focus on landform and sediment genesis, as well as quantification of melting. Field monitoring and studies of multi-temporal aerial photographs, satellite imagery, and Digital Elevation Models (DEMs) provided data for the melting quantification. READ MORE

  5. 8. Precambrian and Caledonian history of Svalbard’s West Ny Friesland Terrane

    Author : Fredrik Hellman; Berggrundsgeologi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Geologi; physical geography; Geology; Detrital; Zircon; Svalbard; Caledonides; Spitsbergen; fysisk geografi; Petrology; mineralogy; geochemistry; Petrologi; mineralogi; geokemi;

    Abstract : This thesis deals mainly with age-investigations of metasedimentary and magmatic rocks of Ny Friesland, located in the northeastern Svalbard. However, the provenance of quartz-porphyry clasts in a Devonian conglomerate have also been investigated in northwestern Svalbard. READ MORE

  6. 9. The Northward Course of the Anthropocene : Transformation, Temporality and Telecoupling in a Time of Environmental Crisis

    Author : Eric Paglia; Sverker Sörlin; Nina Wormbs; Charles Parker; John McNeill; KTH; []
    Keywords : HUMANIORA; HUMANITIES; Anthropocene; Arctic; Fernand Braudel; environmental and climate crisis; environmental history; expertise; polar geopolitics; securitization; Svalbard; telecoupling; History of Science; Technology and Environment; Historiska studier av teknik; vetenskap och miljö; Statsvetenskap med inriktning mot krishantering och internationell samverkan;

    Abstract : The Arctic—warming at twice the rate of the rest of the planet—is a source of striking imagery of amplified environmental change in our time, and has come to serve as a spatial setting for climate crisis discourse. The recent alterations in the Arctic environment have also been perceived by some observers as an opportunity to expand economic exploitation. READ MORE

  7. 10. Tectonic evolution of NW Svalbard

    Author : Carl-Henrik Pettersson; Stockholms universitet; []
    Keywords : ;

    Abstract : .... READ MORE