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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 355 for “"Antarctica"”.
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Hacking Antarctica
Hacking Antarctica is an investigation focused on rendering aesthetic responses to Antarctica beyond normative representations of the sublime and the imperceptible. It is based on fieldwork in polar and subpolar areas over the last 9 years. At its core, the research uses Immanuel Kant’s Critique of …
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The tectonic evolution of Antarctica
… attempt to illustrate the tectonic evolution of Antarctica. Evidence is presented for at least three structural stages in the development of the Precambrian shield, though it is not as yet possible to delineate individual tectonic provinces within the shield area. From the late Proterozoic until …
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Quaternary grounding-line fluctuations in Antarctica
… in the Ross and Weddell Sea sectors of Antarctica over thousand- to million-year timescales, using cosmogenic nuclide analysis of glacial deposits and glaciated bedrock surfaces, ice-penetrating radar surveys, and numerical modeling of radar waveforms and ice flow. I have mapped and …
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Antarctica: A Geography of the Sacred
… and plate tectonics, the topography of Antarctica echoes these designs almost perfectly - the coastal regions and southern ocean corresponding to the picturesque outer ring or structure, the minimalist ice shelves and Polar Plateau corresponding the prayer/assembly hall as well as to the …
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Geophysical investigations of icebergs in Antarctica
One of the most important technical questions relating to iceberg transport are the causes of disintegration of the iceberg at sea. In order to obtain a better understanding of the factors involved in the response of icebergs to the environment, an automatic data collection platform was placed on a …
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Lacustrine biogeochemistry of the McMurdo Dry Valleys, Antarctica.
… biogeochemistry of the McMurdo Dry Valleys, Antarctica.
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Mid Cretaceous fossil forests of Alexander Island, Antarctica
Spectacular fossil trees and shrubs are preserved within fossil soils in their original growth positions in mid Cretaceous rocks on Alexander Island, Antarctic Peninsula. These fossils indicate that diverse forest communities grew upon the floodplain areas of Alexander Island during the Albian at a …
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Sub-Ice Relief and Geology of East Antarctica
… the sub-ice topographic configuration of Eastern Antarctica. Reduction and evaluation of profiles of ice/bedrock interface, combined with critically assessed results of previous geophysical and geological investigations, has allowed some interpretation of the geological structure and glacial …
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Environmental management in Antarctica using geographical information systems
… marine environmental management problems in Antarctica, emphasising the potential application of Geographical Information Systems (GIS). Rules for environmental management in Antarctica have been agreed within the Antarctic Treaty system (ATS) and in the 1991 Protocol on Environmental …
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Aerosol chemistry and air-snow transfer in coastal Antarctica
… sources of aerosol particles reaching coastal Antarctica, and the processes that control aerosol deposition to the snow surface and inclusion into the ice.<br></br><br></br>Daily collections of aerosol particles and surface snow samples were made from British Antarctic Survey base, Halley. …
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Characterization of Bacteria From the Sea Ice of Antarctica
Bacteria isolated from the sea ice of Antarctica were brought to Southwest Missouri State University for study. Using typical characterization methods, an attempt was made to classify these organisms. They are Gram negative psychrophiles with a tendency to form filaments. The members of one group …
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Frozen in Place: American Policy and Practice in Antarctica
… Chapter One traces the history of America in Antarctica until 1961, when the Antarctic Treaty came into force. Chapter Two describes tne development and operations of the U.S. Antarctic Program. Chapter Three dissects the connection between policies and issues. The Conclusion offers a …
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Airborne geophysical investigations of subglacial structure of West Antarctica
… structure and tectonic evolution of West Antarctica. An airborne geophysical survey in West Antarctica comprising simultaneous Radio Echo Sounding (RES) and magnetics was carried out over -1 M km$^{2}$ of the ice covered area. The collection and reduction of large volumes of RES and …
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Spectroscopic measurements of atmospheric trace gases at Neumayer-Station, Antarctica
This thesis presents a two years record of Differential Optical Absorption Spectroscopy (DOAS) observations of zenith scattered sunlight at the German Antarctic research station Neumayer (70°S, 8°W). The measurements of the atmospheric trace gases ozone, NO2, OClO, BrO, IO and O4 were performed …
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Tectono-thermal evolution of Gjelsvikfjella, Western Dronning Maud Land, Antarctica
East Antarctica is dominated by the East Antarctic Craton, which consists of fragments of Archaean continental crust surrounded by polydeformed orogenic belts (e.g. Maud Belt). The Maud Belt in Dronning Maud Land preserves a high-grade polyphase tectono-thermal history. This belt has traditionally …
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Patterns and drivers of seasonal land-ice-flow around Antarctica
… signals are limited over the grounded ice in Antarctica. Assessing the degree of seasonal ice-flow variability, and establishing a process-based understanding of the key environmental drivers responsible, are of critical importance for quantifying accurately the total volume of ice discharged …
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