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 45 for “"fjord"”.
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Gap winds in a fjord : Howe Sound, British Columbia
… the cold low level seaward flow of air through fjords which dissect the coastal mountain barrier of northwestern North America. These flows, occurring mainly during winter, can be strong, threatening safety, economic activity and comfort. Howe Sound gap winds were studied using a combination of …
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The Winds of Change: The effects of katabatic winds on fjord circulation, sea-ice export and glacier stability at Sermilik Fjord and Helheim Glacier
… of Greenland, can lead to large scale changes in fjord circulation, sea-ice export and glacier terminus stability, but despite this few studies have investigated their wider implications. In period of rapidly retreating tidewater glaciers, katabatic winds are known to aid retreat indirectly, …
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Lake and fjord sediments as Late Glacial to Holocene environmental and climate archives of the southernmost Andes at 53°S, Chile
… echo sounding sediment profiles in the fjords of the Gran Campo Nevado area. The stratigraphy of the sediment cores is based on 14C-AMS ages and tephrachronology. Sedimentological and geochemical characteristics were investigated in order to determine sediment sources and their pathways …
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Late Weichselian and Holocene Glacimarine Sedimentation and Environments in Kejser Franz Josephs Fjord and On The Adjacent Continental Margin, East Greenland
… and environments in the Kejser Franz Josephs Fjord and on the adjacent continental margin of East Greenland during the Late Weichselian and Holocene. A variety of techniques are adpoted in this study in order to address the objectives outlined previously. The study is based on a suite of 8 …
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Modeling Circulation Dynamics and Submarine Melt in Greenland Fjords
… Sheet drains to glacier beds, discharging into fjords hundreds of meters below sea level. The injection of meltwater at depth generates an upwelling plume that entrains warm ocean water as it rises along the terminus, increasing submarine melt and driving a fjord-scale exchange flow. However, …
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Dynamics of Greenland’s glacial fjords
Glacial fjords form conduits between glaciers of the Greenland Ice Sheet and the North Atlantic. They are the gateways for importing oceanic heat to melt ice and for exporting meltwater into the ocean. Submarine melting in fjords has been implicated as a driver of recent glacier acceleration; …
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Dynamics of Greenland's glacial fjords
Glacial fjords form conduits between glaciers of the Greenland Ice Sheet and the North Atlantic. They are the gateways for importing oceanic heat to melt ice and for exporting meltwater into the ocean. Submarine melting in fjords has been implicated as a driver of recent glacier acceleration; …
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Glacier-ocean interactions in shallow-silled fjords
Glacier-ocean interactions in shallow-silled fjords play a crucial role in the mass balance of marine-terminating glaciers and the transport of freshwater from the ice sheet to the ocean. Despite their importance, the complex dynamics of these systems, influenced by sill processes, freshwater …
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Mixing and circulation of meltwater outflow plumes in polar fjords
… emerging at the base of glaciers at heads of fjords. First, a numerical model is developed and simulations to show the use of such a model are presented. Field work to verify the model was carried out, and the results of these surveys are discussed in conjunction with other field data. …
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Numerical Modelling of Sediment Delivery from Tidewater Glaciers to the Marine Environment
Glaciated fjords are dynamic sedimentary environments with high deposition rates, thus providing high-resolution sedimentary records of deglaciation. This thesis introduces two numerical models, SedBerg and SedPlume, developed to simulate marine sedimentation from tidewater glaciers for the …
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Influence of meltwater on Greenland Ice Sheet dynamics
… surface velocities. Finally, I pair near-ice fjord hydrographic observations with modeled and observed subglacial discharge for the Saqqardliup sermia–Sarqardleq Fjord system. I find evidence of two types of glacially modified waters whose distinct properties and locations in the fjord align …
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Influence of meltwater on Greenland Ice Sheet dynamics
… surface velocities. Finally, I pair near-ice fjord hydrographic observations with modeled and observed subglacial discharge for the Saqqardliup sermia-Sarqardleq Fjord system. I find evidence of two types of glacially modified waters whose distinct properties and locations in the fjord align …
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Transverse Variability of the Flow and Density in Inlets of Southern Chile
… in response to external forcing. In Aysen Fjord (45.2°S) the mean flow showed a three layer structure that was consistent with up-fjord wind-induced exchange, while in Chacao Channel (41.8°S), the mean flow exhibited predominantly a lateral structure that featured sharp velocity shears. In …
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Acoustical characterization of glacierized fjords
… are no more pronounced than in glacierized fjords where massive glaciers meet the ocean. This underwater acoustic environment is significantly louder than other ice-covered environments. The abundant acoustic information, coupled with the difficulty performing measurements on or near glacier …
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Submarine landforms and past ice flow in the Krossfjorden system, northwest Svalbard
… extent of past ice flow in 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 …
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Building up the silver circle route : apprenticeship at Markaðstofa Vesturlands
… stay longer), connect the different towns of the fjord, and strengthen bonds between stakeholders.
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An Investigation into the dynamics of the ocean current system off southern Greenland
… that it is primarily driven by local fjord runoff. A high resolution regional<br/>modelling study supports these observations and suggests that the East Greenland<br/>Coastal Current is primarily the result of a bifurcation of the East Greenland Current<br/>in the vicinity of Denmark …
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A Glacial Sedimentary System in Northwest Spitzbergen
… record of climate change in Signedalen and Krossfjorden, northwest Spitsbergen, since the Late Weichselian glacial maximum, has been constructed using an integrated analysis of lacustrine, terrestrial and marine sediments. Thirty-four piston cores were taken from two series of linked lakes in …
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