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Showing 1 to 20 of 26 for “"Fjords"”.
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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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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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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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Characterising Sikussak and Other Forms of Ice Melange in Greenland Fjords
… pro-glacial structures found in Greenlandic fjords, and the geographical location of these various structures is delimited using a fast-ice index based on the ratio between positive and freezing degree days. The primary controls affecting sikussak morphology are investigated, and a hierarchy …
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Multi-criteria wind energy siting assessment : a case study in the West Fjords
… for wind energy implementation in the West Fjords of Iceland based on eight criteria: diesel use, electricity use, population size, predicted power, icing, maximum potential generation input, expected power losses, and cost. A multi-criteria assessment method is used to systematically …
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Coastal meltwater plume detection and its response to melting variations around the Greenland Ice Sheet
… of monitoring runoff in rivers, lakes and fjords are in their infancy. Thus, there is a need to investigate new methods of observing meltwater losses. Preliminary studies have been conducted correlating measured meltwater discharge to different characteristics of plumes containing suspended …
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The Topography and Flow of the Antarctic Ice Sheet
… of basal sliding at the head of subglac ial fjords suggests a mechanism for the production of overdeepened fjords and steep headwalls through concentrated erosion. This may help in the reconstruction of the dynamics of former ice sheets. Some West Antarctic ice streams do not exhibit this …
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National parks as lifelong classrooms : a qualitative case study exploring visitors' dynamic learning experiences in America's national parks.
… their visit, and experiences when visiting Kenai Fjords National Park. The study utilized the contextual model of learning as the guiding framework to understand the learners' experiences through the personal, physical, and sociocultural contexts. The study included four different data sources …
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Submarine landforms and past ice flow in the Krossfjorden system, northwest Svalbard
… the continental shelf to the shallower inner fjords of the Krossfjorden system. This retreat was part of the Late Weichselian deglaciation of the northwestern part of the Svalbard-Barents Sea ice sheet. The bathymetric data from the innermost fjords and bays represent the advance and …
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Swimming sentinels : climate clues from stranded marine mammals
… to hundreds of enormous dead whales in the fjords of Chile, scientists have been recently puzzled by a spate of dead and dying marine mammals. These events are so complicated- influenced by disease, biotoxins, ecosystem changes, and human interaction-that their cause can appear impossible to …
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Population structure of Atlantic herring, Clupea harengus L., in the northeast Atlantic using phenotypic and molecular approaches
… collected from the Celtic Sea, North Sea and fjords, Baltic Sea, Norwegian Sea, Barents Sea, and Pacific Ocean (pacific herring, Clupea pallasi L.).The Truss morphometric method was very sensitive in detecting morphological differences, revealing significant differences among all discrete …
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Biogeochemistry of Metals in Fish Farm Sediments
… leading to major excavation (Skei et al. 2003). Fjords are found in all northern and southern regions of the earth that were once ice-covered, but this review will focus on the sea loch (fjordic) systems of western Scotland.
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Late Quaternary ice-ocean interactions in central West Greenland
… outlet glaciers were positioned within coastal fjords. Changes in the relative temperature of the West Greenland Current are determined “upstream” by wider scale changes in the North Atlantic region.
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The role of atmospheric and oceanic forcing in Greenland outlet glacier behaviour
… on sea ice concentration within the glacier fjords. At Helheim, glacier frontal position is seasonally sensitive to summer (JJA) air temperatures, likely as a result of meltwater enhancement of calving rates, although sea ice may also influence seasonal behaviour. At the interannual scale, …
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Inferring subglacial hydrology from investigations of supraglacial lake drainages and meltwater plumes at Store Glacier, West Greenland
… systems and discharge meltwater into adjacent fjords differently. However, studies of the subglacial hydrology of individual tidewater glaciers have been limited, largely due to the difficulty in obtaining direct measurements. The input of water to the subglacial drainage systems come from …
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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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Long Waves In Channels Of Non-Uniform Cross-Section
… distance propagation of landslide tsunami in fjords, travel-times and maximum wave heights can be rapidly estimated from one-dimensional governing equations, making the present theory suitable for warning systems.
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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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