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 21 for “"Western Antarctic Peninsula"”.
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Circulation of the Western Antarctic Peninsula: Implications for Biological Production
<p>The western Antarctic Peninsula (wAP) continental shelf is characterized by large persistent populations of Antarctic krill (<em> Enphausia superba</em>) and by regions of enhanced concentrations of marine mammals and other predators (hot spots). This study focused on understanding the role of …
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Wind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modeling
… of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern Ocean Global Ocean Ecosystems Dynamics program. In order to characterize the ice environment in the region, a novel methodology is developed for determining ice coverage, …
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Wind, sea ice, inertial oscillations and upper ocean mixing in Marguerite Bay, Western Antarctic Peninsula : observations and modeling
… of 2001-2003 within Marguerite Bay on the western Antarctic Peninsula (wAP) shelf were collected as part of the Southern Ocean Global Ocean Ecosystems Dynamics program. In order to characterize the ice environment in the region, a novel methodology is developed for determining ice coverage, …
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Fine-Scale Foraging Behavior of Humpback Whales Megaptera novaeangliae in the Near-Shore Waters of the Western Antarctic Peninsula
… novaeangliae) in the coastal waters of the Western Antarctic Peninsula during the austral autumn of 2009 and 2010. Discrete feeding events (i.e., lunges) were inferred from the biologging records of thirteen whales, including a mother and her calf. In general, humpback whales exhibited …
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Modeling Studies of Antarctic Krill (<i>Euphausia superba</i>) Survival During Transport Across the Scotia Sea and Environs
<p>The Antarctic krill (<em>Euphausia superba</em>) populations at South Georgia, which is in the eastern Scotia Sea, are hypothesized to be sustained by import of individuals from upstream regions, such as the western Antarctic Peninsula. To test this hypothesis a modeling framework consisting of …
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Estimation of Primary Production and Carbon Flux in Antarctic Coastal Waters: A Modeling Study
… carbon in continental shelf waters of the west Antarctic Peninsula (WAP) and Ross Sea. Simulation of the underwater light field required derivation of new coefficient sets for power function-type cloud cover correction algorithms, which were found to be influenced by multiple reflections between …
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Ocean circulation and dynamics on the west Antarctic Peninsula continental shelf
… States Southern Ocean GLOBEC program on the western Antarctic Peninsula continental shelf are used to characterize the ocean circulation and its connection to fresh water and heat fluxes on the shelf. Mean velocities on the shelf are of the order of 5 cm/s or less. Tidal motions are dominated …
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High-Resolution In Situ Oxygen-Argon Studies of Surface Biological and Physical Processes in the Polar Oceans
<p>The Arctic Ocean and Western Antarctic Peninsula (WAP) are the fastest warming regions on the planet and are undergoing rapid climate and ecosystem changes. Until we can fully resolve the coupling between biological and physical processes we cannot predict how warming will influence carbon …
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Ocean circulation and dynamics on the west Antarctic Peninsula continental shelf
… States Southern Ocean GLOBEC program on the western Antarctic Peninsula continental shelf are used to characterize the ocean circulation and its connection to fresh water and heat fluxes on the shelf. Mean velocities on the shelf are of the order of 5 cm/s or less. Tidal motions are dominated …
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The Role of Social, Economic, and Political Factors in the Design and Establishment of Antarctic Marine Protected Areas
… such as the Convention on the Conservation of Antarctic Marine Living Resources (CCAMLR), to manage human activity and ensure the long-term persistence of biodiversity by establishing large-scale networks of marine protected areas (MPAs). Conservation scientists have developed systematic …
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Remote sensing of penguin populations: Development and application of a satellite-based method
Five penguin species breed in Antarctica: emperors, Adélies, chinstraps, gentoos and macaronis. These are important Antarctic mid-trophic level predators and under predicted climate change are believed threatened. Accurate monitoring of populations is therefore of growing importance owing to the …
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Microbial responses to environmental forcing and implications for trophic transfer through the lens of lipidomics
… Subtropical Gyre (NPSG), and to light in the western Antarctic Peninsula (WAP). In the NPSG, I utilized lipid biomarkers to differentiate between cyanobacterial and eukaryotic signs of stress, in response to the passage of mesoscale eddies and their subsequent impact on ocean biogeochemistry. …
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Iodine in sea ice and the polar atmosphere.
… have been undertaken in both the Arctic and Antarctic. Ship-based measurements in the Weddell Sea have implicated I2 as a key species in the mechanism of enhancement of atmospheric iodine in this region. Organic and inorganic forms of iodine were measured in seawater, sea ice and the …
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Ecosystem impacts of variable recruitment in Antarctic krill investigated with long-term monitoring and archived ADCP backscatter data
… on the krill-reliant marine ecosystem of the western Antarctic Peninsula. I use long-term ecological monitoring data to examine the impact of highly variable krill recruitment on a krill predator population, and I use archived backscatter data from an Acoustic Doppler Current Profiler (ADCP) …
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Marine particle dynamics : sinking velocities, size distributions, fluxes, and microbial degradation rates
… the waters above the continental shelf of the Western Antarctic Peninsula (WAP). An underwater digital camera system was employed to capture images of particles in the water column. The subsequent analysis of these images allowed for the determination of the particle concentration size …
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Marine particle dynamics : sinking velocities, size distributions, fluxes, and microbial degradation rates
… the waters above the continental shelf of the Western Antarctic Peninsula (WAP). An underwater digital camera system was employed to capture images of particles in the water column. The subsequent analysis of these images allowed for the determination of the particle concentration size …
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A potential mechanism sustaining the biological hotspot around Palmer Deep Canyon
… (PDC) is a submarine canyon located along the Western Antarctic Peninsula. The region is considered a biological hotspot due to the high number of marine predators during the austral summer. The mechanisms that drive this hotspot, however, are poorly understood. Glider and satellite-based …
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Behavioral freeze avoidance in an Antarctic fish
Freeze avoidance is vital for the survival of Antarctic notothenioid fishes inhabiting the ice-laden waters of the high-latitude Southern Ocean. Most notothenioids avoid freezing primarily by the action of their blood-borne antifreeze glycoproteins (AFGPs). AFGPs arrest the growth of environmental …
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Physiological and metabolic characteristics of polar diatoms: insights into cold adaptation and potential for biotechnology
… In this project I conducted fieldwork in Antarctica to isolate several new Antarctic strains and used these alongside Arctic and Antarctic strains from culture collections to study whether physiological and metabolic characteristics are conserved between diatoms from the two regions. My …
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