Global ETD Search
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Showing 1 to 20 of 40 for “"Azores"”.
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Overflows and upper ocean interaction : a mechanism for the Azores Current
… two trans-Atlantic zonal jets, analogous to the Azores current and the Azores Counter current. These two zonal jets are an extension of the topographic β-plume driven by the overflow. Because the eddies in the steep slope region near Cape St. Vincent drive a mean flow across the slope, the …
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Cultivating Lost Land: Livelihood and Depopulation on São Jorge Island, Azores
… of rural social life on São Jorge Island, Azores, examines the interconnections between depopulation, people’s practices of material livelihood, and their understandings of their overall historical and social condition. Following decades of transatlantic outmigration and demographic …
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The environmental and cost impacts of vehicle electrification in the Azores
… CO₂ emissions in São Miguel, an island in the Azores, while simultaneously reducing mobility operating costs. This thesis attempts to quantify the cost and environmental impacts of using EVs on São Miguel, using an economic dispatch and unit commitment model. The number of EVs and the ways that …
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Time-Optimal Path Planning in the Portugal-Azores-Madeira Ocean Region
… modeling and data assimilation in the Portugal-Azores-Madeira region of the Northern Atlantic, we compute time reachability sets and optimal paths, and examine the sensitivity to variations in vehicle type, speed, start time, voyage direction, and operating depths. Our study illustrates how …
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Overflows and upper ocean interactions : a mechanism for the Azores current
The oceanic response to overflows is explored using a two-layer isopycnal model. Overflows are a major source of the dense water of the global deep ocean, originating from only a few marginal seas. They enter the open ocean as dense gravity currents down a continental slope and play a crucial role …
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Towards a conservation strategy of the Roseate tern Sterna dougallii in the Azores Archipelago
… endangered seabirds in Europe. The mid-Atlantic Azores islands, Portugal, are an important breeding ground for this species, holding more than 50 per cent of the European population. EU directives are aimed at maintaining and enhancing the current range and breeding numbers of Roseate Tern in the …
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Matching energy storage to small island electricity systems : a case study of the Azores
… goals for renewable energy. For example, the Azores Islands of Portugal have set a goal to achieve 75% renewable energy by 2018. Despite significant environmental and economic benefits, however, the introduction of renewable energy sources introduces new operating challenges to island power …
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Population genetics and evolutionary history of some deep-sea demersal fishes from the Azores - North Atlantic
… fish species from the North Atlantic. In the Azores archipelago, the demersal fishery is the second most important after tuna and Helicolenus dactylopterus, Beryx splendens and Beryx decadactylus are among the most captured species. Partial sequences for the mitochondrial control region and …
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Characterising subaerial basaltic ‘a‘ā lava flows as potential geothermal reservoirs: Nordeste volcanic complex, Volcanic, São Miguel, Azores
… have been utilised. Specific to São Miguel, The Azores, there are plenty of geothermal manifestations in the form of hot springs and fumaroles, and one current geothermal power plant (Ribeira Grande) within the central volcanic complex of Fogo. Neighbouring this is the basaltic Nordeste volcanic …
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Diffuse Zones of Deformation in Oceanic Lithosphere: The Azores-Gibraltar Plate Boundary and the Davie Ridge - Madagascar Region
… occurring in oceanic lithosphere: namely, the Azores-Gibraltar plate boundary in the eastern Atlantic Ocean and the Davie Ridge-Madagascar region between the east African coast and Madagascar. Despite the slow rate of deformation, high levels of seismic activity are present in both regions. The …
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Seasonal and diurnal variability of wind and hydro energy sources on the Azores, Portugal and the effectiveness of utilizing energy storage to achieve maximum penetration
Thesis (S.M. in Technology and Policy)--Massachusetts Institute of Technology, Engineering Systems Division, Technology and Policy Program, 2011.
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Genetic analysis of the sperm whale (Physeter macrocephalus) using microsatellites.
… into the structure of populations around the Azores. To date, this work represents the most comprehensive molecular investigation into North Atlantic sperm whales. Since 1988 sloughed skin samples have been collected from the Azores but, to facilitate the comparison between local and global …
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Synoptic scale climatic forcing of multispecies fish recruitment patterns in Chesapeake Bay
… of two regional pressure patterns, the Azores-Bermuda and Ohio Valley high pressure systems, were found to account for a large portion of the CBASS pattern's variability. Spring conditions in March, brought on by an early appearance of the Azores-Bermuda High, favor recruitment of shelf …
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Growing up in Portuguese-Canadian families: an oral history of adolescence in Vancouver, 1962-1980
… of social and economic backgrounds in the Azores and Continental Portugal and one was born in Vancouver. This thesis examines aspects of their adolescence in the family, at school, at work, in friendship and courtship, as well as at church. Their lives in Vancouver often differed …
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The Encomienda in the Philippines: The Dawn of Spanish Colonialism
… line he drawn 100 leagues west of the Azores and the Cape Verde Islands; that Spain could claim all lands found or to he found West and South of the demarcation line towards the Indies, provided they had not been occupied by any other Christian prince." | The Bull also imposed on Spain …
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La sensibilidad de los acuíferos a los terremotos: el terremoto de Lisboa de 1755
… de Portugal conectadas con la falla de desgarre Azores-Gibraltar. De la distribución geográfica de los fenómenos hidrológicos, se observa que en el campo cercano e intermedio de la zona fuente del terremoto coexisten incrementos persistentes en el caudal de manantiales en rocas duras con …
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Visualizing and Understanding Tectonism and Volcanism on Earth and Other Terrestrial Bodies
… the Hawaiian-Emperor seamount chain, and the Azores triple junction. Some of these cases pose specific geophysical problems that were selected for further study.</p> <p>The Tonga Trench is a subduction zone that includes trench rollback and opening of a marginal basin—the Lau Basin. The …
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Future climate evolution in the canary current upwelling system from a regional coupled model
… region. The model simulations suggest that the Azores high is the main driver of these variations in winter, while in summer, the changes are attributed to the intensification of the Iberian thermal low along with an increase in mean sea level pressure over the British islands. This increase may …
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Chromosomal inversions and common quail diversification in Macaronesian archipelagos and the mainland
… characterized the common quail population in the Azores, the most geographically remote of these archipelagos, where this avian lineage has been evolving in isolation for a long time. Lastly, we generated a de novo common quail genome to characterize additional inversions and investigate whether …
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Design and optimization of microbial communities
… hydrothermal samples from the São Miguel Island, Azores, were analyzed to determine prokaryotic community composition to further reconstruct individual and community genome-scale metabolic models, and through simulation and design methods try to unveil possible routes to produce compounds with …
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