La tesis estudia y analiza las coincidencias, discrepancias, continuidades y cambios de la política contrarrevolucionaria de los gobiernos virreinales de José Fernando de Abascal (1806-1816), Joaquín de la Pezuela (1816-1821) y José de la Serna (1821-1824), así como la composición social, la formación del ejército virreinal peruano y del Alto Perú y la posibilidad de ascenso social que la carrera militar otorgaba. Producto de la crisis política de la monarquía española, durante los años de gobierno de dichos virreyes se llevó a cabo el proceso independentista hispanoamericano dentro del cual el virreinato del Perú jugó un rol fundamental. En este sentido, la tesis reconstruye las relaciones sociales, económicas y políticas que hicieron posible la contrarrevolución por parte del gobierno virreinal. Asimismo, busca comprender la importancia y el rol desempeñado por el sur andino entre 1810 y 1826 y cómo, en determinadas oportunidades, terminó por decidir el futuro político del virreinato del Perú. Para la investigación, se utilizan fuentes documentales de archivos nacionales y extranjeros, las cuales han sido consultadas y cotejadas con las incluidas en la Colección Documental y complementadas con bibliografía especializada. / Tesis

California has one highly-coveted possession: the Bay-Delta, which is the second largest estuary in the United States. Today, tensions are higher than ever as Southern California continues to grow and demand water from the Delta, agriculture suffers from drought and less-than-promised water allocations, and aquatic life diminishes due to environmentally damaging processes like pumping and exporting of water elsewhere. This paper will examine the historic policies that have shaped how the Delta has been managed, their successes and failures, and current plans in discussion for continuing improvement of the Delta. The Bay-Delta Conservation Plan and the Sacramento-San Joaquin Valley Water Reliability Act (HR 1837) are the specific current plans presented and analyzed for potential effectiveness. Despite some of the promising suggestions in HR 1837 and the Bay-Delta Conservation Plan, the Delta will remain a problem in the 21st century until stakeholders from all perspectives compromise enough to enact a single, clear-cut solution.

The research focuses on analysis and subsurface imaging of siliciclastics rocks on steam-affected 3D poststack seismic data, merged from different vintages, from the Temblor Formation in the Coalinga heavy oil reservoir in the San Joaquin basin, California. The objective was identification, delineation, and demarcation of reservoir heterogeneities by seismostratigraphic and seismogeomorphic analysis. The proximity of the San Andreas Transforms greatly controlled basin evolution and caused substantial reservoir heterogeneity by changing the depositional environment from shallow marine to near-shore fluvial. Moreover, two unconformities dissect the reservoir interval. The seismic dataset exhibits erratic, distorted reflection strengths and amplitudes caused by steam-injection-aided production. A petrophysical analysis based on Gassmann fluid substitution suggests a 27% P-wave velocity decrease in steam-saturated intervals. Seismic to well log ties were problematic and vexing due to the resulting statics, wavelet changes, and line mismatches. Mapping and flattening on a deeper horizon, however, allowed mapping of the internal unconformities and well ties which were crucial for seismostratigraphic sequence identification. Visualization of seismic attributes brought out stratification patterns and two distinct, laterally and vertically extensive, porous, and interconnected facies tracts interpreted as incised valley fills and tidal-to-subtidal deposits as evidenced by bright, steam related amplitudes. Seismic attribute analysis, Geobody Visualization and Interpretation, and structure and isochron maps brought out two prominent channel-systems, recut and restacked in the central part of the area. These deposits were identified on seismic data and correlated to high-gamma coarsening-upward sands on logs and cores. The deeper one, shifting towards SSE with depth, lies between the Base Temblor and Buttonbed unconformities both in the southwestern and northwestern parts of the study area and is scattered in the western-central portion. The shallower one originates in southwestern corner below the Top Temblor unconformity shifts towards ESE-SE with depth, and runs nearly parallel to the Top Temblor unconformity. It cuts across the Valv unconformity in central part creating a channel incision, and follows the Buttonbed unconformity towards the north. The investigation segmented the reservoir into channels, non-channel bearing, and unconformity-bounded subunits which will allow the operator to improve steam injection and optimize placement of oil producing infill wells. / Ph. D.

La tesis estudia y analiza las coincidencias, discrepancias, continuidades y cambios de la política contrarrevolucionaria de los gobiernos virreinales de José Fernando de Abascal (1806-1816), Joaquín de la Pezuela (1816-1821) y José de la Serna (1821-1824), así como la composición social, la formación del ejército virreinal peruano y del Alto Perú y la posibilidad de ascenso social que la carrera militar otorgaba. Producto de la crisis política de la monarquía española, durante los años de gobierno de dichos virreyes se llevó a cabo el proceso independentista hispanoamericano dentro del cual el virreinato del Perú jugó un rol fundamental. En este sentido, la tesis reconstruye las relaciones sociales, económicas y políticas que hicieron posible la contrarrevolución por parte del gobierno virreinal. Asimismo, busca comprender la importancia y el rol desempeñado por el sur andino entre 1810 y 1826 y cómo, en determinadas oportunidades, terminó por decidir el futuro político del virreinato del Perú. Para la investigación, se utilizan fuentes documentales de archivos nacionales y extranjeros, las cuales han sido consultadas y cotejadas con las incluidas en la Colección Documental y complementadas con bibliografía especializada. / Tesis

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