Arquitecto / El Liceo Industrial de San Fernando pretende ser un ejercicio académico de una necesidad real, un proyecto existente en el Ministerio de Educación, este proyecto se enmarca en un debate a nivel nacional sobre cómo se entrega la educación en el país y cuáles son los pasos para una educación de calidad e igualdad.

Geógrafo / No autorizada para ser publicada en el Portal de Tesis Electrónicas de la U. de Chile.

Arquitecto / El borde costero es una unidad geográfica espacial de diversas características, Chile se constituye como un país netamente costero. Esto ha condicionado que existan diferentes y variados usos en los distintos puntos del territorio, los cuales tienen características únicas en cada ciudad ubicada frente al mar. En el caso de San Antonio, Puerto principal del país, esta característica es evidente, el puerto se ha apoderado de todo el espacio de borde costero, dejando a la ciudad apartada del mar y privatizando el espacio marítimo. Bajo esta perspectiva entonces se enmarca este proyecto de título, el cual busca ser un aporte, tanto a la problemática física de la ocupación del borde costero en San Antonio, como un aporte para el mejoramiento de la calidad de vida de los habitantes de la comuna que hoy en día esta mermada.

Arquitecto / No autorizada por el autor para ser publicada a texto completo

Memoria para optar al título de Arquitecto

The San Andreas fault forms the right lateral transform boundary between the North American and Pacific tectonic plates. At various locations along the San Andreas fault the geometry of the fault surface is much more complex than a straight, vertical, plane. The San Bernardino Mountain segment of the San Andreas fault, in the San Gorgonio Pass region has one of the most complex active fault geometries in southern California due to a left-stepping restraining bend in the San Andreas fault. The evolution of the actively faulting pass has created an intricate network of active and formerly active, dipping and vertical, three-dimensionally irregular fault surfaces. The purpose of this research is to gain a better understanding of the mechanics of the present day active fault geometry and the evolution in the San Gorgonio pass region, through numerical modeling. We use the three-dimensional Boundary Element Method modeling code Poly3D to simulate different fault configurations. We see that fault geometries that include geologically observed and inferred fault dips match geologic data more accurately than simplified, vertical faults in the San Gorgonio Pass region of the San Andreas fault. The evolution of the San Andreas Fault in the San Gorgonio Pass region over the past million years may follow the principle of work minimization in the Earth’s crust up until the present day configuration.

Arqueólogo

La presente investigación analiza el problema de la limitada autoridad del Gobierno Regional de San Martín (GORESAM) para contrarrestar la deforestación de los bosques amazónicos ubicados en el departamento de San Martín. Los datos recientes señalan que la deforestación acumulada para el periodo 2000-2013 alcanza más de 270,000 hectáreas. El objetivo de la presente investigación es visibilizar el proceso de transformación de una decisión de política regional –fortalecer la autoridad regional frente al proceso de deforestación- en acciones concretas, a partir de la creación y puesta en marcha de una Autoridad Regional Ambiental (ARA), a través de una reforma institucional entre el periodo 2009-2012. La pregunta de investigación es conocer las razones que impulsaron al GORESAM a tomar la decisión de fortalecer su capacidad institucional regional a partir de una reforma que tuvo como protagonista la creación y puesta en marcha de una organización en el periodo 2009-2012, denominada ARA. Las hipótesis analizadas fueron: (1) El proceso de toma de decisiones para la construcción, creación y diseño de la ARA tuvo dos elementos relevantes: Voluntad política para responder sistémicamente al problema de la deforestación y voluntad administrativa para ejecutar acciones que permitan la creación y puesta en marcha de la ARA, (2) El ARA permitió el empoderamiento de las políticas públicas regionales en el tema ambiental, la operación con relativa autonomía, la posibilidad de disponer de diversas fuentes de financiamiento, la capacidad de crear incentivos y desincentivos, y de coordinar con los otros niveles de gobierno, y (3) El proceso de creación y puesta en marcha de la ARA involucró el diseño de la propuesta -en términos institucionales y organizacionales-, la construcción de una base de actores -al interior y fuera del GORESAM- que apoyaran el proceso y las acciones para hacer realidad –materializar- la propuesta. Las conclusiones de la investigación señalan que (i) el rol del Presidente Regional, Cesar Villanueva, fue clave en el proceso de creación de la ARA pues otorgo la voluntad política e impulso la voluntad administrativa, (ii) que la ARA contó con las capacidades para ejercer la autoridad, y (iii) los actores desde el sector público y privado tuvieron un rol clave en la consolidación de la ARA. / Tesis

Five lithologic units, ranging in age from Middle Miocene to Recent, are defined on the basis of continuous seismic reflection profile records. Two of the units are Miocene sedimentary and volcanic rocks that have been truncated to form a major unconformity (post-orogenic surface) related to the most recent major tectonism of the region. The remaining units are post-orogenic unconsolidated sediments. The fault pattern offshore is generally related to that exhibited on the island. The pattern conforms to a wrench-fault system hypothesized by Moody and Hill (1956) modified by a general north-south tensional fracturing. The San Clemente Fault is assumed to be the primary wrench fault of the system. Anomalies in the thicknesses and the structure of the unconsolidated sediment and rock units tend to confirm the structural model. A canyon (Eel Ridge Canyon) off the west side of San Clemente Island appears to have been caused by pivotal faulting and erosion, and represents a boundary between different structural trends north and south. A prominent terrace around the island is postulated to have been wave-cut during and since the Late Pleistocene. The island has been tilted slightly to the west by Recent tectonism. A steep magnetic gradient off the east side of the island is considered the consequence of faulted volcanic flows comprising the island itself and a deep basic rock mass responsible for a large positive magnetic anomaly off the northwest side. Other magnetic anomalies reflect major structural trends. Earthquake epicenter data suggest a recent and possibly cyclical occurrence of fault activity in the northern Continental Borderland region and the study area. Fault offsets at the sea floor and earthquake epicenters along the San Clemente fault zone imply recent adjustments along the fault. Wrench-fault movement resulting from a simple shear or shear couple is considered to have caused the zone of brecciation along the San Clemente Fault and produced the fault-trace curvature so evident in a series of en echelon, northwest-striking major faults of the Borderland. Tensile release during periods of wrench-fault development has been a fundamental factor in the structural development of the Borderland basins. The entire structure of the Continental Borderland is believed to have developed by right-lateral movement along the series of wrench faults. These faults are believed to have resulted from a translation of force by sea-floor spreading originating on the East Pacific Rise in the Gulf of California region. This force is considered to have moved a northern Continental Borderland crustal plate westward by east to west release along major wrench faults bordering the north and south ends of this plate. Sediments, transported along channels developed along faults in the island block, were deposited in basins developed by faulting and folding of the pre-orogenic rocks. Transportation appears to have been by means of turbidity-current flows, sand flows, and slides. A maximum average depositional rate of 35 to 47 centimeters per 1,000 years is estimated for post-orogenic sediments. The following findings are suggested for inclusion in the Neogene history of the island: (1) the top 365 meters of Miocene andesitic lavas were deposited above sea level and tend to become slightly more basic in composition with depth; (2) subsidence of the island region and temporary sea-level stand(s) occurred after the deposition of the volcanic rocks, with possible periods of foundering to about the Late Pliocene; (3) emergence, lengthy subaerial exposure, and a period of partial submergence took place from about Late Pliocene through Early Pleistocene; (4) a north-south compressive force developed or recurred across the Borderland during Late Pliocene, developing the present northwest-southeast and east-west wrench-fault systems that have been intermittently active to the present time; (5) much of the present Borderland topography formed during the Pleistocene to Recent. / Graduation date: 1969

Thesis (Ph. D.)--University of Washington, 2006. / Vita. Includes bibliographical references (leaves 374-409).