Maestría en Ciencias de la Tierra (tesis)

URI permanente para esta colección

https://hdl.handle.net/10784/5431

Examinar

Mostrando 1 - 20 de 58

Advances and findings in geodiversity estimation with an emphasis on the potential of geosystem goods and services : Sierra Nevada de Santa Marta
(Universidad EAFIT, 2023) Zapata Herrera, Juan Fernando; Marín Cerón, María Isabel
Análisis de incertidumbre en las velocidades de intervalo y en la posición de reflectores obtenidas por migración preapilado en profundidad (PSDM)
(Universidad EAFIT, 2010) Becerra Bayona, Carlos Andrés; Agudelo Zambrano, William Mauricio
This work studies the interval velocity and reflector position uncertainty on seismic images obtained by Prestack Depth Migration (PSDM). For uncertainty estimation the velocity model should be the best possible one obtained using residual moveout migration velocity analysis techniques. The uncertainty estimation is based on the aperture migration analysis in the wavenumber domain and the diffraction angle for each point in the medium. Due to the migration velocity analysis is an inverse problem with infinite solutions, the uncertainty analysis would help to understand how interval velocity variations are.
Análisis de la calidad de la imagen sísmica en atributos 3D, al aplicar una nueva definición de Binning en la migración Kirchhoff pre-apilado
(Universidad EAFIT, 2011) Martínez Corredor, Robiel; González Álvaréz, Herling
Análisis de la calidad de la imagen sísmica en atributos 3D, al aplicar una nueva definición de binning en la migración Kirchhoff pre-apilado
(Universidad EAFIT, 2011) Martínez Corredor, Robiel; González Álvarez, Herling
Análisis de las anomalías de magnetismo del subsuelo marino en la zona comprendida entre el sur de la isla de San Andrés y el norte de la isla Cayos De Albuquerque, Colombia
(Universidad EAFIT, 2019) Oviedo Prada, Karem Cristina; Idárraga García, Javier
Análisis de sensibilidad en el diseño de parámetros de adquisición sísmica 3D3C para el Campo Tenerife
(Universidad EAFIT, 2010) Duarte Castro, María Teresa; Andrés E., Calle; Guevara, Saúl E.
Análisis estratigráfico y de proveniencia del miembro superior de la formación Amagá en lo sectores de La Pintada y Valparaiso (Cuenca Amagá, Andes Noroccidentales)
(Universidad EAFIT, 2013) Páez Acuña, Liliana Andrea
Análisis estructural y cronología de la deformación del área de Upar : Valle Superior del Magdalena
(Universidad EAFIT, 2017) García Mateus, Ivonne Natalia; Marín, María Isabel
Análisis hidroestructural y estimación de recarga potencial por precipitación de la dunita de Medellín, sistema acuífero del valle de Aburrá
(Universidad EAFIT, 2021) Patiño Rojas, Sandra Maria; Jaramillo Uribe, Marcela
Analysis of Atmosphere-Plant-Soil Interactions
(Universidad EAFIT, 2025) Revelo Aristizábal, Mauricio Felipe; Ruiz Restrepo, Daniel Felipe
Understanding the interactions between the atmosphere, vegetation, and soil is essential for addressing issues related to slope stability, water transfer, and thermal variability in geological media, particularly under changing climatic conditions. These interactions govern coupled processes in soils and rocks and have implications for geotechnical engineering, land management, and environmental sustainability. Vegetation plays a central role in regulating the soil's hydromechanical balance by promoting infiltration, reducing runoff, and providing reinforcement through root systems. This thesis investigates the Soil–Atmosphere continuum, with a specific focus on the role of vegetation. The document is structured into three chapters and three appendices, each contributing to a detailed analysis of the topic. Chapter 1 addresses the Soil–Atmosphere system from a thermo-hydro-mechanical perspective and develops two complementary approaches. The first examines the role of vegetation, emphasizing root geometry and reviewing current formulations reported in the literature. In addition, the importance of in situ geotechnical monitoring for studying the Atmosphere–Plant–Soil interface is discussed through case studies. Chapter 2 presents a methodology based on digital image processing to visualize and quantify root system architecture. This method yields geometric parameters that support interpretation in Plant–Soil applications and the evaluation of nature-based solutions. The chapter highlights the role of visual analysis as a bridge between theoretical concepts and observational data. Chapter 3 analyzes time series obtained from multisensor networks applied to Soil–Atmosphere interactions at three monitoring points with distinct climatic and geotechnical conditions. Vegetation variables are not included in these case studies. Spectral techniques such as the Wavelet transform and the Hilbert–Huang transform were applied to identify dominant periodicities and evaluate potential relationships among variables such as precipitation, soil moisture, temperature, and displacement. The analysis includes coherence estimation and Spearman correlation between intrinsic mode functions (IMFs) to examine temporal coupling among environmental variables at multiple scales. Appendix 1 presents the theoretical foundations of thermo-hydro-mechanical processes in porous media. Appendix 2 contains soil characterization data from a monitored site where vegetation was grown under natural conditions. Appendix 3 includes complementary visualizations of the time-series analysis, featuring the complete spectral decompositions.
Anisotropía sísmica acimutal inducida por la presencia de fractura : aplicación sobre datos sísmicos adquiridos en el anticlinal de Suesca, Cundinamarca, Colombia
(Universidad EAFIT, 2010) Aguilera Bustos, Joaquín Pablo; González Álvarez, Herling; Ecopetrol
Aplicación de metodologías de geoconservación en el desarrollo de nuevas estrategias para la apropiación social de las ciencias geológicas en el marco de iniciativas territoriales en Colombia
(Universidad EAFIT, 2018) Tavera Escobar, Miguel Ángel; Marín Cerón, María Isabel; Hermelin Bravo, Daniel
Aporte al conocimiento de la geología volcánica en las inmediaciones de la población de Río Blanco (Cauca)
(Universidad EAFIT, 2011) Téllez Arjona, Laura; Toro Villegas, Gloria Elena
In the western flank of the volcano Sotará, in the vicinity of the population of Rio Blanco, we identified eleven units of volcanic origin. While the observation Window is limited to deposits located in the middle of the volcano, western flank, characteristics petrographics and stratigraphic relationships to define at least two possible stages of evolution in the magma chamber. These steps would relate topossible processes of recharge and magmatic differentiation which are evident. Although complete information is needed to raise an evolutionary history of volcanism of volcano Sotará, here arises a hypothesis about the evolution of the study based on stratigraphic, petrographic and geochemical volcanic deposits located in the Rio Blanco area, that must be confronted with future.
Assessing the geodiversity, morphometrical diversity and sensitivity index in Nuquí – Chocó associated with human activities
(Universidad EAFIT, 2024) Ramírez Calderón, Miguel Ángel; Marín Cerón, María Isabel
Assessment of earthquake-induced landslides hazard in Quito, Ecuador
(Universidad EAFIT, 2018) Zapata Tapia, Marco Camilo; Acevedo Jaramillo, Ana Beatriz; Prieto Salazar, Jorge Alonso
Quito, the 2.7 million inhabitants growing capital of Ecuador, is placed in an active volcanic and seismic inter-Andean valley. The urban area is built on a 30 km long, 3 to 5 km wide, depression limited by volcanoes, to the east, and by a succession of elongated hills to the west. These hills are the geomorphological expression of the active, local, crustal, Quito fault system, QFS. Seismic hazard is therefore significant (Expected peak ground acceleration, PGA, as high as 0.6 g in hard rock for a 475-year period of return). The urbanization process has been conquering the steep hills, sometimes through and informal land development process, increasing the earthquake landslide risk to population, property and infrastructure. A first, formal, attempt to estimate seismic induced displacements in Quito slopes is presented here. Using updated neotectonic, geomorphological classification, previous landslides susceptibility studies, topographic, microzonation and geotechnical data, seismic induced displacements at 631 natural slopes in the city were calculated using the Bray and Travasarou (2007) equation. Five deterministic earthquake scenarios using two weather conditions (dry/rainy season) were analysed, and the corresponding earthquake induced landslides displacements maps were elaborated. Results highlight areas in which, regardless the seismic scenario, high and very high hazard is always generated, e.g. Pichincha hills, Machangara incision and San Antonio domes and hills. These zones should be considered as a priority to carry out mitigation and also more detailed studies. Areas that present moderate and low hazard in the majority of the seismic scenarios are: Atacazo hills, Panecillo dome and Tectonic uprising Quito-eastern hills. It is expected that maps presented become tools for urban planning and development of mitigation measures in Quito municipality.
Caracterización morfo-química y diferenciación del material particulado PM10-2.5 en el Valle de Aburrá (Medellín, Colombia)
(Universidad EAFIT, 2020) Rausch, Juanita; Jaramillo Vogel, David; Avellaneda Franco, José David; Duque Trujillo, José Fernando; Universidad EAFIT; Particle Vision
Caracterización petrográfica, geoquímica y geocronológica en rocas ígneas intrusivas de la cuenca Cauca-Patía (CCP), Departamento del Cauca, Colombia
(Universidad EAFIT, 2012) Jerez Heredia, Edith Katherine; Toro Villegas, Gloria Elena
South of Cauca-Patía basin, in Cauca department, Colombia, was sampled eleven bodies of Neogene intrusive rocks whose composition varies from diorite, granodiorite to granite. According to geochemical analysis, the samples exhibit calc-alkaline high-potassium, calc-alkaline and tholeitic affinity associated to granitoids type I. Geochronological data infer three events that have affected the area during Oligocene-Miocene, Lower Miocene-Middle Miocene and Upper Miocene, the latter correlates with the northern part of Cauca-Patía Basin. Intrusive igneous rocks coexist with Plio-Pleistocene volcanic rocks, that have had undergone several processes, but present chemical and mineralogical similarities. Key words: Cauca Patía Basin, granitoids; intrusive rocks.
Clasificación de puntos de agua mediante análisis hidroquímico y métodos de estadística multivariada en un sistema hidrogeológico dominado por rocas ígneas plutónicas y depósitos de vertiente
(Universidad EAFIT, 2022) Chavarria Arboleda, Laura; Jaramillo Uribe, Marcela
Datación por fotoluminiscencia de algunas formaciones superficiales del Llano de Ovejas, Cordillera Central, Antioquia
(Universidad EAFIT, 2007) García Londoño, Carolina; Hermelin Arbaux, Michel; Colciencias
Photoluminescence method allows the determination of the age of burial of materials with a range from 6 to 800 000 years under optimal conditions; the method is really important for the study of diverse quaternary formations. This work marks the first application of Photoluminescence (OSL- Optical Stimulated Luminescence) in Colombia. The objective is to contribute with the development of new dating techniques applied to Quaternary, and to create the Photoluminescence Laboratory at University EAFIT. At these laboratory samples were prepared and then shipped to Canada for dating at the AGE Laboratory of McMaster University in Canada.
Dinámica costera durante el Mioceno tardío - Plioceno temprano al norte del Cinturón Plegado Sinú - San Jacinto, Colombia
(Universidad EAFIT, 2021) Cárdenas Gómez, Claudia Patricia; Cárdenas Rozo, Andrés Leonardo; Rincón Martínez, Daniel Andrés

Examinar

Examinando Maestría en Ciencias de la Tierra (tesis) por Título

Resultados por página

Opciones de ordenación