Examinando por Materia "Landforms"

Mostrando 1 - 10 de 10
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    Cambios morfológicos históricos en los fondos del prodelta del río Magdalena, sector Bocas de Ceniza, Costa Caribe de Colombia
    (Universidad EAFIT, 2017) Madrid Montes, Diego Alexander; Correa Arango, Iván Darío; Paniagua Arroyave, Juan Felipe
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    Caracterización y zonificación de susceptibilidad por movimientos en masa, en la Cuenca la Quebrada La Ayurá: Tramo Cerros Astilleros- Parque Ecológico el Salado, Municipio de Envigado: Antioquia
    (Universidad EAFIT, 2017) Naranjo González, Ximena; Gutiérrez Rojas, Yorelys Andreína; Naranjo Guarín, Jafed; Correa Ocampo, Luis Gabriel
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    Diseño y construcción de una máquina interactiva que ilustre la formación de las dunas en el desierto para el Parque Interactivo Explora
    (Universidad EAFIT, 2007) Amaya Sepúlveda, Alejandra; Gómez Marín, Elisa; Aristizábal Restrepo, Sergio
    En este proyecto se muestra el desarrollo de una máquina interactiva para la sala Colombia Geodiversa del Parque Explora, teniendo en cuenta el fenómeno geomorfológico de la formación de las dunas en el desierto -- Este proyecto surgió con el objetivo de desarrollar una máquina interactiva que ilustre de manera lúdica el fenómeno de la formación de las dunas -- La experiencia estará dirigida a los usuarios de museos interactivos entre los 10 y 17años de edad -- Dunar es la máquina que ilustra la formación de Las DUNAS, mostrando el resultado de una gran acumulación de arena, presentando ondulaciones producidas por la interacción de elementos naturales como la corriente costera, el oleaje y el viento, creando así diferentes tipos de DUNAS como: Duna Lateral -- Duna de Estela -- Duna Transversal -- “Dunar” como su nombre lo indica nace de la palabra dunas, las cuales se refieren a comunidades vegetales y plantas que prosperan en los suelos arenosos móviles de las dunas a las cuales ayudan a fijar -- En nuestros territorios, tales montículos de arena movidos por el viento existen más que todo en las playas y en zonas litorales -- Este fenómeno genera en las personas atracción por el enigma que la palabra produce y crea expectativa acerca de la explicación de dicho fenómeno -- La finalidad del proyecto es diseñar y fabricar un modelo funcional, con un alto nivel de exigencia en la calidad y el diseño, logrando captar la atención del usuario, permitiendo que se divierta y transmitiendo conocimiento mediante la interacción del usuario con la experiencia acerca de los desiertos colombianos y lo que allí ocurre -- El desarrollo de este modelo surgió de la necesidad del proyecto que desarrolla la Universidad EAFIT junto con el Parque EXPLORA para desarrollar experiencias para el museo que expliquen fenómenos naturales
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    Historical and recent shore erosion along the Colombian Caribbean Coast
    (COASTAL EDUCATION & RESEARCH FOUNDATION, INC., 2005) Correa-Arango, Ivan D.; Alcántara-Carrió, J; González R., D.A; Universidad EAFIT. Departamento de Geología; Ivan D. Correa-Arango (icorrea@eafit.edu.co); Ciencias del Mar
    The analysis of historical charts, aerial photographs, satellite images and fieldwork provides a general picture of the magnitudes, rates and some of the possible causes of the main shoreline changes occurred along the littoral since 1794 until present. Net littoral accretion took place mostly on localized deltaic zones, but cliff and beach retreat has been by far the dominant trend in this coast, particularly along the coastline to the south of Sierra Nevada de Santa Marta. Data concerning the Guajira Peninsula and Sierra Nevada de Santa Marta shores suggest a coastline retreat of 20-30 m in the last century, while for the southern Caribbean, between the Magdalena delta and the Gulf of Urabá, accurate charts of XVIII-XIX centuries evidence littoral retreat up to 12 km and maximum rates of erosion up to 40 myr-1 at some areas. Shore erosion and consequent flooding along the Caribbean coast of Colombia had induced important land losses, both in non-developed and developed areas, and is impacting severely the infrastructure of all the inhabited littoral sectors. Available data for the most critical areas demonstrates that natural instability and/or pre-existing erosive trends are facilitated by soft lithologies and were dramatically accelerated in the last eight decades by intensive human interventions, including the chaotic building up of hard rock coastal defenses, the diversion of low river courses and the intensive beach and river sand extraction.
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    Inventario detallado para la gestión y conservación de los recursos geológicos y geomorfológicos entre los municipios de Belmira y Entrerríos, Antioquia, Colombia
    (Universidad EAFIT, 2016) Ramírez Calderón, Miguel Ángel; Marín Cerón, María Isabel; Tavera Escobar, Miguel Ángel
    Geological inventories are an essential tool for knowledge and appropriation of geological resources of a particular region -- In this project is proposed the application of a methodology for identifying, cataloging, and georeferencing of -geosites in the Central Cordillera of Colombia, specifically in the region of Belmira and Entrerríos municipalities -- This is a region that integrates high and middle mountain systems -- It aims to create an input for management and decision making locally
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    Notas geográficas y geológicas
    (Imprenta Nacional, 1926) Lleras Codazzi, Ricardo
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    Preliminary geochemical study of thermal waters at the Puracé volcano system (South Western Colombia): An approximation for geothermal exploration
    (Universidad Industrial de Santander, 2018-01-01) Gómez-Díaz E.; Marin-Cerón M.I.; Gómez-Díaz E.; Marin-Cerón M.I.; Universidad EAFIT. Departamento de Ciencias; Geología Ambiental y Tectónica
    The Puracé Volcano is located in the Cauca department, SW of Colombia, along the Coconucos volcanic chain. This volcano is an interesting target for geothermal exploration, because it is a young caldera-type volcano, with thermal activity (e.g. hot springs and fumaroles). Using hydro-geochemical analyses of hot springs, we determine the type of water, origin and relation with the geothermal system, reservoir temperature, mixing process and finally the potential areas for future exploration. The analyzed water-types are bicarbonate, dilutechloride, sulphate-chloride, acid-sulphate and heated steam-acid sulfated. The conservative elements, allow to identify the correlation between different springs and to infer commune sources. Moreover, the applied solutes geothermometers for each suitable thermal-water group were used to estimate the reservoir temperature. The Silica geothermometers resulted within a range of 120°C -170°C while those the Cation geothermometers are above these temperatures reflecting values from 160°C to 220°C. However, the Cation geothermometer of low temperature clearly identify another zone of lower temperature. Mixing and recharge processes, were identified through of stable isotopes. Finally, the preliminary geothermal model shows two zones of high enthalpy system ( > 150°C). © 2018, Boletín de Geología.
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    Seven good practices for the environmental licensing of coastal interventions: Lessons from the Italian, Cuban, Spanish and Colombian regulatory frameworks and insights on coastal processes
    (Elsevier Inc., 2018-11-01) Pereira, C.; Botero, C.M.; Correa, I.; Pranzini, E.; Universidad EAFIT. Departamento de Geología; Ciencias del Mar
    Environmental licensing is the regulatory procedure that enforces the environmental impact assessment (EIA) of human activities inside a given country. Despite worldwide acceptance of EIA as a valid tool, its application in coastal environments is still too diverse and limited regarding the specificity of the natural processes influencing the shore. This paper compares the Environmental Licensing Procedure (ELP) of four countries, focusing on the activities that could affect the coastal geomorphology. The acquisition and validation of information were done through interviews with EIA representatives in each country, who signalized the official documents of environmental licensing and coastal management to be considered in the documentary review. The results present those differences and similarities among ELP stages in each country, based on the principles of the International Association of Impact Assessment and the national documents analyzed. In sum, 59 interventions associated with human uses and activities in the coastal zone were compared according to the prescriptive character of the environmental licensing in Italy, Spain, Cuba and Colombia. The natural processes influencing coastal geomorphology were also analyzed within the technical criteria included in the official guidelines for the EIA, finding a generalized weakness in processes associated with geochemical courses on coastal environments. By way of discussion, seven good practices are illustrated, according to their pertinence to the impact assessment of the coastal zone: 1) The integration of screening and scoping; 2) Evaluation focusing on the environment rather than the intervention; 3) Binding the coastal zone delimitation; 4) Institutional articulation; 5) Accreditation of environmental consultancies; 6) Official guidelines by types of environment; 7) The integration of environmental geographic information. Finally, general conclusions to assist EIA practitioners operating in the four countries and recommendations to lead further research are provided, introducing a novel process-oriented approach for ELP. © 2018 Elsevier Inc.