Documentos de conferencia (Ciencias del Mar)

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Examinando Documentos de conferencia (Ciencias del Mar) por Materia "Climatic changes"

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    Predicción de las magnitudes de retroceso de algunos sectores acantilados de Antioquia en condiciones de ascenso del nivel del mar – Resultados para el sector de Arboletes
    (Sociedad Colombiana de Ingeniería, 2012-08-08) Paniagua, Juan F.; Correa-Arango, Ivan D.; Universidad EAFIT. Departamento de Ingeniería; Ivan D. Correa-Arango (icorrea@.eafit.edu.co); Juan Felipe Paniagua (jpaniag2@eafit.edu.co); Ciencias del Mar
    Sea-level rise related impacts are required for coastal management, especially within littoral fringes with active tectonics and presence of strategic ecosystems likewise Colombian southern Caribbean. “Worst” scenarios predict a sea-level rise for 2100 circa 2 m above level of 1990. Among this context, retreat magnitudes prediction of littoral cliffs of Antioquia, formed along several sectors by soft rocks, is a primary element for medium-large term planning of the region. Considering this, possible shoreline positions along three critical sectors within Antioquia’s coast for 50 years in the future are presented (Arboletes and Turbo towns) and Los Córdobas – Puerto Rey sector (Córdoba department). For the Arboletes sector, considered as the most critical based on population density and present infrastructure, results for 2059 indicate the following: 1) Assuming a constant sea-level rise rate of +2.32 mm/yr (present value), mean shoreline retreat to 2059 would be –64 m. 2) Assuming a sea-level rise rate of +7 mm/yr, mean retreat distances would be about 134 m. 3) Assuming a sea-level rise rate of +22 mm/yr, mean shoreline retreat distances would be 200 m. Mean shoreline retreat distances between 64 and 200 m to 2059 are related to primary magnitude impacts over present infrastructure of Arboletes sector (downtown structures, access roads from Montería and towards Necoclí towns) and also the associated marine inundation of natural drainages, primarily Jobo and Arboletes rivers. Similar results could be shown for the other sectors considered within this study