Examinando por Materia "PLATAFORMA CONTINENTAL"
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Ítem 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 FelipeÍtem Combined beach - inner shelf erosion in short and medium term (Maspalomas, Canary Islands)(Faculty of Geology, Martí i Franquès, 2012-12-01) Fontán, A; Alcántara-Carrió, J; Correa-Arango, Ivan D.; Universidad EAFIT. Departamento de Geología; Ivan D. Correa-Arango (icorrea@eafit.edu.co); Ciencias del MarThe analysis of the accurate topo-bathymetric digital elevation model (DEM), the cartography of the submarine sedimentary cover and the monitoring of short (seasonal) and medium-term (2000-2009) morphological changes have permitted depicting the erosional trend in the short and medium-term of the Maspalomas sedimentary system. Short-term analysis showed intense sedimentary fluxes between the beaches and the inner shelf, and sedimentary exchanges with other sectors of the inner shelf, while the steep slope inner shelf fronting La Bajeta cape was identified as a sink area. In the medium-term the sediment budget showed high erosion of the supratidal and intertidal sectors of the beaches due to storm waves in the 2005-2006 winter, followed by accretion over the next four years, but which did not reach the initial sedimentary state. The inner shelf and subtidal sector of the beaches showed negative budgets in the short and medium-term. Interannual variability of the wave and wind regimes determines decadal beach erosion-accretion cycles, while long-term climatic change, evidenced at the study area by a decrease of trade winds and NE wave intensity in 2005, is expected to produce a possible increase of erosion at the El Inglés inner shelf and consequently a decrease in sediment inputs to the El Inglés beach and Maspalomas dune field. Finally, the influence of the geological heritage is depicted by the Fataga gully’s control of the present coastal morphology, and by the island relief control of the wind, waves and current directions in the study area.Ítem Wave Energy Flux Variability Along Continental Shelves of Compressional Margins : a Wave Climate Data-Driven Approach(Universidad EAFIT, 2021) Ramos-Chavarriaga, Esteban; Paniagua-Arroyave, Juan FelipeDominant dynamics of available wave energy dictate coastal gradients in alongshore sediment transport on continental shelves, where large-scale coastal features depend upon wave-induced sediment fluxes. We propose to study wave energy flux (P) variability from high-fidelity simulations of wave climate data, to classify the fundamental patterns of P into morphodynamical regimes, serving as a data-driven indicator for large-scale, and wave-induced coastal evolution. Additionally, we describe the variability of P in a complex system framework to produce a reduced-order model (ROM) of the system of interest. Where we discover, reduce, and solve a symbolic expression that forecasts the spatial variability of P along continental shelves, balancing accuracy, and complexity to obtain a parsimonious model of reality.