Examinando por Autor "Paniagua, J."
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Ítem Beach Management Practices and Occupation Dynamics: An Agent- Based Modeling Study for the Coastal Town of Nags Head, NC,USA(Springer, 2017-12-05) Karanci, Ayse; Velásquez-Montoya L.; Paniagua, J.; Adams, peter; Overton, MargeryThe analysis of interactions between human and natural systems is crucial for sound beach management practices. Those interactions can be simulated via agent-based modeling. Nevertheless, more work is needed to identify and understand model capabilities pÍtem Influence of preprocessing and segmentation on the complexity of the learning machines in medical imaging(Indian Society for Development and Environment Research) Paniagua, J.; Restrepo, D.; Ariza, L.; Jose Garcés E; Diaz, C.; Diana Serna Higuita; Wiston Arrazola; Sebastian Arango; Ramiro Vélez Koeppel; Miguel Mejia; Wayner Barrios; Jesus Vargas Bonilla; Quintero, Olga Lucia; Universidad EAFIT. Departamento de Geología; Ciencias del MarÍtem Influence of preprocessing and segmentation on the complexity of the learning machines in medical imaging(Indian Society for Development and Environment Research) Paniagua, J.; Restrepo, D.; Ariza, L.; Jose Garcés E; Diaz, C.; Diana Serna Higuita; Wiston Arrazola; Sebastian Arango; Ramiro Vélez Koeppel; Miguel Mejia; Wayner Barrios; Jesus Vargas Bonilla; Quintero, Olga Lucia; Universidad EAFIT. Escuela de Ciencias; Modelado MatemáticoÍtem Influence of preprocessing and segmentation on the complexity of the learning machines in medical imaging(Indian Society for Development and Environment Research) Paniagua, J.; Restrepo, D.; Ariza, L.; Jose Garcés E; Diaz, C.; Diana Serna Higuita; Wiston Arrazola; Sebastian Arango; Ramiro Vélez Koeppel; Miguel Mejia; Wayner Barrios; Jesus Vargas Bonilla; Quintero, Olga Lucia; Paniagua, J.; Restrepo, D.; Ariza, L.; Jose Garcés E; Diaz, C.; Diana Serna Higuita; Wiston Arrazola; Sebastian Arango; Ramiro Vélez Koeppel; Miguel Mejia; Wayner Barrios; Jesus Vargas Bonilla; Quintero, Olga Lucia; Universidad EAFIT. Departamento de Ingeniería de Sistemas; I+D+I en Tecnologías de la Información y las ComunicacionesÍtem Laguerre Gauss kernel for COVID-19 medical decision making from chest Tomography(Indian Society for Development and Environment Research) Paniagua, J.; Emmanuel Salinas; José Garces; Quintero, Olga Lucia; Universidad EAFIT. Departamento de Geología; Ciencias del MarÍtem Laguerre Gauss kernel for COVID-19 medical decision making from chest Tomography(Indian Society for Development and Environment Research) Paniagua, J.; Emmanuel Salinas; José Garces; Quintero, Olga Lucia; Universidad EAFIT. Escuela de Ciencias; Modelado MatemáticoÍtem Observations of bed elevation changes at Cape Canaveral shoals(World Scientific Publishing, 2019-05-01) Paniagua, J.; Universidad EAFIT. Departamento de Ingeniería; Ciencias del MarÍtem Regional controls in the distribution and morphometry of deep-water gravitational deposits along a convergent tectonic margin. Southern Caribbean of Colombia(Elsevier BV, 2020-08-06) Naranjo Vesga, Julián Francisco; Ortiz Karpf, Andrea; Wood, Lesli; Jobe, Z.; Paniagua, J.; Shumaker, L.; Mateus Tarazona, Darwin; Universidad EAFIT. Departamento de Geología; Ciencias del MarDeep-water fold and thrust belts often develop in convergent tectonic margins, creating irregular slope profiles that control the distribution of deep-water gravity deposits. However, in areas with high sediment supply, the erosion and sedimentation can minimize structural relief and smooth the slope. Using multibeam bathymetry with 3D seismic data, we analyze the distribution of deep-water gravity-driven deposits along the convergent margin of the southern Caribbean of Colombia, comparing areas with different continental sediment supply, slope profile, and shelf width. We identify three geomorphological zones: The Northern, Central and Southern Zones. The Northern Zone is characterized by a gentle slope topography, high sediment supply, and large (>100 km length) channel-levee systems traversing the slope and basin floor. In this zone, shelf-attached mass-transport deposits erode and smooth sea-floor topography. The Central Zone is characterized by low sediment supply and steep and irregular slope topography. Here, short-runout mass-transport deposits sourced from the crests and steep flanks of emergent anticlines are common. The irregular relief created by tectonic deformation forms barriers for sediment transport, leading to tortuous sediment-flow pathways. Submarine canyons incise the thrust-cored anticlines, transporting sediment through interconnected, adjacent piggyback sub-basins. Finally, the Southern Zone is characterized by steep slope and moderate sediment supply. Here, tectonic deformation has been smoothed by numerous shelf-attached mass-transport deposits. The erosional scours carved by mass flows merge downslope and evolve into submarine canyons that can deliver mass-transport deposits more than 80 km into the basin. We analyze the impact of slope profile, sediment input and shelf width on the distribution and morphology of deep-water deposits along the southern Colombian Caribbean margin, and present a predictive model for the depositional patterns more likely to develop in other continental margins affected by deep-water fold and thrust belts. © 2020 Elsevier LtdÍtem Tidal Distortions Related to Extreme Atmospheric Forcing Over the Inner Shelf(AMER GEOPHYSICAL UNION, 2019-09-10) Paniagua, J.; Universidad EAFIT. Departamento de Geología; Ciencias del MarInner shelf transport is driven by the combination of tides, waves, density gradients, and wind that interact with bottom bedforms. To extend understanding of shoal-swale bathymetry influences on inner-shelf hydrodynamics, we provide observations at a swale similar to 13 m deep within Cape Canaveral shoals, similar to 36 km away from Hurricane Matthew's path during October 2016. Observations document a unidirectional flow that reached 2.7 m/s at a distance similar to 15 km away from the shoreline. The flow changed direction, over the course of the storm, counterclockwise from southwestward (similar to 2.7 m/s) to northeastward (similar to 1 m/s). The unidirectional flow modified tides over the inner shelf analogously to a river discharge in a channelized tidal flow, producing overtides of the semidiurnal tidal harmonic. Our results provide measurements during extreme conditions related to shore parallel-propagating hurricanes that can inform morphodynamic and ecological models. Plain Language Summary Hurricane conditions (winds, waves, and storm surge) are conspicuous at the surface of the ocean. Beneath the surface, however, enhanced water motions strongly influence sand transport and ecological processes at nearby beaches. We present a unique data set of water motions collected over the sand banks near Cape Canaveral, on the Florida Atlantic coast, during the passage of Hurricane Matthew in 2016. At the peak of the storm, water moved with a maximum speed close to 2.7 m/s (9.7 km/hr or 6 mi/hr). These speeds were six times greater than speeds measured during typically strong winds and 10 times greater than normal. Hurricane-induced flows deformed water levels when compared to levels from predicted tides. Models of ocean bottom change and ecological processes should acknowledge these extreme water motions. The conditions documented in this study are likely to be observed whenever hurricanes propagate northward along the U.S. Atlantic coast, as in the cases of Hurricane Matthew in 2016, Hurricane Irene in 2011, and Hurricane Sandy in 2012.