Numerical Experiments of the Hydrodynamic Coastal Ocean off Paita and Sechura Bays

• Autor: Carbonel, Carlos
• Formato: artículo
• Fecha de Publicación: 2020
• Institución: Universidad Nacional Mayor de San Marcos
• Repositorio: Revistas - Universidad Nacional Mayor de San Marcos
• Lenguaje: español
• OAI Identifier: oai:ojs.csi.unmsm:article/20305
• Enlace del recurso: https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/20305
• Nivel de acceso: acceso abierto
• Materia: Hydrodynamic; Finite Elements; Ocean Model; Coastal Upwelling; Hidrodinámica; elementos finitos; modelo de océano; resurgencia costera

The hydrodynamics and transport processes of the Peruvian marine region off Paita and Sechura is studied using a finite element model for open and limited regions, which allows analyzing the response in days and weeks of circulation, in opened and limited marine regions, forced mainly by wind fields, maintaining low frequency dynamics in the model. The Petrov-Galerkin variational formulation of the non-permanent governing equations is used to obtain the numerical solution of the approximate variables by linear polynomials in the domain discretized by triangular elements. Observational data of both the wind fields and the surface temperature have served to suggest hypotheses about the role of non-uniform winds on the surface dynamics of the region and the generation of cold plumes that are dispersed in a northwest direction. To clarify the response trends observed in the region, some numerical experiments have been carried out, considering schematic wind fields patterns, including northeast wind deflections in the northern side as observed. In this way, the dynamic sensitivity of the region is analyzed. The results confirm the role of non-uniform wind fields in the evolution of cold-water plumes, a characteristic of the region.