Revista Mexicana de Métodos Numéricos (2017). Vol. 1
Abstract
Nowadays, in order to better understand and forecast the dynamics of the oceans, we have a powerful tool, which are the numerical models. Their main approach is to perform numerical simulations of a natural environment. In this sense, the analysis of connectivity and dispersion of passive or inert particles in the bay of Banderas was carried out to define circulation patterns, variability, trajectories, areas of accumulation of wastes and contaminants due to the residues thrown by the Ameca River. For this purpose, the Delft3D hydrodynamic numerical model was used during the period between June 16 and September 16, 2013. Nine idealized experiments were developed, in which the tide, the wind and the river discharge (and their combinations) were considered as forcing. It was obtained that the tide is the forcing that most influences the dynamic of the region. The wind (atmospheric forcing) acts as a secondary mechanism along with the discharge of the river. The submarine cannon causes a dynamic barrier, induced by the acceleration of the currents that prevents the passage of particles between the north and the south-central zone of the bay. Therefore, high particle retention was observed in the center of the bay in the forced tidal experiments with approximately 60% accumulation, regardless of the place where the particles were released. This finding is linked to the semi-permanent cyclonic swirl, located in the central region of the bay, which is caused by the Mexican Coastal Current.
Abstract Nowadays, in order to better understand and forecast the dynamics of the oceans, we have a powerful tool, which are the numerical models. Their main approach is to perform [...]
Revista Mexicana de Métodos Numéricos (2017). Vol. 1
Abstract
During summer of 2016 an event was register in the volcanic lake of Santa María del Oro, a perturbation that triggers a considerable rise of amplitude on the lake system for at least two days. Due to the scarce observations in the lake, yet it is not definitive what event took place, a storm, a landslide or other. Based on numerical modelling a series of experiments were carry out in order to determine the kind of forcing that created those anomalies. This study is focused in characterizing a submarine landslide and the effects of the wind valley breeze. The results indicate that the lake acts as a dynamical membrane resonating to frequencies at 3.2 min (external seiche) and in a band of the 2-8 hrs (internal seiches) with the 2.64 hrs the most intense. After every forcing the water starts to oscillate uniformly and in a clockwise sense until the energy is dissipated by friction at the internal seiches frequencies.
Abstract During summer of 2016 an event was register in the volcanic lake of Santa María del Oro, a perturbation that triggers a considerable rise of amplitude on the lake system [...]
Conectividad y dispersíon de partículas en Bahía de Banderas, México 
