Basin-scale internal waves in tropical Andean reservoirs

This research, based on field data and complemented with numerical modelling, covers several aspects of the basin-scale internal waves hydrodynamics of the tropical Andean reservoirs. The present study shows that the presence of high vertical modes is not such a rare feature in typical Tropical Ande...

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Autores:: Posada Bedoya, Andrés Felipe

Tipo de recurso:

Fecha de publicación:: 2017

Institución:: Universidad Nacional de Colombia

Repositorio:: Universidad Nacional de Colombia

Idioma:: spa

Description
Summary:	This research, based on field data and complemented with numerical modelling, covers several aspects of the basin-scale internal waves hydrodynamics of the tropical Andean reservoirs. The present study shows that the presence of high vertical modes is not such a rare feature in typical Tropical Andean reservoirs weakly and continuously stratified, where the wind periodicity plays a fundamental role in the excitation of the dominant modes. We found that there is a strong link between the seasonal evolution of the basin-scale internal waves and the inflow density currents and we present for the first time, evidence of the linkage at the seasonal scale. This study draws attention on the need for a model which allows the estimation of the natural modes incorporating both the continuous stratification and the three-dimensional complex morphometry typical of some tropical lakes and reservoirs. In addition, evidence is presented from numerical modeling and for the first time, of simultaneous and different vertical responses with the same frequency in each basin that compose a two-basin reservoir. Finally, this work illustrates some of the differences that come up in the basin-scale hydrodynamics between tropical and temperate stratified water bodies.

Basin-scale internal waves in tropical Andean reservoirs

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