Análisis de la influencia de la geodinámica y los impactos antrópicos en la geomorfología fluvial del río coca. Caso de estudio: impactos fluviales del proyecto Coca Codo SINCLAIR – PHCCS.

Abstract

Geomorphological analysis parameters such as density and sinuous drainage; conjugated tectonics, seismic, volcanic and anthropogenic activity, among others, will determine the impact on the fluvial geomorphology of the Coca River. To meet the targets were used: orthophotos, field observations, analysis of satellite images through Google Earth and GIS, and bibliographic information collected. Watershed of the Coca River covering an area of 5283.74 𝑘𝑚², is located in the Subandina zone and is affected by a dense network of faults, the same that was reactivated by earthquakes in 1987, which caused one of the most catastrophic landslides twentieth century. The Coca river watershed was divided into 8 sub basin of which the sub basin del Salado river is the main contribution in solid and liquid flow. Using a GIS allowed to define the different styles river adopting the main channel of the river Coca watershed, differentiating three styles: straight, meandering and braided. They are mainly controlled by the active geodynamic making it possible to have this difference in styles over short distances.