Evolución geomorfológica fluvial reciente en ríos tropicales andinos del Ecuador: evolución geomorfológica fluvial y los movimientos en masa asociados del río Piedra Fina 2.

Abstract

After the collapse of the San Rafael waterfall on 2020, the geomorphology of the Coca River Watershed became unstable due to the process of regressive erosion, PER which has drastically modified the river landscape, and, as a consequence, its tributary rivers present upstream would be affected by this process, for this reason the geomorphology of the Piedra Fina 2 River tributary was evaluated, located in the province of Napo, Chaco canton, north of the Sub-Andean region, through the use of quarterly information from 2020 to 2022 of digital terrain models (DTM) thus finding a trend that reflects a high erosive potential due to the lithological variability of the area which rule out the equilibrium conditions within the longitudinal profile of the river. The mass movements are visible evidence of geodynamics within this micro-basin which are distinguished by the natural weathering conditions and high slopes, as well as those that have been generated in response to the activity of the PER