Kribben en ijsdammen

Migrating Pools in Yangtze River

The severity and location of bank erosion and bed scour changes with the variation of water level. At low flows, the main flow thread tends to follow the concave bank. As the discharge increases, the flow tends to cut across the convex bar, to concentrate against concave bank only downstream the bend apex. This change of flow pattern is...

A morphological time-scale for rivers

Processes on degradation and aggradation of rivers have a speed depending on the characteristics of the rivers. Starting from the basic equations a morphological timescale, characterising these processes, is defined. This morphological time-scale is estimated for various rivers.