Towing power
In geography, the term dragging force describes the kinetic energy of a river , which, if it is large enough, can remove loose material.
definition
The towing force is defined by
L = the drag force of the river (it can also be more precisely referred to as E (kin), kinetic energy)
m = the amount of water
v = the flow velocity of the river
Explanation
Only when the drag force of the river is higher than the load of the material to be transported does the formation of valleys occur , since the erosive force of the flowing water promotes deep erosion . If the towing force and load of the material load are roughly the same, side erosion and relatively even transport of loose material predominate . If the amount of entrained sediments (loose material) exceeds the drag force, accumulation (deposit) occurs and sedimentation increases. Whether material is predominantly eroded or accumulated therefore depends on the relationship between force and load.
In the upper course of a river, deep erosion dominates due to the greater gradient , while more material is deposited in the lower course . In the middle reaches you usually find lateral sedimentation of loose material. The grain size of the sediments carried along decreases with increasing transport distance. The intensity of the valley formation also depends on the hardness of the bedrock.
Individual evidence
- ↑ Towing force in the geology lexicon on: geodz.com