Knee pain and popping is a common problem and can be caused by a number of factors. Another term commonly used for popping in the knee is Crepitus, which essentially means a noisy joint, whether it be popping, clicking, cracking or snapping.
The final type of erosion is attrition. Attrition is a way of eroding the riverâs load, not the bed and banks. Attrition is where pieces of rock in the riverâs load knock together, breaking chunks of rock off of one another and gradually rounding and shrinking the load.
Meanders. Meanders occur in the middle valley and are the result of erosion AND deposition processes on a river. In this section of the valley the river erodes laterally and migrates across the valley floor over time, widening the valley.lood plains, Levees and Yazoo streams. Rivers flood on a regular basis. The area over which they flood is known as the floodplain and this often coincides with regions where meanders form. When rivers flood in the middle valley the cover an area of land known as the flood plain.