Which mechanism causes meanders to form within a braided river?

💡 Explanation

Secondary flow induces helical motion in the water, because this transports sediment laterally eroding outer banks forming meanders, rather than uniform erosion. Therefore, secondary flow is critical, rather than uniform conditions inducing straight channels.

• Which landscape outcome develops because subsurface limestone dissolution accelerates?
• Which mechanism primarily shapes lakes at convergent plate boundaries forming grabens?
• Which phenomenon limits downstream sediment transport from glacial streams during colder seasons?
• Which process limits the downcutting rate in cirques during glacial maximum?
• Which outcome results when thermokarst lake drainage accelerates?
• Which outcome follows water inclusion in subducting slabs?