Which process accelerates oxbow lake formation when tectonic subsidence lowers floodplain elevation?

💡 Explanation

When tectonic subsidence lowers floodplain elevation, river's gradient decreases, increasing sinuosity and intensifying lateral erosion on meander bends as the river seeks the steepest course. Therefore, increased erosion accelerates oxbow formation, rather than deposition rate decrease, or enhanced evapotranspiration/recharge which don't create cutoffs.

• Which outcome is most likely after an oxbow lake forms due to river meandering?
• Which outcome occurs when a transform fault zone restricts a river's meander plain expansion?
• Which process drives increased surface productivity due to coastal upwelling?
• Which mechanism causes braided river channel formation within an alluvial plain environment?
• Which consequence results when thermal stratification impedes vertical mixing in fjord streams?
• Which process primarily drives the formation of a deep fjord from a pre-existing U-shaped glacial valley?