Which consequence results when rapid deposition overwhelms alluvial fan equilibrium?

💡 Explanation

River avulsion occurs because increased sediment load promotes channel instability requiring frequent, large-scale shifts termed river channel 'avulsion.' Alluvial buildup forces the river to seek a steeper path, therefore a new flow, rather than increased weathering which is slow.

• Which consequence occurs after long-term barrier island migration?
• Which pattern results because excessive freshwater reduces gyre density?
• Which outcome accelerates cliff retreat weathering when wave approach weakens the fault?
• Which climate outcome occurs when Walker circulation weakens during intense El Niño events?
• Which outcome is caused by sustained aeolian transport in arid regions?
• Which risk increases when reduced sediment supply hinders sand deposition behind a developing coastal barrier island?