Which long-term outcome results when river avulsion redirects flow?

💡 Explanation

Oxbow lakes form via channel abandonment by river avulsion redirecting the primary fluvial pathway; meander cutoffs initiate **sediment deposition** across the former bend. Therefore, an oxbow lake progressively isolates and slowly infills, rather than experiencing bed incision, because active flow bypasses abandonment.

• Which mechanism accelerates the Antarctic Circumpolar Current when it encounters Drake Passage's narrow seafloor constriction?
• Which land shift results when sediment flux overwhelms fluvial avulsion?
• Which outcome results when a coastal bluff experiences undercutting due to wave-driven, sediment-laden longshore drift?
• Which weathering outcome increases in arid desert pavements?
• Which risk increases when thermohaline circulation weakens substantially due to polar ice melt?
• Which risk increases when surface ocean gyre strength lessens?