Which outcome accelerates gully formation on alluvial fans?

💡 Explanation

Localized base-level fall encourages headward erosion via channel incision. This is because knickpoint migration increases flow velocity down-cutting channel, therefore intensifies gullying; rather than deposition or vegetation effects.

• Which outcome increases rates of erosion in cirques?
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• Which mechanism causes cyclonic rotation in low-pressure weather systems in the Northern Hemisphere?
• Which mechanism deflects surface ocean currents, inducing gyres, due to Earth's rotation?
• Which consequence results when lava's rheological properties change?