Which river characteristic increases the risk of avulsion within a distal alluvial fan?

💡 Explanation

Accelerated aggradation on the floodplain increases avulsion risk because vertical accretion reduces the elevation difference between the channel and its surroundings, resulting in easier flow path diversions; therefore avulsion becomes more likely, rather than channel stabilization.

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• Which risk increases when intense tropical rainfall occurs?
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• Which mechanism influences the orientation of cirques during glacial formation on a large mountain range?
• Which shift results when El Niño reduces upwelling?
• Which outcome results when increased atmospheric pressure offshore hinders coastal upwelling?