Which outcome occurs downstream of a glacial dam when rapid drainage begins?

💡 Explanation

A jökulhlaup causes alluvial fan deposition because meltwater releases with high energy, initiating substantial sediment transport; therefore, fans expand, rather than reefs building, which result from different triggers, like sea variations.

• Which mechanism directly drives the poleward transport of heat within thermohaline circulation?
• Which mechanism causes island arc formation during subduction of an oceanic plate beneath another oceanic plate?
• Which effect accelerates longshore drift when approaching headlands?
• Which mechanism causes the formation of an accretionary wedge at a subduction zone?
• Which mechanism reduces surface salinity in high-latitude oceans when warming temperatures accelerate glacial meltwater outflow?
• Which outcome arises when groundwater saturates fractured limestone?