Which outcome occurs when glacial meltwater breaches moraine deposits?

💡 Explanation

A glacial lake outburst flood occurs because hydrostatic pressure accumulating behind the moraine overcomes the moraine's stability, causing a sudden release in meltwater via structural failure; therefore a flood occurs, rather than steady runoff because the damming capacity is ultimately exceeded.

• Which outcome accelerates coastal erosion when streams carrying sediment are dammed?
• Which mechanism explains sediment layering in glacially-formed proglacial lakes with seasonal meltwater inflow?
• Which outcome commonly occurs when fault creep is persistently interrupted?
• Which phenomenon causes offset landforms and frequent shallow earthquakes parallel in a transform plate boundary?
• Which outcome arises when infiltrating water encounters fractured limestone cave system?
• Which mechanism causes orographic precipitation on the windward side of mountain ranges along active strike-slip faults?