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← GeographyWhich outcome occurs following the moraine dam failure surrounding an alpine lake?
A)Creation of extensive braided channels downstream✓
B)Formation of a long-lasting lacustrine environment
C)Increase in slope stability via sediment armoring
D)Decrease in regional groundwater recharge rates
💡 Explanation
When a moraine dam fails, a glacial lake outburst flood (GLOF) occurs because rapid erosion happens unconstrained by base level controls, resulting in transport of large volumes of sediment downstream. Therefore, braided channels downstream result, rather than creating a lake, armoring slopes, or altering groundwater, which require different processes than that of glacial erosion and outburst flooding.
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