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← GeographyWhich outcome occurs when a confined glacial outburst flood (jökulhlaup) erodes subglacial stream channels?
A)Increased geothermal vent activity nearby
B)Enhanced downstream sediment deposition rates✓
C)Reduced stream channel sinuosity upstream
D)Decreased coastal erosion at river mouths
💡 Explanation
Increased sediment deposition happens because high discharge events cause drastic changes in sediment transport capacity during the process of fluvial entrainment; therefore sediment deposition increases dramatically rather than initiating geothermal activity or reduced coastal erosion effects observed elsewhere.
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