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← GeographyWhich process causes periodic debris flows across alluvial fan deposits at higher latitudes?
A)Glacial outburst floods (jökulhlaups)✓
B)Persistent offshore oceanic upwelling
C)Intraplate volcanic eruptions
D)Progressive thermohaline circulation changes
💡 Explanation
Glacial outburst floods cause debris flows, because rapid ice melt results in high water discharge carrying large volumes of sediment; therefore jokulhaups, rather than other climate-related processes, explain the mechanism of sediment sorting and transport on alluvial fans.
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