Which phenomenon causes lahars with destructive debris flows?

💡 Explanation

A jökulhlaup generates massive debris flows because ice melts due to geothermal or volcanic activity, forming a slurry; therefore lahars follow the valleys rather than other geophysical upheavals, which cause crustal shifting.

• Which outcome is caused by fractured limestone landscapes?
• Which geographical outcome results from loess sediment deposition?
• Which geomorphic feature commonly results from thermal expansion of permafrost?
• Which consequence results when rapid deposition overwhelms alluvial fan equilibrium?
• Which phenomenon causes localized regions of downwelling within subtropical gyres in the ocean?
• Which outcome is primarily caused when differential heating establishes atmospheric cells near the equator?