Which mechanism causes lahars to form rapidly during volcanic eruptions alongside glacial activity?

💡 Explanation

When pyroclastic flows occur near glaciers, rapid glacial melting is induced because extremely hot flows instantly melt ice, creating a slurry of ash and water which forms a lahar. Therefore, pyroclastic flow-induced melting results, rather than condensation, calving, or geothermal effects which induce melting via different mechanisms and timescales.

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