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← GeographyWhich risk increases when volcanic mudflows meet permafrost?
A)Increased flow lahar formation✓
B)Enhanced composite cone stability
C)Reduced lateral debris spreading
D)Decreased overall mudflow volume
💡 Explanation
Increased flow lahar formation occurs because permafrost thawing induces more water saturation, leading to enhanced cohesive forces via the mechanism of soil liquefaction; therefore, lahars form more readily rather than undergoing consolidation at equilibrium conditions.
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