Which outcome occurs when lahar viscosity increases during a flow event?

💡 Explanation

Increased lahar viscosity increases bank overtopping, because internal resistance increases via momentum transfer, causing the lahar to bulge as it flows slowly, therefore fluid pressure overcomes boundaries, rather than maintaining a channel owing to low viscous resistance.

• Which outcome results when barrier islands subside relative to sea level?
• Which outcome results when insolation variability weakens the equatorial temperature gradient?
• Which outcome regularly occurs where the Pacific Plate subducts under Japan?
• When a prolonged drought lowers the water table in karst regions with populated areas, which hazard's formation accelerates?
• Which process substantially alters the dimensions of an oxbow lake’s morphology after its formation?
• Which outcome occurs when excessive groundwater extraction destabilizes coastal aquifers?