Which process causes increased lahar hazard after tephra deposition?

💡 Explanation

Decreased surface water infiltration rates increase lahar risk; because tephra reduces permeability causing overland flow during precipitation, therefore easily generating mudflows, rather than water filtering harmlessly into the subsurface.

• Which phenomenon causes explosive volcanic eruptions at subduction zone stratovolcanoes?
• Which consequence results when hydraulic action exceeds consolidation?
• Which mechanism maintains the consistent latitudinal boundaries of Hadley cells despite seasonal insolation changes?
• Which phenomenon causes uplift and subsidence flanking strike-slip faults during rupture events?
• Which horizon development occurs as clay minerals migrate?
• Which net outcome results as warmer tropical air undergoes latitudinal transport?