Which outcome occurs when the rate volcanic outgassing decreases rapidly before pyroclastic eruptions?

💡 Explanation

Rapid outgassing decrease causes increased magma viscosity because bubble formation reduces, solidifying the material, thereby raising its resistance to flow; therefore viscosity goes up, providing building blocks for future eruption, rather than lowered pressures facilitating flow.

• Which long-term outcome occurs when soil's clay content limits percolation?
• Which mechanism causes deflection of ocean currents when driven by prevailing winds?
• Which consequence results from enhanced thermocline suppression during coastal upwelling?
• Which process accelerates cave formation when groundwater acidity increases?
• Which consequence results when levee armoring fails under erosion?
• Which process causes the formation of alluvial terraces along a river valley after uplift?