11. Regions affected by Plinian eruptions are subjected to heavy pumice airfall affecting an area in size. 12. According to the Volcanic Explosivity Index, Plinian eruptions have a VEI of 4, 5 or 6. 13. Column collapse is one of the most common and dangerous volcanic hazards in a plinian eruption . 14. These massive eruptive columns are the distinctive feature of a Plinian eruption , and reach up into the atmosphere. 15. The volcano usually generates Plinian eruptions , which produce swift-moving currents of hot gas and rock called pyroclastic flows. 16. The historical eruptions of this basaltic-andesitic volcano dates back to 1616 and ranges from Strombolian to basaltic Plinian eruptions . 17. Imbabura is the product of Strombolian Eruptions, which, in comparison to Plinian Eruptions , are relatively low-intensity and low volume. 18. The other volcano, which produced at least two Plinian Eruptions of its own, is known as "'Fuya Fuya " '. 19. One possible explanation for this was the injection of volcanic gases into the atmosphere by plinian eruptions at Maat Mons. 20. During Plinian eruptions , pumice and silicic magma is fragmented in the volcanic conduit, because of decompression and the growth of bubbles.
