VEI Volcanic Explosivity Index VEI Ejecta volume Plume Frequency Occurrences in

Question

VEI Volcanic Explosivity Index VEI Ejecta volume Plume Frequency Occurrences in last 10,000 years man many Description Example 10,000 ms > 10,000 m3 Mauna Loa Stromboli non-explosive 1,000,000 m > 10,000,000 m3 explosive severe 1-5 km 3-15 km weekl yearly Galeras (1993) Cordón Caulle (1921) 3477 868 4 > 0.1 km cataclysmic 10-25 km? 10 yrs Eyjafjallajökull (2010) 421 > 1 kms paroxysma25 km? ? 50 yrs Mount St. Helens 166 1980) 10 kms 100 km > 1,000 km 6 >25 km100 yrs Krakatoa (1883) 51 colossal super-colossal25 km mega-colossal>25 km 1000 vrs Tambora (1815) 5 (+2 suspected) 10,000 yrs Taupo (26,500 BP) This measure the size of the eruption after it is finished However, forecasting an eruption on a scale is rather more complicated, as each volcano has a slightly different way of behaving so there are almost as many scales as there are volcanoes! But most use a variation on the green (no problem), yellow (not much to worry about), orange (watch ïhis space!) and finally red (move NOW) warning system 34

Explanation / Answer

Tambora is volcano that has a VEI of 7 which has a frequency of reccurence eruption in 500 to 1000 years. hence Tambora last erupted on 1815 so it may again erupt on 2315 to 2815. Or on an average 2565.

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