Meaning Volcanic Explosivity Index
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Volcanic Explosivity Index


a measure of the magnitude and energy of volcanic eruptions based on several parameters, including eruption duration and style, volume of eruptive products, and the eruption column height
Source: gns.cri.nz (offline)

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Volcanic Explosivity Index


An eruption magnitude scale called the Volcanic Explosivity Index, or VEI, used to measure the strength of volcanic eruption. Volume of products, eruption cloud height and qualitative observations are used to determine the explosivity value. The scale ranges from 0 (small non-explosive eruptions) to 7 (large explosive eruptions).
Source: science-edu.larc.nasa.gov (offline)




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