What does VEI mean in NASA?

This page is about the meanings of the acronym/abbreviation/shorthand VEI in the Governmental field in general and in the NASA terminology in particular.

Vehicle End Item

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Definition

What does VEI mean?

vei
The volcanic explosivity index (VEI) is a relative measure of the explosiveness of volcanic eruptions. It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self at the University of Hawaii in 1982. Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value. The scale is open-ended with the largest eruptions in history given a magnitude of 8. A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m3 (350,000 cu ft) of tephra ejected; and 8 representing a mega-colossal explosive eruption that can eject 1.0×1012 m3 (240 cubic miles) of tephra and have a cloud column height of over 20 km (66,000 ft). The scale is logarithmic, with each interval on the scale representing a tenfold increase in observed ejecta criteria, with the exception of between VEI-0, VEI-1 and VEI-2.

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"VEI." Abbreviations.com. STANDS4 LLC, 2024. Web. 19 Mar. 2024. <https://www.abbreviations.com/term/569018>.

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