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Physical geography: hazards > PMT - magnitude of volcanoes > Flashcards

PMT - magnitude of volcanoes Flashcards

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1
Q

what is volcanicity measured with?

A

the volcanic explosivity index (VEI)

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2
Q

what type of scale is the VEI?

A

logarithmic

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3
Q

what features are considered when calculating the VEI?

A

how much tephra was ejected
how long it lasts
how high the tephra was ejected

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4
Q

what are intense higher magnitude eruptions described as in comparison to calmer lower magnitude ones?

A

intense: explosive
calm: effusive

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Physical geography: hazards (41 decks)

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