ESS 106 Exam 2
VEI - correct answer scale to measure explosions by volume
eruptions caused by - correct answer interplay between density changes and viscosity
(temperature, viscosity, and rate/style of degassing)
viscosity - correct answer measure of difficulty/resistance to flow
bas...
eruptions column - correct answer ✔✔droplets of molten and glass particles
crystals
country rock/wallrock (lithic fragments)
gas thrust region - correct answer ✔✔100 m/s in strombolian/hawaiian
>600 m/s for Plinian
pryoclasts and gas jetted into atmosphere 10^2-^3 meters high
convective ascent region - correct answer ✔✔air is heated and resulting expansions decreases bulk
density of mixture
10s of km upward
velocity varies from 10-100 m/s
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