Volcanic eruptions are classified according to
Position 1: Such stratospheric injections can depress global temperatures for years, demonstrating that volcanology has direct implications for climatology.
Position 2: This logarithmic scale measures the volume of ejected material and the height of the eruption column to assign a numerical value.
Position 3: In contrast, high-VEI events like the 1815 eruption of Mount Tambora release vast quantities of ash and sulfur dioxide into the stratosphere.
Position 4: Volcanic eruptions are classified according to their explosivity using the Volcanic Explosivity Index, or VEI, which ranges from zero to eight.
Position 5: Low-VEI eruptions, such as those typical of Hawaiian shield volcanoes, produce fluid lava flows with relatively little explosive force.
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