Primary Hazards:
- Pyroclastic flows. The frothing of magma at the vent produces bubbles that burst explosively to eject hot, poisenous gases as well as hot ash. Clouds form these gases and materials are most lethal when they roll down the sice of a volcano
- Tephra (ash falls). These are rock fragments that are ejected into the earths atmosphere and vary in sizes. The accumilation of Tephra on roofs can cause fires and can cause buildings to collapse.
- Lava Flows. Flows of molten rock, often fast moving and lethal.
- Volcanic Gases. These are mixed gases that are emitted during explosive eruptions. The carbon dioxide is particularly dangerous.
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