Volcano Hazards

Gas

• Gases are released into the air by magma
• Most abundant gas released is water vapor

Lahars

• Rushes downstream from a volcano
• Eruptions may trigger one or more

Landslides

• Large masses of rock and soil that fall
• Typically destroy everything in their path

Lava flows

• Streams of molten rock
• Everything in its path is covered by lava

Pyroclastic Flows

• High-density mixtures of hot, dry rock fragments and hot gases
• Will destroy nearly everything in its path

Tephra

• General term for fragments of volcanic rock and lava
• Consists of a wide range of rock particles