What are the main hazards from volcanoes?

What are the main hazards from volcanoes?

What are the hazards from volcanoes?

• Lava. Lava (molten rock) can erupt as fire fountains or lava flows (when it is runny) or as steep-sided domes (when it is viscous).
• Pyroclastic flows.
• Phreatic explosions.
• Lahars.
• Jökulhlaups.
• Landslides.
• Volcanic earthquakes.
• Tsunamis.

How do volcanoes cause other natural disasters?

Volcanic gases that pose the greatest potential hazards are sulfur dioxide, carbon dioxide, and hydrogen fluoride. Locally, sulfur dioxide gas can lead to acid rain and air pollution downwind from a volcano. These gases can come from lava flows as well as a volcano that erupts violently.

What are the different types of volcanic hazards?

Types of Volcanic Hazards. The following is a list of volcanic hazards. Click on the one that you are interested in learning about. Volcanic Earthquakes. Directed Blast. Tephra. Volcanic Gases. Lava Flows. Debris Avalanches, Landslides, and Tsunamis.

What are the health risks of a volcano?

The fine, glassy particles of volcanic ash can increase the health risks for children and people with respiratory conditions, such as asthma, chronic bronchitis, or emphysema. Protect your eyes by wearing goggles.

What kind of pollution can a volcano cause?

Locally, sulfur dioxide gas can lead to acid rain and air pollution downwind from a volcano. These gases can come from lava flows as well as a volcano that erupts violently. Volcanic ash can travel hundreds to thousands of miles downwind from a volcano. Fresh volcanic ash is gritty, abrasive, sometimes corrosive, and always unpleasant.

Why are landslides a hazard in a volcano?

Landslides and other collapses of large parts of a volcano may occur with or without accompanying eruptions, and may transform into lahars if significant water is available. Because many volcanoes are steep and unstable, landslides frequently pose a hazard even when a volcano is dormant (not erupting).