In the event of a US Government shutdown, the Global Volcanism Program will remain OPEN through at least Saturday, October 7, by using prior year funds. Visit for updates.

Logo link to homepage

Image Collection | Hazards and Processes | Volcanic Gases

There are 5,971 volcano images available on the GVP website, including 4,242 in these new galleries with updated captions and keywords, and at a larger size.

Magma contains dissolved gas that is released as it moves towards the surface and as it erupts, providing the driving force for most eruptions. Gases include water (H2O), carbon dioxide (CO2), Sulfur Dioxide (SO2), Hydrogen Chloride (HCl), Hydrogen Fluoride (HF), Particulate Matter (PM), and Aerosol. Gases can be corrosive and can have health impacts or result in fatalities. Gas is also released into the atmosphere through soil, vents, fumaroles, and hydrothermal systems. It is rare that enough volcanic gas is erupted to impact climate and this depends on a number of factors including the location of the volcano.

IVHHN Volcanic gas information:


Image Gallery for Volcanic Gases

Associated Gallery Keywords