Knowra Volcanic outgassing Volcanic outgassing Volcanic outgassing releases gases from a planet’s interior through eruptions, vents, and related processes. It transfers volatile compounds from the interior into the atmosphere and surface environment.
Volatile (geology) : A substance that readily becomes a gas under geological conditions, including water, carbon dioxide, and sulfur compounds. These substances are dissolved in magma before escaping during outgassing.
Carbon dioxide : A colorless gas composed of one carbon atom and two oxygen atoms, produced by biological and geological processes. It is a major volcanic gas and an important long-lived atmospheric greenhouse gas.
Volcanic gas monitoring : The measurement of gases emitted by volcanoes to track activity and assess hazards. Changes in gas flux or composition can signal changes in magma movement.
Earth's atmosphere : The gaseous envelope surrounding Earth, shaped by geological, biological, and physical processes. Volcanic emissions have contributed gases to the atmosphere over geological time.
Greenhouse effect : The warming of a surface caused when atmospheric gases absorb and re-emit outgoing infrared radiation. Outgassed carbon dioxide and water vapor can strengthen this warming when they accumulate.
Magma : Molten or partly molten rock beneath a planetary surface, commonly containing dissolved gases. As magma rises and pressure falls, dissolved gases can separate from it.
Water vapor : The gaseous form of water present in an atmosphere. Water is commonly abundant among volcanic emissions and can condense after release.
Differential optical absorption spectroscopy : A spectroscopic method that measures trace gases by detecting their characteristic absorption of light. It is used to quantify sulfur dioxide in volcanic plumes.
Venus's atmosphere : The dense atmosphere surrounding Venus, composed primarily of carbon dioxide with clouds of sulfuric acid. Its composition reflects a planetary history involving volatile release and atmospheric evolution.
Volcanic winter : A temporary period of global cooling caused by volcanic aerosols that reduce incoming sunlight. Sulfur gases from major eruptions can form the cooling aerosols involved.
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