vulcanology

Vulcanology, commonly spelled volcanology, is the scientific study of volcanoes, lava, magma, and related phenomena. It seeks to understand how volcanism forms and evolves, how eruptions occur, and how volcanic products interact with the atmosphere, surface, and biosphere. The field integrates geology, geophysics, geochemistry, hydrology, and atmospheric science to explain volcanic activity and its impacts.

Researchers study volcanism through field observations of eruptions and deposits, petrology and geochemistry of rocks, and the monitoring of seismic, ground deformation, and gas emissions. Satellite remote sensing and airborne measurements provide data on ash plumes, lava flows, and volcano deformation. This information supports eruption forecasting and risk assessment for nearby populations.

Volcanoes vary in type and behavior. Major categories include stratovolcanoes, shield volcanoes, cinder cones, and lava domes. Volcanology also studies secondary phenomena such as ash clouds, pyroclastic flows, lava flows, lahars, and volcanic gases, which pose hazards to aviation, health, water supplies, and infrastructure.

The modern discipline emerged with systematic observation and measurement in the 18th to 19th centuries, driven by advances in geology, seismology, and geodesy. International networks and organizations, including the Global Volcanism Program at the Smithsonian Institution, compile catalogs of volcanic activity and support research and hazard mitigation.

Volcanology informs public safety, aviation guidance, environmental monitoring, and climate research by documenting volcanic emissions and their effects on atmosphere and climate. It remains a highly interdisciplinary field that combines fieldwork, laboratory analysis, and computational modeling to understand and anticipate volcanic events.