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Researchers Uncover Unique 'Stomp-Rocket' Mechanism Behind Kīlauea's 2018 Eruptions

Study reveals how sudden pressure increases from collapsing ground triggered explosive volcanic activity in Hawaii

Lava flow on the eastern flank of Kilauea, fed by magma draining from underwater reservoir. At fissure 8, fountains provide a vigorous supply of lava that exits the cinder cone and drops over a spillway to enter a well-established lava channel that extends to the sea. Credit: USGS
Kilauea
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Overview

  • Kīlauea's 2018 eruptions were driven by a new type of volcanic mechanism involving sudden ground collapses.
  • The collapsing ground increased pressure in the magma reservoir, propelling gas and rock fragments explosively.
  • This eruption style, likened to a stomp-rocket toy, differs from typical magma or steam-driven eruptions.
  • The findings provide insights into forecasting future eruptions and improving safety warnings.
  • Understanding these mechanisms can help mitigate hazards from volcanic plumes and their impact on aviation and health.