Magma interactions, crystal mush formation, and unrest during caldera collapse and lateral eruption at ocean island basaltic volcanoes (Piton de la Fournaise, La Réunion)

Key Points

• Magma interactions and crystal mush formation drive volcanic unrest in ocean island basaltic systems.
• In the case of Piton de la Fournaise, bold eruptions result from structural collapses of the caldera.
• Analysis using geophysical techniques reveals magma movement patterns during volcanic events.
• This emphasizes the need for continuous monitoring to predict future volcanic activity during unrest.