The 2007 eruptions and caldera collapse of the Piton de la Fournaise volcano (La Réunion Island) from tilt analysis at a single very broadband seismic station

A single inflation-deflation cycle underpinned the three eruptions of Piton de la Fournaise volcano in 2007, revealing a complex interplay between magma intrusion and caldera collapse. Analysis of seismic tilt data from La Réunion Island's Geoscope station showed that the February summit eruption occurred during continuous inflation, which decelerated before the March eruption—a phase marked by sudden deflation. This deflation intensified without further eruptions, culminating in a major distal eruption on 2 April and a caldera collapse three days later. Long-term tilt trends suggest deep magma input triggered this sequence, offering new insights into volcanic processes linking surface activity to subsurface dynamics.

Fontaine, F. R., Roult, G., Michon, L., Barruol, G., & Muro, A. D. (2014). The 2007 eruptions and caldera collapse of the Piton de la Fournaise volcano (La Réunion Island) from tilt analysis at a single very broadband seismic station. Geophysical Research Letters, 41(8), 2803–2811. Portico. https://doi.org/10.1002/2014gl059691