Earth Sciences

22 years of satellite imagery reveal a major destabilization structure at Piton de la Fournaise

Q. Dumont, V. Cayol, et al.

Explore the potential dangers lurking beneath the surface at Piton de la Fournaise volcano, where extensive research by Quentin Dumont, Valérie Cayol, Jean-Luc Froger, and Aline Peltier reveals how volcanic activity could lead to catastrophic collapses through complex magmatic intrusion processes.

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Playback language: English

Index

Abstract

Volcanic activity can induce flank failure, sometimes generating large earthquakes and tsunamis. This study uses satellite imagery and inverse modeling to analyze 57 magmatic intrusions at Piton de la Fournaise volcano between 1998 and 2020. A major arcuate dyke intrusion zone is connected to a sill intrusion zone, forming a spoon-shaped structure. This structure shows a continuum of displacement, from no slip to sheared sills and pure slip. Repeated intrusions into this structure could trigger catastrophic collapses.

Publisher

Nature Communications

Published On

May 12, 2022

Authors

Quentin Dumont, Valérie Cayol, Jean-Luc Froger, Aline Peltier

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