I developed analytical and numerical models of viscous magma propagation through a conduit into a magma-filled reservoir. I applied this injection model to InSAR data from the ongoing unrest episode at Laguna del Maule volcanic field in Chile that started in 2007. Increasing the conduit inlet pressure and volumetric flow rate reproduces the measured accelerating uplift.

Collaborators: Patricia Gregg (U. Illinois Urbana-Champaign), Kurt Feigl (UW Madison).

Status: completed.

Publications:
Le Mével, H., Gregg, P., Feigl, K. L. (2016). Magma injection into a long-lived reservoir to explain geodetically measured uplift: application to the 2007–2014 unrest episode at Laguna del Maule volcanic field, Chile. Journal of Geophysical Research, 121, doi:/10.1002/2016JB013066.

Gregg, P. M., Le Mével, H., Zhan, Y., Dufek, J., Geist, D., & Chadwick Jr, W. W. (2018). Stress triggering of the 2005 eruption of Sierra Negra Volcano, Galápagos. Geophysical Research Letters, 45(24), 13-288, doi:/10.1029/2018GL080393

Le Mével, H., Córdova, L., Cardona, C., & Feigl, K. L. (2021). Unrest at the Laguna del Maule volcanic field 2005–2020: Renewed acceleration of deformation. Bulletin of Volcanology, 83(6), 39. doi:/10.1007/s00445-021-01457-0