RT Journal Article
T1 Tiltmeter data revealing transient magma viscosity changes during eruptions
A1 Gómez Ortiz, David
A1 Arnoso Sampedro, José
A1 Martín Velazquez, Silvia
A1 Martín Crespo, Tomás
A1 González Montesinos, Fuensanta
A1 Vélez, Emilio
A1 Benavent Merchán, María Teresa
AB Volcanic processes related to episodes of inflation, dike propagation, effusive activity, etc., can be detected by continuous surface tilt measurements. The interpretation of these measurements helps comprehend medium-to-short-term precursors of volcanic eruptions or establishes early warning alerts. Additionally, studying the transport and evolution of magmas from the Moho to the crust is key to understanding the eruptive process, but to date, they have not been traced from surface tilts. In this work, we witnessed two relevant and unique dynamic eruptive processes, as revealed by tilt signals, both in the 2021 La Palma eruption and in the 2011–2012 El Hierro eruption (Canary Islands). On the one hand, magma injection from the reservoir at depth is controlled by a pressure gradient. On the other hand, changes in magma viscosity, resulting from pressure variations, have been revealed from cyclic tilt signals. In the case of these signals, matching with a physical model helped us decipher them and establish the duration of this magmatic process, which varied depending on the size and rheological properties of the respective magma plumbing systems.
PB MDPI
YR 2025
FD 2025
LK https://hdl.handle.net/20.500.14352/131139
UL https://hdl.handle.net/20.500.14352/131139
LA eng
NO Gomez-Ortiz, D.; Arnoso, J.; Martín-Velázquez, S.; Martín-Crespo, T.; Montesinos, F.G.; Vélez, E.; Benavent, M. Tiltmeter Data Revealing Transient Magma Viscosity Changes During Eruptions. Remote Sens. 2025, 17, 317. https://doi.org/10.3390/rs17020317
NO Ministerio de Ciencia e Innovación
NO Universidad Complutense de Madrid
DS Docta Complutense
RD 19 mar 2026