Longpré, Marc-Antoine, Tramontano, Samantha, Pankhurst, Matthew J, Roman, Diana C, Reiss, Miriam C, Cortese, Franco, James, Mike R, Spina, Laura, Rodríguez, Fátima, Coldwell, Beverley et al (show 5 more authors)
(2025)
Shifting melt composition linked to volcanic tremor at Cumbre Vieja volcano
Nature Geoscience, 18 (2).
pp. 175-183.
ISSN 1752-0894, 1752-0908
|
Text
Longpre_2025_NatGeo.pdf - Author Accepted Manuscript Available under License Creative Commons Attribution. Download (61MB) | Preview |
Abstract
Forecasting the onset, evolution and end of volcanic eruptions relies on interpretation of monitoring data—particularly seismic signals, such as persistent volcanic tremor—in relation to causative magmatic processes. Petrology helps establish such links retrospectively but typically lacks the required temporal resolution to directly relate to geophysical data. Here we report major and volatile element compositions of glass from volcanic ash continuously sampled throughout the 2021 Tajogaite eruption of Cumbre Vieja volcano, La Palma, Canary Islands. The data reveal the evolving chemistry of melts supplied from depth at a daily temporal resolution. Erupted melt compositions become progressively more primitive until the tenth week of activity, but a sharp reversal of this trend then marks the decline of mantle magma supply and a precursory signal to the eruption end. We find that melt SiO<inf>2</inf> content is positively correlated with the amplitude of narrow-band volcanic tremor. Tremor characteristics, inferences from simulations and model calculations point to melt viscosity-controlled degassing dynamics generating variations in tremor amplitude. Our results show promise for a monitoring and forecasting tool capable of quickly identifying rejuvenated and waning phases of volcanic eruptions and illustrate how subtle changes in melt composition may translate to large shifts in geophysical signals.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 37 Earth Sciences, 3703 Geochemistry, 3705 Geology, 3706 Geophysics |
| Divisions: | Faculty of Science & Engineering Faculty of Science & Engineering > School of Environmental Sciences |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 17 Jan 2025 09:31 |
| Last Modified: | 16 Jun 2026 20:10 |
| DOI: | 10.1038/s41561-024-01623-x |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3189713 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
Altmetric
Altmetric