EGU General Assembly 2021
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

The challenge of monitoring volcanic unrest processes in small oceanic islands: the case of Tagoro volcano (Canary Islands)  

Carmen del Fresno1, Alicia Felpeto1, Itahiza Domínguez Cerdeña2, Laura García-Cañada1, Stavros Meletlidis2, Elena González-Alonso1, Pedro A. Torres2, Natividad Luengo-Oroz2, Sergio Sainz-Maza1, Rubén López-Díaz1, David Moure2, and Benito Casas2
Carmen del Fresno et al.
  • 1Observatorio Geofísico Central. Instituto Geográfico Nacional, Madrid, Spain (
  • 2Centro Geofísico de Canarias. Instituto Geográfico Nacional, Santa Cruz de Tenerife, Spain

Monitoring the activity of a volcanic unrest in an archipelago is always a challenging task. Difficulties are even greater if we are also dealing with monogenetic volcanism, without a defined magma chamber, where each unrest can be related to a different magma intrusion, following different ascending paths towards an eruptive vent that can arise both on land or at sea. Moreover, if the repose time between eruptions is long, the historical eruptive record contains very few eruptions, and hence few data that allow an in-depth characterization of the dynamics of the volcanism in the area. 

This year marks the tenth anniversary of the beginning of the last eruption in the Canary Islands (submarine eruption of Tagoro volcano, 2011-2012). In this work we review the main difficulties, concerns and uncertainties that arose in the monitoring of this phenomenon. Some of these problems were solved during the crisis, throughout a multiparametric monitoring and the collaboration of different institutions; others would not be a major problem today, thanks to recent technological advances. On the other hand, there are still some unsolved monitoring difficulties when studying an event similar  to the one which lead to Tagoro volcano ten years ago. Part of the complexity is inherent to the spatial distribution of the islands in the archipelago and the limitations on the knowledge of the volcanic phenomenon. It is in these last challenges where the key to improve the volcano monitoring in oceanic islands is. 

How to cite: del Fresno, C., Felpeto, A., Domínguez Cerdeña, I., García-Cañada, L., Meletlidis, S., González-Alonso, E., Torres, P. A., Luengo-Oroz, N., Sainz-Maza, S., López-Díaz, R., Moure, D., and Casas, B.: The challenge of monitoring volcanic unrest processes in small oceanic islands: the case of Tagoro volcano (Canary Islands)  , EGU General Assembly 2021, online, 19–30 Apr 2021, EGU21-11315,, 2021.


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