The significance of the 1971 flank eruption of Etna from volcanological and historic viewpoints

Main Article Content

Stefano Branca
Daniele Musumeci
Luigi Ingaliso

Abstract

The 1971 eruption represents a benchmark in the recent history of Etna volcano. From a


volcanological point of view, this eruption was characterised by complex intrusive dynamics


associated with significant ground deformation that induced the activation of the Moscarello


seismogenic fault and the formation of a new summit crater: the Southeast Crater. At the same


time, the 1971 event marks an important change in the eruptive style and composition of the magma


towards products richer in K. It is no coincidence that, over the next fifty years, there would be an


increase in the frequency of summit and flank eruptions and associated output rate. From an


historical viewpoint, the eruptive event of 1971 was the first important flank eruption studied by


the International Institute of Volcanology: the analysis of the scientific articles on this activity


reveals a greater multidisciplinary content in the descriptions and explanations of volcanic activity.


Particularly important were the collaborations of British and French research groups that, together


with their Italian colleagues, succeeded in giving a complete picture of the eruption and describing


the state of knowledge on the Sicilian volcano. The multidisciplinary methodology used to study this


 eruption is still valid today.

Article Details

How to Cite
1.
Branca S, Musumeci D, Ingaliso L. The significance of the 1971 flank eruption of Etna from volcanological and historic viewpoints. Ann. Geophys. [Internet]. 2021Dec.13 [cited 2022Aug.13];64(5):VO543. Available from: https://www.annalsofgeophysics.eu/index.php/annals/article/view/8669
Section
Special issue: WHEN VOLCANOLOGISTS MEET ARCHAEOLOGISTS AND OTHER DISCIPLINES