Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/16799
Authors: | Scarfì, Luciano* Aloisi, Marco* Barberi, Graziella* Langer, Horst* |
Title: | Observing Etna volcano dynamics through seismic and deformation patterns | Journal: | Scientific Reports | Series/Report no.: | /13 (2023) | Publisher: | Nature PG | Issue Date: | 10-Aug-2023 | DOI: | 10.1038/s41598-023-39639-9 | Keywords: | Mt. Etna (Italy) Volcano dynamics Seismic and deformation patterns Focal mechanisms Stress field |
Subject Classification: | 04.08. Volcanology 04.06. Seismology 04.03. Geodesy |
Abstract: | Geophysical data provide the chance to investigate a volcano's dynamics; considerable information can especially be gleaned on the stress and strain patterns accompanying the internal processes and the effect of magma ascent on the main structures triggering earthquakes. Here, we analysed in detail the seismicity recorded over the last two decades on Etna volcano (southern Italy), focusing on earthquakes distribution and focal mechanism clustering; the ground deformation pattern affecting the volcanic edifice with the inflation and deflation phases was also examined. Analysed data were compared in order to shed light on possible relationships with the volcanic activity and to better understand the internal dynamics of the volcano over time. Significant steps during or shortly before major eruptions in the seismic strain release and ground deformation temporal series highlight a straightforward relationship between seismicity occurring at shallow level, inflation/deflation and volcanism. Furthermore, at depths greater than 5-7 km, down to about 20 km, the orientation of the P- and T-axes clearly indicate the existence of a pressure source in the central part of the volcano. All the results underline that the stress field related to the volcano plumbing system interferes with the regional field, partly overriding it. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
23_Scarfi_etal.pdf | Open Access Published file | 12.59 MB | Adobe PDF | View/Open |
Page view(s)
24
checked on Apr 27, 2024
Download(s)
3
checked on Apr 27, 2024