期刊
GEOPHYSICAL RESEARCH LETTERS
卷 46, 期 11, 页码 5817-5827出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2019GL082467
关键词
2018 Mount Etna eruption; dikes intrusion; earthquake; 3-D source geometry; analytical modeling; DInSAR measurements
资金
- EPOS-IP project of the European Commission [GA 676564]
- ESA GEP project
- I-AMICA project (Infrastructure of High Technology for Environmental and Climate Monitoring) [PONa3_00363]
- Copernicus Program of the European Union
- [DPC-IREA 2019-2021]
We investigate the 24-27 December 2018 eruption of Mount Etna occurred from fissures located on the volcano eastern flank and accompanied by a seismic swarm, which was triggered by the magma intrusion and continued for weeks after the end of the eruption. Moreover, this swarm involved some of the shallow volcano-tectonic structures located on the Mount Etna flanks and culminated on 26 December with the strongest event (M-L 4.8), occurred along the Fiandaca Fault. In this work, we analyze seismological data and Sentinel-1 Differential Interferometric Synthetic Aperture Radar (DInSAR) measurements, the latter inverted through analytical modeling. Our results suggest that a dike source intruded, promoting the opening of the eruptive fissures fed by a shallower dike. Moreover, our findings indicate that the activation of faults in different sectors of the volcano may be considered as a response to accommodate the deformations induced by the magma volumes injection.
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