Magma Degassing as a Source of Long-Term Seismicity at Volcanoes The Ischia Island (Italy) Case

Magma Degassing as a Source of Long-Term Seismicity at Volcanoes : The Ischia Island (Italy) Case

©2019. The Authors.

Bibliographische Detailangaben
Veröffentlicht in:Geophysical research letters. - 1984. - 46(2019), 24 vom: 28. Dez., Seite 14421-14429
1. Verfasser: Trasatti, E (VerfasserIn)
Weitere Verfasser: Acocella, V, Di Vito, M A, Del Gaudio, C, Weber, G, Aquino, I, Caliro, S, Chiodini, G, de Vita, S, Ricco, C, Caricchi, L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Geophysical research letters
Schlagworte:Journal Article degassing geodetic data inverse modelling magmatic source physics of volcanism resurgence
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520 |a Transient seismicity at active volcanoes poses a significant risk in addition to eruptive activity. This risk is powered by the common belief that volcanic seismicity cannot be forecast, even on a long term. Here we investigate the nature of volcanic seismicity to try to improve our forecasting capacity. To this aim, we consider Ischia volcano (Italy), which suffered similar earthquakes along its uplifted resurgent block. We show that this seismicity marks an acceleration of decades-long subsidence of the resurgent block, driven by degassing of magma that previously produced the uplift, a process not observed at other volcanoes. Degassing will continue for hundreds to thousands of years, causing protracted seismicity and will likely be accompanied by moderate and damaging earthquakes. The possibility to constrain the future duration of seismicity at Ischia indicates that our capacity to forecast earthquakes might be enhanced when seismic activity results from long-term magmatic processes, such as degassing 
650 4 |a Journal Article 
650 4 |a degassing 
650 4 |a geodetic data 
650 4 |a inverse modelling 
650 4 |a magmatic source 
650 4 |a physics of volcanism 
650 4 |a resurgence 
700 1 |a Acocella, V  |e verfasserin  |4 aut 
700 1 |a Di Vito, M A  |e verfasserin  |4 aut 
700 1 |a Del Gaudio, C  |e verfasserin  |4 aut 
700 1 |a Weber, G  |e verfasserin  |4 aut 
700 1 |a Aquino, I  |e verfasserin  |4 aut 
700 1 |a Caliro, S  |e verfasserin  |4 aut 
700 1 |a Chiodini, G  |e verfasserin  |4 aut 
700 1 |a de Vita, S  |e verfasserin  |4 aut 
700 1 |a Ricco, C  |e verfasserin  |4 aut 
700 1 |a Caricchi, L  |e verfasserin  |4 aut 
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