To evaluate the volcanic processes leading to the 25-26 October 2013 lava fountain at Mount Etna, we jointly investigated gravity, GPS, and DInSAR measurements covering the late-June to early-November time interval. We used finite element modeling to infer a shallow magmatic reservoir which (i) inflated since July 2013, (ii) fed the volcanic activity at the summit craters during 25-26 October, and (iii) deflated due to magma drainage related to this volcanic activity. We suggested that this reservoir belongs to a shallow volume, which is located beneath the summit area and is replenished by magma rising from deep reservoirs and fed the short-term volcanic activity, representing a persistent shallow magmatic plumbing system of Etna. In addition, the model results show that there is a large discrepancy between the erupted and shallow reservoir deflation volumes, which could be reasonably attributable to a highly compressible volatile-rich magma.

Greco F, Currenti G, Palano M, Pepe A, Pepe S (2016). Evidence of a shallow persistent magmatic reservoir from joint inversion of gravity and ground deformation data: The 25-26 October 2013 Etna lava fountaining event. GEOPHYSICAL RESEARCH LETTERS, 43(7), 3246-3253 [10.1002/2016GL068426].

Evidence of a shallow persistent magmatic reservoir from joint inversion of gravity and ground deformation data: The 25-26 October 2013 Etna lava fountaining event

Palano M
;
2016-01-01

Abstract

To evaluate the volcanic processes leading to the 25-26 October 2013 lava fountain at Mount Etna, we jointly investigated gravity, GPS, and DInSAR measurements covering the late-June to early-November time interval. We used finite element modeling to infer a shallow magmatic reservoir which (i) inflated since July 2013, (ii) fed the volcanic activity at the summit craters during 25-26 October, and (iii) deflated due to magma drainage related to this volcanic activity. We suggested that this reservoir belongs to a shallow volume, which is located beneath the summit area and is replenished by magma rising from deep reservoirs and fed the short-term volcanic activity, representing a persistent shallow magmatic plumbing system of Etna. In addition, the model results show that there is a large discrepancy between the erupted and shallow reservoir deflation volumes, which could be reasonably attributable to a highly compressible volatile-rich magma.
2016
Settore GEO/10 - Geofisica Della Terra Solida
Greco F, Currenti G, Palano M, Pepe A, Pepe S (2016). Evidence of a shallow persistent magmatic reservoir from joint inversion of gravity and ground deformation data: The 25-26 October 2013 Etna lava fountaining event. GEOPHYSICAL RESEARCH LETTERS, 43(7), 3246-3253 [10.1002/2016GL068426].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10447/636484
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