Publication Date:
2022-05-24
Description:
Continuous GPS (CGPS) data, collected at Mt. Etna between
April 2012 and October 2013, clearly define inflation/deflation
processes typically observed before/after an eruption onset.
During the inflationary process from May to October 2013, a
particular deformation pattern localised in the upper North
Eastern sector of the volcano suggests that a magma intrusion
had occurred a few km away from the axis of the summit
craters, beneath the NE Rift system. This is the first time that
this pattern has been recorded by CGPS data at Mt. Etna. We
believe that this inflation process might have taken place
periodically at Mt. Etna and might be associated with the
intrusion of batches of magma that are separate from the
main feeding system. We provide a model to explain this unusual
behaviour and the eruptive regime of this rift zone,
which is characterised by long periods of quiescence followed
by often dangerous eruptions in which vents can open at low
elevation and thus threaten the villages in this sector of the
volcano.
Description:
Published
Description:
356-363
Description:
2V. Dinamiche di unrest e scenari pre-eruttivi
Description:
JCR Journal
Description:
restricted
Keywords:
Shallow intrusion beneath NE Rift system
;
Mt. Etna volcano
;
CGPS data
;
04. Solid Earth::04.08. Volcanology::04.08.06. Volcano monitoring
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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