Continuous GPS (CGPS) data, collected at Mt. Etna betweenApril 2012 and October 2013, clearly define inflation/deflationprocesses typically observed before/after an eruption onset.During the inflationary process from May to October 2013, aparticular deformation pattern localised in the upper NorthEastern sector of the volcano suggests that a magma intrusionhad occurred a few km away from the axis of the summitcraters, beneath the NE Rift system. This is the first time thatthis pattern has been recorded by CGPS data at Mt. Etna. Webelieve that this inflation process might have taken placeperiodically at Mt. Etna and might be associated with theintrusion of batches of magma that are separate from themain feeding system. We provide a model to explain this unusualbehaviour and the eruptive regime of this rift zone,which is characterised by long periods of quiescence followedby often dangerous eruptions in which vents can open at lowelevation and thus threaten the villages in this sector of thevolcano.
|Titolo:||Evidence of a shallow magma intrusion beneath the NE Rift system of Mt. Etna during 2013|
|Data di pubblicazione:||2016|
|Appare nelle tipologie:||1.1 Articolo in rivista|