Joining accommodating unbalancing tracking and boundary making
From 12 October onward, an almost persistent effusive activity took place from a number of vents opened on the south of SEC.
Moreover, in this case, the eruptive fissure propagated inside the Valle del Bove, producing the long-lived 2008–2009 eruption that lasted 419 days (the longest eruption since 1991–1993) and that emitted 68–74 × 108.5 GW (Fig. The 3 major eruptions (2004–2005, 2006, and 2008–2009; grey fields in Fig.
Few months after the 2004 eruption, between November 2005 and January 2006, the amplitude of volcanic tremor increased abruptly, although neither effusive nor paroxysmal activity was observed at the summit vents.
Following this intrusive event, minor explosive activity occurred in the summit area (Bocca Nuova – BN- and Voragine –VOR - craters; Fig.
The rate at which deeply-sourced magma enters a magmatic system (magma supply rate) and the rate at which it comes out of it (magma output rate) are two essential parameters for estimating the endogenous growth of a volcano and for predicting its behaviour in the future.
These two parameters determine whether a magma chamber is in non-equilibrium steady state (i.e the magma input equal to the output), or whether it is subject to accumulation (pressurization) or emptying (depressurization) phenomena, that necessarily have a strong control on the type and timescale of surface activity.
Etna over different timescale (from decades to days), but none looked at the relationships with the volcano deformation over the same timescales.
(c) Coeval MODIS-MIROVA image showing the thermal anomaly produced by the lava flow descending on the Valle del Bove. 2, the thermal flux recorded on 17 November 2006 was produced by a magma output rate, Q suggests the empting of a shallow magma chamber consistent with a stage of deflation of the volcano edifice, as measured by GPS network (cfr. (MODIS Level 1b radiance data courtesy of LANCE-MODIS system https://lance-modis.gov/; Base Map data courtesy of Google)..
Geophysical, geochemical and petrologic data suggest that the magma feeding the 2004–2005 activity was likely to have been stored in the shallow plumbing system during the 20 activity, where it experienced volatile loss and extensive crystallization.
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Search for joining accommodating unbalancing tracking and boundary making:
In this work we used thermal and SO flux data, derived from satellite measurements, to calculate the magma input and output rates of Mt. We found that during the analysed period more magma was supplied than erupted, resulting into an endogenous growth rate equal to 22.9 ± 13.7 × 10.