TY  - JOUR
PY  - 2015//
TI  - Volcano seismicity and ground deformation unveil the gravity-driven magma discharge dynamics of a volcanic eruption
JO  - Nature communications
A1  - Ripepe, Maurizio
A1  - Donne, Dario Delle
A1  - Genco, Riccardo
A1  - Maggio, Giuseppe
A1  - Pistolesi, Marco
A1  - Marchetti, Emanuele
A1  - Lacanna, Giorgio
A1  - Ulivieri, Giacomo
A1  - Poggi, Pasquale
SP  - e6998
EP  - e6998
VL  - 6
IS  - 
N2  - Effusive eruptions are explained as the mechanism by which volcanoes restore the equilibrium perturbed by magma rising in a chamber deep in the crust. Seismic, ground deformation and topographic measurements are compared with effusion rate during the 2007 Stromboli eruption, drawing an eruptive scenario that shifts our attention from the interior of the crust to the surface. The eruption is modelled as a gravity-driven drainage of magma stored in the volcanic edifice with a minor contribution of magma supplied at a steady rate from a deep reservoir. Here we show that the discharge rate can be predicted by the contraction of the volcano edifice and that the very-long-period seismicity migrates downwards, tracking the residual volume of magma in the shallow reservoir. Gravity-driven magma discharge dynamics explain the initially high discharge rates observed during eruptive crises and greatly influence our ability to predict the evolution of effusive eruptions.<p />  <p>Language: en</p>
LA  - en
SN  - 2041-1723
UR  - http://dx.doi.org/10.1038/ncomms7998
ID  - ref1
ER  -