scholarly journals A year of lava fountaining at Etna: Volumes from SEVIRI

2012 ◽  
Vol 39 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
G. Ganci ◽  
A. J. L. Harris ◽  
C. Del Negro ◽  
Y. Guehenneux ◽  
A. Cappello ◽  
...  
Keyword(s):  
Lava Fountaining

scholarly journals 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

2016 ◽  
Vol 43 (7) ◽  
pp. 3246-3253 ◽  
Author(s):  
Filippo Greco ◽  
Gilda Currenti ◽  
Mimmo Palano ◽  
Antonio Pepe ◽  
Susi Pepe
Keyword(s):  
Ground Deformation ◽  
Joint Inversion ◽  
Lava Fountaining ◽  
Magmatic Reservoir

scholarly journals The Relationship Between Lava Fountaining and Vent Morphology for the 2014–2015 Holuhraun Eruption, Iceland, Analyzed by Video Monitoring and Topographic Mapping

2018 ◽  
Vol 6 ◽  
Author(s):  
Tanja Witt ◽  
Thomas R. Walter ◽  
Daniel Müller ◽  
Magnús T. Guðmundsson ◽  
Anne Schöpa
Keyword(s):  
Video Monitoring ◽  
Topographic Mapping ◽  
Lava Fountaining ◽  
The Relationship

A model for gravity changes induced by lava fountaining at Mt Etna

2021 ◽  
Author(s):  
Luigi Passarelli ◽  
Mehdi Nikkhoo ◽  
Eleonora Rivalta ◽  
Corine Frischknecht ◽  
Costanza Bonadonna ◽  
...  
Keyword(s):  
Magma Chamber ◽  
Foam Layer ◽  
Lava Fountain ◽  
Gas Accumulation ◽  
Lava Fountaining ◽  
Gravity Changes ◽  
Gravity Measurements ◽  
Mt Etna ◽  
Lava Fountains ◽  
Gravity Signal

<div> <p><span>Lava fountains represent a common eruptive phenomenon at basaltic volcanoes, which consist of jets of fluid lava ejected into the atmosphere from active vents or fissures. They are driven by rapid formation and expansion of gas bubbles during magma ascent. The dynamics of lava fountains is thought to be controlled by the gas accumulation in the foam layer at the top of a shallow magmatic reservoir, which eventually collapses triggering the lava fountaining. Gravity measurements taken from a location close to summit of Mt. Etna during the 2011 lava fountain episodes showed a pre-fountaining decrease of the gravity signal. The interplay between gas accumulation in the foam layer and its subsequent exsolution in the conduit has been interpreted as the mechanism producing the gravity decrease and eventually leading to the foam collapse and onset of the lava fountaining activity. Gravity measurements have proved helpful in recording the earliest phases anticipating the lava fountain episodes and inferring the amount of gas involved. However, more accurate estimates of the accumulating and ascending gas volume and total magma mass require considering the possible effect of non-spherical magma chamber geometries and magma compressibility. </span></p> </div><div> <p><span>Under task 4.4 of the H2020 NEWTON-g project, we are accomplishing a detailed study aimed to simulate the gravity signal produced in the stage prior to a lava fountain episode, through a magma chamber - conduit model. We use a prolate ellipsoidal chamber matching the inferred shape of the shallow chamber active at Mt. Etna during the lava fountain episodes, and calculate the surface gravity changes induced by inflow of new magma into the chamber-conduit system. We use a two-phase magma with fixed amount of gas mass fraction and account for magma compressibility. We find that a realistic chamber shape and magma compressibility play a key role and must be considered to produce realistic gravity changes simulations. We combine our physical model with empirical distributions of recurrence time and eruption size of the past lava fountains at Mt. Etna to stochastically simulate realistic time series of gravity changes. The final goal of this study is to develop a prediction model for the amount of magma and duration of lava fountains at Mt. Etna.</span></p> </div>

scholarly journals An unloading foam model to constrain Etna's 11-13 January 2011 lava fountaining episode

2011 ◽  
Vol 116 (B11) ◽  
pp. n/a-n/a ◽  
Author(s):  
S. Calvari ◽  
G. G. Salerno ◽  
L. Spampinato ◽  
M. Gouhier ◽  
A. La Spina ◽  
...  
Keyword(s):  
Lava Fountaining ◽  
Foam Model

scholarly journals Aerosol formation in basaltic lava fountaining: Eyjafjallajökull volcano, Iceland

2012 ◽  
Vol 117 (D20) ◽  
Author(s):  
Evgenia Ilyinskaya ◽  
Robert S. Martin ◽  
Clive Oppenheimer
Keyword(s):  
Basaltic Lava ◽  
Aerosol Formation ◽  
Lava Fountaining

scholarly journals Balancing bulk gas accumulation and gas output before and during lava fountaining episodes at Mt. Etna

2015 ◽  
Vol 5 (1) ◽  
Author(s):  
Daniele Carbone ◽  
Luciano Zuccarello ◽  
Alfio Messina ◽  
Simona Scollo ◽  
Hazel Rymer
Keyword(s):  
Gas Accumulation ◽  
Lava Fountaining ◽  
Mt Etna

scholarly journals Separating the thermal fingerprints of lava flows and simultaneous lava fountaining using ground‐based thermal camera and SEVIRI measurements

2013 ◽  
Vol 40 (19) ◽  
pp. 5058-5063 ◽  
Author(s):  
Gaetana Ganci ◽  
Mike R. James ◽  
Sonia Calvari ◽  
Ciro Del Negro
Keyword(s):  
Lava Flows ◽  
Thermal Camera ◽  
Lava Fountaining

Infrasound reveals transition to oscillatory discharge regime during lava fountaining: Implication for early warning

2013 ◽  
Vol 40 (12) ◽  
pp. 3008-3013 ◽  
Author(s):  
Giacomo Ulivieri ◽  
Maurizio Ripepe ◽  
Emanuele Marchetti
Keyword(s):  
Early Warning ◽  
Lava Fountaining ◽  
Discharge Regime
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