scholarly journals The VOL-CALPUFF model for atmospheric ash dispersal: 2. Application to the weak Mount Etna plume of July 2001

2008 ◽  
Vol 113 (B3) ◽  
Author(s):  
S. Barsotti ◽  
A. Neri
Keyword(s):  
Mount Etna ◽  
Ash Dispersal

scholarly journals On the use of plume models to estimate the flux in volcanic gas plumes

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Julia Woitischek ◽  
Nicola Mingotti ◽  
Marie Edmonds ◽  
Andrew W. Woods
Keyword(s):  
Electrochemical Sensors ◽  
Measurement Techniques ◽  
Flux Measurement ◽  
Hydrothermal Systems ◽  
Mount Etna ◽  
Volcanic Gas ◽  
Gas Flux ◽  
Convective Structures ◽  
Video Images ◽  
Villarrica Volcano

AbstractMany of the standard volcanic gas flux measurement approaches involve absorption spectroscopy in combination with wind speed measurements. Here, we present a new method using video images of volcanic plumes to measure the speed of convective structures combined with classical plume theory to estimate volcanic fluxes. We apply the method to a nearly vertical gas plume at Villarrica Volcano, Chile, and a wind-blown gas plume at Mount Etna, Italy. Our estimates of the gas fluxes are consistent in magnitude with previous reported fluxes obtained by spectroscopy and electrochemical sensors for these volcanoes. Compared to conventional gas flux measurement techniques focusing on SO2, our new model also has the potential to be used for sulfur-poor plumes in hydrothermal systems because it estimates the H2O flux.

scholarly journals The fate of volcanic ash: premature or delayed sedimentation?

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Eduardo Rossi ◽  
Gholamhossein Bagheri ◽  
Frances Beckett ◽  
Costanza Bonadonna
Keyword(s):  
Residence Time ◽  
Volcanic Ash ◽  
Volcanic Eruptions ◽  
Theoretical Description ◽  
Particle Sedimentation ◽  
Weather Modeling ◽  
Explosive Volcanic Eruptions ◽  
Travel Distances ◽  
Ash Dispersal

AbstractA large amount of volcanic ash produced during explosive volcanic eruptions has been found to sediment as aggregates of various types that typically reduce the associated residence time in the atmosphere (i.e., premature sedimentation). Nonetheless, speculations exist in the literature that aggregation has the potential to also delay particle sedimentation (rafting effect) even though it has been considered unlikely so far. Here, we present the first theoretical description of rafting that demonstrates how delayed sedimentation may not only occur but is probably more common than previously thought. The fate of volcanic ash is here quantified for all kind of observed aggregates. As an application to the case study of the 2010 eruption of Eyjafjallajökull volcano (Iceland), we also show how rafting can theoretically increase the travel distances of particles between 138–710 μm. These findings have fundamental implications for hazard assessment of volcanic ash dispersal as well as for weather modeling.

Chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Mount Etna, Sicily

1980 ◽  
Vol 43 (330) ◽  
pp. 765-770 ◽  
Author(s):  
A. M. Duncan ◽  
R. M. F. Preston
Keyword(s):  
Trace Element ◽  
Mount Etna ◽  
Chemical Variation ◽  
Etna Volcano ◽  
Trace Element Chemistry ◽  
Sector Zoning ◽  
Steady Decrease ◽  
Element Chemistry

SummaryThe chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Etna volcano is described. The phenocrysts show a limited, but distinct trend in chemical variation from calcic-augite in the hawaiites to augite in the benmoreites. The trend of this variation is unusual, being one of Mg-enrichment with differentiation of the magma. Ca shows a steady decrease in the clinopyroxenes from the hawaiites to the benmoreites. Na, however, shows little chemical variation in the pyroxenes. The trace element chemistry is briefly examined. The clinopyroxenes show well-developed oscillatory and sector zoning. The basal {11} sectors are enriched in Si and Mg and depleted in Ti, Al, and Fe relative to the {100}, {110}, and {010} prism sectors.

scholarly journals Modeling the effects of eruptive and seismic activities on flank instability at Mount Etna, Italy

2013 ◽  
Vol 118 (10) ◽  
pp. 5252-5273 ◽  
Author(s):  
F. Bozzano ◽  
M. Gaeta ◽  
L. Lenti ◽  
S. Martino ◽  
A. Paciello ◽  
...  
Keyword(s):  
Mount Etna

The epidemiology of amyotrophic lateral sclerosis in the Mount Etna region: a possible pathogenic role of volcanogenic metals

2016 ◽  
Vol 23 (5) ◽  
pp. 964-972 ◽  
Author(s):  
A. Nicoletti ◽  
R. Vasta ◽  
V. Venti ◽  
G. Mostile ◽  
S. Lo Fermo ◽  
...  
Keyword(s):  
Amyotrophic Lateral Sclerosis ◽  
Mount Etna ◽  
Pathogenic Role ◽  
Lateral Sclerosis

scholarly journals Multiple Sclerosis in the Mount Etna Region: Possible Role of Volcanogenic Trace Elements

PLoS ONE ◽  
2013 ◽  
Vol 8 (12) ◽  
pp. e74259 ◽  
Author(s):  
Alessandra Nicoletti ◽  
Elisa Bruno ◽  
Martina Nania ◽  
Edoardo Cicero ◽  
Silvia Messina ◽  
...  
Keyword(s):  
Multiple Sclerosis ◽  
Trace Elements ◽  
Mount Etna
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