Search results for "etna"

Volcanic plume monitoring at mount Etna by diffusive(passive)sampling

2004

This paper reports the use of diffusive tubes in determining HF, HCI, and SO2 in the volcanic plume of Mount Etna in an attempt to highlight the potential of this method in studying volcanoes. In a first application a network of 18 diffusive tubes was installed on Etna's flanks, aimed at evaluating the atmospheric dispersion of the volcanic plume on a local scale. Results showed a monotonic decrease in volatile air concentrations with distance from the craters (HF from 0.15 to <0.003 μmol m-3 , HCl from 2 to <0.01 μmol m -3, and SO2 from 11 to 0.04 μmol m -3 ), revealing the prevalently volcanic contribution. Matching of SO2/HCl and HCl/HF volatile ratios with contemporaneous measurements a…

Atmospheric CFCs and geogenic HCFCs in gas discharges from Mt Etna and Vulcano Island (Italy)

2013

Real-time measurements of gaseous elemental mercury at the summit area of Mt Etna volcano (Italy): preliminary results

2013

Geoscience workshops on Sicilian active volcanoes: implementing the school education through collaboration among different institutions

2017

The attention devoted to our valuable geological heritage land has been often lacking in Italy. We have experiencedit, as field experimentalist or as science teachers. So, we need to improve the knowledge of Earth-science at anyeducational level and we think an empiric approach, can be the proper beginning for a successful scientific cognitivepath. The geo-tourism essentially attracts foreigners. During our field experiences on active volcanoes, we are stillsurprised by local visitors who enjoy seasonal activities, like skiing on the flanks of Etna, or doing sea activities on thecoastal beaches at Vulcano and Stromboli, but who are not interested in the ongoing volcanic processes. Consequen…

Intervento di ripristino della copertura arborea su un'area del parco dell'Etna interessata da colata lavica recente.

1996

The planning and results of a reafforestation carried out on a private area occurring in the Etna Wildlife Reserve C zone are presented. The area consists of a terraced slope 70.000 square meters wide, made out of a lava flow part which dates back to 1983. At first were planted and seeded Astragalus siculus Biv. and Festuca circummediterranea Patzke, in order to set a pioneer vegetation cover; then were planted some aboreal species having a leading role in the physiognomical characterisation of the Etna landscape, like Betula aetnenis Raf., Pinus laricio Poiret, Populus tremula L. The success of the intervention is shown by the fairly quick penetration of 26 species coming from the neighbou…

Etna. Miti e riti della "montagna" sacra

2019

L’Etna con la sua immensa mole fumante, la sua incessante attività vulcanica, il potere distruttivo e generativo delle sue lave, i suoi mutevoli paesaggi, ha costituito nei millenni un riferimento costante dell’immaginario isolano, offrendosi come inesauribile sorgente di affabulazione mitopoietica, teatro epico e lirico di vita e di morte, soggetto e scenario di riti, di miti, di leggende molteplici. Colosso dall’indole incostante e dalla potenza terrifica, vorace distruttore di tuguri e palazzi costruiti della sua stessa pietra, di campi e di piantagioni prima nutriti dalla sua stessa lava, l’Etna contiene e rappresenta, materialmente e simbolicamente, gli opposti: l’alto e il basso, la t…

Etna International Training School of Geochemistry, 2018. Science meets practice.

2018

Mount Etna, located in eastern Sicily, is the largest stratovolcano in Europe and one of the most intensely degassing volcanoes of the world (Allard et al., 1991; Gerlach, 1991). In particular, previous estimates highlighted that Mt Etna emits about 1.6 % of global H2O fluxes from arc volcanism (Aiuppa et al., 2008) and 10 % of global average volcanic emission of CO2 and SO2 (D’Alessandro et al., 1997; Caltabiano et al., 2004). Furthermore, Gauthier and Le Cloarec (1998) underscored that Mt. Etna is an important source of volcanic particles, having a mass flux of particle passively released from the volcano during non-eruptive period estimated between 7 to 23 tons/day (Martin et al., 2008; …

Dissolved major and trace elements in meteoric depositions on the flanks of Mt. Etna (Italy): the impact of volcanic activity on the environment

2019

In the framework of the “Save the Etna World” research project, which investigates the impact of the volcanic activity on the surrounding environment, three bulk collectors were deployed on the flank of the Mt. Etna volcano to collect the meteoric depositions. The sampling sites were at distances between 5.5 and 13 km from the summit vents of the volcano on its eastern flank, that is the most exposed to the volcanic plume due to the high-altitude prevailing winds direction. The sites were selected in order to have a gradient of exposition with respect to the volcanic emissions, the most exposed being CIT, the intermediate ILI and the least NIC. Samples were collected monthly from July 2017 …

A window into the high velocity body (HVB) beneath Mt. Etna:a cntribution from the study of cognate xenoliths in historical lavas

2009

Patterns in the recent 2007-2008 activity of Mount Etna volcano investigated by integrated geophysical and geochemical observations

2010

[1] Seismic, deformation, and volcanic gas observations offer independent and complementary information on the activity state and dynamics of quiescent and eruptive volcanoes and thus all contribute to volcanic risk assessment. In spite of their wide use, there have been only a few efforts to systematically integrate and compare the results of these different monitoring techniques. Here we combine seismic (volcanic tremor and long-period seismicity), deformation (GPS), and geochemical (volcanic gas plume CO2/SO2 ratios) measurements in an attempt to interpret trends in the recent (2007–2008) activity of Etna volcano. We show that each eruptive episode occurring at the Southeast Crater (SEC)…