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Etna update, 28 May 2008 28 May 2008

Posted by admin in activity reports, eruptions, Etna, Italy, volcanoes.
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Things appear to be quiet at Etna right now, after some weeks of occasionally spectacular activity. The last week has seen episodes of strong tremor and strombolian activity with ash emission and small lava flows associated with the new eruptive fissures that have been the focus of the eruptions that have been taking place since April. The latest activity report (PDF) from the Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Catania indicate that only a single new lava flow, some 5.75km in length, could be observed from an overflight that took place this morning, and that activity at the summit craters was limited to degassing and fumaroles. Geochemical analysis (PDF) indicates that no new eruptive phase is currently under way: ‘The geochemical data acquired during the last week of observations do not give evidence of any variations in activity of particular importance … The slight decrease in helium isotopes in peripheral gas samples and the constant level of CO2 emissions from the soil would seem to indicate the absence of new phases of the recharging of deep magma (5-13 km below sea level)’. Toulouse VAAC reports indicate no current ash emissions.

Global Volcanism Program: Etna – summary information for Etna (0101-06=)
Istituto Nazionale di Geofisica e Vulcanologia – Sezione di Catania – INGV-CT is the volcanological authority responsible for Etna; current activity reports are here
Toulouse Volcanic Ash Advisory Centre – volcanic ash advisories for the area that includes Etna

The Volcanism Blog