Endogenous magma degassing and storage at Mount Etna

Time-resolved seismic tomography detects magma intrusions at Mount Etna.

The continuous volcanic and seismic activity at Mount Etna makes this volcano an important laboratory for seismological and geophysical studies. We used repeated three-dimensional tomography to detect variations in elastic parameters during different volcanic cycles, before and during the October 2002-January 2003 flank eruption. Well-defined anomalous low P- to S-wave velocity ratio volumes we...

Lava flows impact prediction at Mount Etna by Cellular Automata

Millions of people live either on or in the surrounding areas of about six hundred worldwide volcanoes, which are known to be capable of renewed activity. The individuation of those areas that are more likely to be interested by new events is of fundamental relevance for mitigating possible consequences, both in terms of loss of human lives and material properties. Here we show a new methodolog...

Comparing satellite and ground-based observations of paroxysmal degassing events at Etna volcano, Italy

Using Magma Mixing/Mingling Evidence for Understanding Magmatic Evolution at Mount Bidkhan Stratovolcano (South-East Iran)

Mount Bidkhan stratovolcano is located in the central Iranian volcanic belt. It is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. Textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. Evidences such as xenocrystic high Al+Ti clinopyrox...

Magma degassing during the Plinian eruption of Novarupta, Alaska, 1912

[1] We have modeled the nucleation and isothermal growth of bubbles in dacite from the 1912 Plinian eruption of Novarupta, Alaska. Bubble growth calculations account for the exsolution of H2O and CO2, beginning with bubble nucleation and ending when bubble sizes reproduced the observed size distribution of vesicles in Novarupta pumice clasts. Assuming classical nucleation theory, bubbles nuclea...