Tephra dispersal and fallout reconstructed integrating field, radar and satellite data: Application to the 23 November 2013 Etna paroxysm.

Poret M., Costa A., Corradini S., Merucci L., Andronico D., Vulpiani G., Scollo S., Cristaldi A., Montopoli M.
  Giovedì 14/09   09:00 - 11:30   Aula A210   IV - Geofisica e fisica dell'ambiente
On 23rd November 2013 Etna produced a plume that dispersed tephra towards Calabria allowing samples to be collected up to $\sim 160$ km. Ash was also observed in Salento ($\sim 400$ km of distance) and reported by a pilot over the Adriatic Sea. The study aims at reconstructing the Eruption Source Parameters through the FALL3D ash dispersal model integrating field, radar, and satellite, covering the full tephra size range ($i.e.$, from cm to $\mu$m). The best-fit results return a maximum column height of $\sim 11.3$ km a.s.l., a maximum mass flux of $\sim$ 3.7 $\times 10^{6}$ kg/s, and a total erupted mass of $\sim 4.0 \times 10^{9}$ kg.