A Model for Buoyant Tephra Plumes Coupled to Lava Fountains With an Application to the 29th of August 2011 Paroxysmal Eruption at Mount Etna, Italy. - Snee, E.; Degruyter, W.; Bonadonna, C.; Scollo, S.; Rossi, E.; Freret‐Lorgeril, V. (Journal of Geophysical Research. Solid Earth, 2021)