The profile of tephra concentration along a volcanic plume (ie, the tephra segregation
profile) is an important source parameter for the simulation of tephra transport and …

Volcanic columns produced by explosive eruptions commonly reach, at some stage, a
collapse regime with associated pyroclastic density currents propagating on the ground. The …

Traditionally, tephra transport and dispersal models have evolved decoupled (offline) from
numerical weather prediction models. There is a concern that inconsistencies and …

We carry out a parametric study in order to identify and quantify the effects of uncertainties
on pivotal parameters controlling the dynamics of volcanic plumes. The study builds upon …

Volcanic plumes from small and moderate eruptions represent a challenge in the study of
plume morphology due to eruption source parameter uncertainties and atmospheric …

Identifying the microstructural characteristics of volcanic ash particles is key in developing
our understanding of their production, transport and impact. Volcanic glass in ash clouds …

Fragmentation dynamics can be described by the size distribution of the fragments
generated during an explosion. We approach the problem of magma fragmentation during a …

The proximal Plinian fall deposits of the Campanian Ignimbrite (CI; 38 ky, Fedele et al.,
2008) and Pomici di Base (PdB; 18 ky, Bertagnini et al., 1998) have been investigated in …

We describe the discrete ballistic and wind‐advected products of a small, but exceptionally
well‐characterized, explosive eruption of wall‐rock‐derived pyroclasts from Kīlauea volcano …

A physics-based model to estimate source conditions for a tephra-dispersal model is
developed. The source condition is generally expressed by a distribution of released …