This dataset examines the distribution and characteristics of areas affected by ballistic fallout from major explosions and paroxysms at Stromboli. By analyzing historical and recent explosive events, it provides detailed information on the distances, directions, and extents of ballistic fallout, including associated uncertainties. The data draws from scientific literature, monitoring records, and field observations, offering a comprehensive perspective on ballistic dispersal patterns at Stromboli.
Two pre-existing catalogs inform this study. The "historical catalog" (Bevilacqua et al., 2020) covers 36 paroxysms from 1879 to 1960, based on over a hundred literature sources. The accompanying Supporting Material S1 provides excerpts from original sources, offering unedited information on the ballistic fallout of the historical paroxysms. We mapped 20 of these paroxysms, while the major explosions listed in the historical catalog were not possible to map because of insufficient data. The "recent catalog" (Bevilacqua et al., 2023) documents Stromboli's explosions over the ca. fifty years from 1970 to 2023. This recent dataset includes 51 major explosions and 4 well documented paroxysms, enabling us to map 43 of these major explosions and all the paroxysms.
Our analysis refrains from modeling the multiphase explosive mixture at the source or projectile dynamics, although available knowledge on projectile dynamics in the literature was considered in defining the lower limit of the clast size. We exclusively relied on available data from remote observations, field reports, eyewitness accounts, and surveillance imagery. The present dataset categorizes each explosion's ballistic fallout area by mapping it with circular sectors. These sectors represent areas affected by the largest projectiles (lithic and scoria clasts exceeding 5-10 cm), while smaller clasts and pumice fallout are not considered. The distribution of projectiles is mapped using maximum distances and directional dispersal patterns, and the areal density distribution of the projectiles was not considered in this analysis.
