Fig. 4
From: A physics-based source model for real-time tephra-dispersal forecasting for weak eruption plumes
Results related to the SMD for Runs 1-4. Upper row (a,d,g,j); the mass flux at the NBL normalized by the mass flux at the vent, and the guideline to emphasize differences to the reference Run 1 (blue dotted line). Middle row (b,e,h,k); the SMD from the eruption columns normalized by the mass flux at the vent. Lower row (c,f,i,l); the SMD from the downwind gravity currents normalized by the mass fluxes at the vent. The mass fluxes of each grainsize at the vent are \(7.3\times 10^5\) [kg/s] for Runs 1-3, and \(7.3 \times 10^3\)[kg/s] for Run 4. The results of different grainsize are shown in different colors (see legend in k)