Figure 1
From: Instant snapshot of the internal structure of Unzen lava dome, Japan with airborne muography
Topographic condition of Unzen volcano.
The path length distributions calculated for Heisei-Shinzan lava dome from the observation points Mu-L1 (a), Mu-L2 (b), and Mu-A (c) are plotted as a function of azimuth and elevation angles. The dotted lines labeled with S indicate the location of the 1994 spine. (d) The transmitted muon flux at an elevation angle range of 24 ± 12° is plotted as a function of the rock thickness in units of m water equivalent.
