Figure 2
From: Instant snapshot of the internal structure of Unzen lava dome, Japan with airborne muography
Scheme of the airborne muography measurement of Heisei-Shinzan lava dome, Japan.
(a) The cross mark (Mu-A) indicates the hovering location. The triangle (S) indicates the 1994 spine. The aircraft was first directed toward the South-West direction (A) then flipped to be directed toward the North-West direction (B). The number indicates the elevation above sea level. The muon tracker was positioned toward the peak of the 1994 spine. (b) A photograph of the airborne muography measurement taken from the visual observation point. (c) Closer view of the measurement.
