ERUPTION ID：18-0411

2023.08.21 / 最終更新日：2024.10.29

BASIC INFORMATION

Fig. 2-1 Accumulated ash fall distribution (animation).

Fig. 2-2 Ash fall duration time (animation).

Fig. 2-3 Temporal change of total ash fall amount.

Fig. 2-4 Temporal change of total ash fall area.

Fig. 4-3 RHI images of radar reflectivity factor ZH (animation).

Fig. 4-4 RHI images of Doppler velocity VD(animation).

Fig. 6-1 Density plots of the particle size and fall velocity of volcanic ash particles.

Fig. 6-2 Gamma fitting curves of observed particle size distributions.

Fig. 6-3 Temporal change of gamma PSD parameters and integrated PSD parameters.

Fig. 6-4 Temporal change of ash fall rate and PSD.

Fig. 6-5 Histograms of observed gamma PSD parameters.

Fig. 6-6 Histograms of observed normalized gamma PSD parameters.

Fig. 7-1 Atmospheric instability in the upper atmosphere shown by the emagram.