From: 3D numerical simulation of volcanic eruption clouds during the 2011 Shinmoe-dake eruptions
Parameter | Value |
---|---|
Gravitational body force per unit mass, g | 9.81 m s−2 |
Density of solid pyroclasts, σ | 1000 kg m−3 |
Specific heat of solid pyroclasts, Cvs | 1100 J kg−1 K−1 |
Specific heat of volcanic gas, Cvg | 1348 J kg−1 K−1 |
Specific heat of air, Cva | 713 J kg−1 K−1 |
Gas constant of volcanic gas, Rg | 462 J kg−1 K−1 |
Gas constant of air, Ra | 287 J kg−1 K−1 |
Altitude of vent | 1400 m |
Volatile content, ng0 | 3 wt% |
Magma temperature, T0 | 1273.15 K |
Initial mixture density, ρ0 | 5.74 kg m−3 |
Mass discharge rate,m0 | 1.5 × 106 kg s −1 |
Exit velocity, w0 | 134 m s−1 |
Vent diameter, D0 | 49 m |