From: Rapid emergency assessment of ash and gas hazard for future eruptions at Santorini Volcano, Greece

Model input parameter | Value | Description |
---|---|---|

Vent elevation | 113 m | From Pyle and Elliot, 2006 |

Exit temperature | 1000 K | Typical temperature of magmatic gases from dacitic magma |

Proportion of SO_{2}
| 5 % | As a proportion of erupted gas, the other gas being water |

Gas exit velocity | 10 m/s | Estimate made from typical values |

Gas exit density |
0.12 kg/m^{3}
| Density of water at 1000 K |

Vent diameter | 7 or 14 m | Given gas density and concentration, a 7 m diameter vent is required to emit 200 tons/day. To conserve mass, keeping temperature and velocity constant, an 800 tons/day emission requires a 14 m diameter |

Albedo | 0.25 | Fraction of total incident solar radiation reflected by the surface (typical value for grassland used) |

Bowen ratio | 5 | Net radiation at a surface (typical value for grassland used) |

Surface roughness | 0.15 m | Typical value for grassland used |