Physical parameters (2): Different types of surface
activity
Basaltic activity
Fire fountain: central gas jet + magma
A few days; height = 400 m;
100 m/s to 200 m/s
Gas piston activity: Strombolian explosions
Bursting gas bubbles: 50 m/s to 100 m/s
Lava flows:
0.01 m/s to 1 m/s
Kilauea
Piton
de la
Fournaise
1977