Evidence of gas in fire fountains:
Plume above fire fountains
Reticulite
Peak in CO2 during fire fountains
Upwards motion of fire fountains
simultaneously of drainage in conduit
characteristic of an annular flow
Sudden
stopping of fire fountains: in less than a few minutes
Plume above
curtain of fire at
Krafla (Iceland)
Reticulite (high
fire fountains)
drainback of
lava (Kilauea)
A laboratory volcano (3): origin of fire fountains