[O07-P02] Considering controlling factors of eruption styles through syrup eruption experiments
Keywords:Volcano, Analog experiment, Eruption dynamics
The model volcano consists of a PET bottle and a transparent plastic tube. The tube is fixed to the bottle cap by an original connector. The tube end is initially closed by a rubber plug. When sufficient pressure builds up in the bottle by foaming, it spontaneously opens and an eruption starts.
In the previous method, we poured the syrups into the bottle one after another and closed the cap. We left a sufficient empty volume to prevent overflowing. Then, the tube needed to extend to the bottom of the bottle to lead a syrup eruption instead of a short gas burst. These points have been pointed out to be unrealistic.
We have developed a new connector, which allows to input a second syrup into an arbitral position of the reservoir containing the first syrup and output the mixture upward into the conduit. Then, we can reproduce various eruption styles in better controlled and more realistic ways. We are going to use this apparatus in an experimental volcanology seminar for the graduate students in volcanology. We report the results and effects of the seminar as well.