| Outline of Final Research Achievements |
This study consists of the following three parts. (1) observations of the 2018 lower East Rift Zone eruption of Kilauea Volcano, Hawaii, (2) experiments on lava flows containing bubbles at the Lamont-Doherty Earth Observatory (LDEO), and (3) a study of the onset of magma rise.
For (1), I visited Hawaii in 2018 and had the rare opportunity to observe the Lower East Rift Zone eruption that occurred that year. Based on infrared images of lava fountains observed during this eruption, we estimated that fragmentation is caused by a temperature drop due to the rapid expansion of volcanic gases, which cools the magma surface. For (2), I visited the LDEO in 2019 and conducted experiments on lava flows containing bubbles. The lava observed in (1) had a high volume fraction of bubbles, and the experiment was designed to simulate this situation. For (3), we co-authored a review paper summarizing the basic concepts in this field.
|
