| Budget Amount *help |
¥26,000,000 (Direct Cost: ¥20,000,000、Indirect Cost: ¥6,000,000)
Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2014: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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| Outline of Final Research Achievements |
Magmas are the molten rocks and include bubbles and crystals. Volcanoes erupt various ways and eruption styles depend on the amount of bubbles in magmas. The bubble amount is subject to change during the magma ascent. This project aims to understand the mechanism determining the bubble amount during the magma ascent and explore a method to measure the bubble amount. Based on our model experiments, we submit equations estimating the amount of outgassing by the shear deformation and the decompression induced expansion. We also propose a model of triggered eruptions in which oscillation induces foam collapse. Finally, we find a regime of solid-like behavior of bubbly crystal-bearing fluid, in which S wave could propagate.
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