| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
To understand the dynamics of eruption cloud and the mechanism of volcanic ash associated with explosive volcanic eruptions, we have developed a numerical model and performed numerical simulations. The 3D model developed in this study solve the fluid dynamics of eruption cloud and the transport of volcanic ash in parallel. Our model can reproduce observed data of various eruptions into arbitrary atmospheric conditions: the strong eruption (the Pinatubo 1991 eruption), the moderate eruption (the Kelud 2014 eruption), and the weak eruption (the Shinmoe-dake 2011 eruption). Our model is considered to be a useful tool that links eruption condition and field observations. In addition, we have quantified the effects of wind on the heights of eruption cloud, and determined the empirical constants for the simple model of eruption cloud.
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