| Budget Amount *help |
¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
More than 20 conduit structures are recognized in the summit crater of Miyakejima Japan. They can be grouped into three categories; effusive conduit, moderate-explosive conduit and strongly-explosive conduit based on their structure and associated products. The spectrum of the mechanical erosion in the uppermost part of the conduit is shown using this grouping. The result shows that the mechanical erosion of the conduit wall is concentrated in the part shallower than the fragmentation depth of magma in the conduit. Appling the conduit model of Miyakejima to other volcanoes, eruption process of several volcanoes such as Mt. Etna are reconstructed.
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