| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2012: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Outline of Final Research Achievements |
Impact craters and their ejecta morphologies are interpreted as a natural probe for obtaining knowledge on ancient surface and subsurface environments, because detailed morphologies of impact craters and their ejecta are sensitive to impact conditions and degradation processes.
We have conducted impact experiments on a layer of glass beads and sintering snow in the laboratory to investigate the morphology of the impact craters and their ejecta affected by the ambient pressure and target strength. Two distinct ejecta patterns were observed on the glass beads layer of both 50 and 100 micron depending on the ambient pressure. Crater morphology on sintered snow, especially the spall size, systematically depended on the target strength.
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