| Budget Amount *help |
¥20,280,000 (Direct Cost: ¥15,600,000、Indirect Cost: ¥4,680,000)
Fiscal Year 2014: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2011: ¥10,790,000 (Direct Cost: ¥8,300,000、Indirect Cost: ¥2,490,000)
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| Outline of Final Research Achievements |
We have developed a high speed optical imaging system specifically designed for studying the lightning attachment process. We have installed the system at the International Center for Lightning Research and Testing (ICLRT), located in north-central Florida for 4 years and have succeeded in observing the lightning attachment processes for more than 100 return strokes contained either in rocket-triggered lightning and natural lightning discharges. We have analyzed those observed data and obtained several new findings on the lightning attachment processes, particularly, the return stroke initiation processes. Based on those results, we have proposed a new return stroke model by taking into account the return stroke initiation processes.
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