Observations for winter lightning activity with upward leader
| Project/Area Number |
25820115
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Power engineering/Power conversion/Electric machinery
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| Research Institution | Kobe City College of Technology |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 雷観測 / リモートセンシング / 大気電気学 / 干渉計 / 冬季雷 |
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| Outline of Final Research Achievements |
The VHF broadband digital interferometer and the LF broadband receiver that have been used successfully for summer lightning, are upgraded to estimate charge regions and scale of lightning discharges in winter thunderstorms. A recording method of the VHF interferometer is changed from a trigger recording method to a continuous recording method. The new one visualizes details of recoil leaders that the current one has limitations to visualize, and estimates charge regions in thunderstorms. The LF receiver is suitable for an overview of horizontal lightning propagation. At the same time, it is not enough for visualizing details of lightning channel propagation. One of the reasons seems to be in frequency characteristic of the LF receiver. An antenna circuit in the LF receiver is improved and evaluated by test observations.
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Report
(4 results)
Research Products
(4 results)
