Study for the occurrence and forecasting of strong wind disasters at the surface induced by the downward movement of the high-speed layer in the higher levels
| Project/Area Number |
24651208
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Natural disaster science
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| Research Institution | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
TAKEMI Tetsuya 京都大学, 防災研究所, 准教授 (10314361)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 強風災害 / 大気境界層 / 乱流構造 / 運動量輸送 / 混合層 |
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| Research Abstract |
In order to analyze the phenomena in which strong winds at the surface are induced by the downward movement of the high-speed layer in the higher levels, observations have been made in the Ujigawa Open Laboratory, Disaster Prevention Research Institute, Kyoto University. As a result, in the near-neutral conditions, sometimes large-scale turbulence structures predominantly occur and corresponding strong winds blow at the surface. Strong winds at the surface were also observed after the passage of the ascending large-scale structure in the unstable conditions of the daytime. These phenomena are due to the downward transport of momentum from the high-speed layer in the higher levels. It is likely that similar phenomena are possible in the severe weather.
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Report
(3 results)
Research Products
(8 results)
