| Project/Area Number |
26450219
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Forest science
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| Research Institution | Forestry and Forest Products Research Institute |
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Principal Investigator |
Suzuki Satoru 国立研究開発法人森林総合研究所, 森林防災研究領域, 室長 (50353735)
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| Co-Investigator(Kenkyū-buntansha) |
黒川 潮 国立研究開発法人森林総合研究所, 九州支所, グループ長 (10353674)
服部 康男 一般財団法人電力中央研究所, 地球工学研究所, 上席研究員 (60371473)
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| Co-Investigator(Renkei-kenkyūsha) |
Tamura Yukio 東京工芸大学, 工学部, 客員教授 (70163699)
Yoshida Akihito 東京工芸大学, 工学部, 准教授 (90329219)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 竜巻 / 樹木被害 / 藤田スケール / 限界風速 / 突風 / EFスケール / ラージエディシミュレーション / 日本版改良藤田スケール / 幹折れ / 根返り / 枝折れ / Fスケール / 強風 / ファージエディシミュレーション |
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| Outline of Final Research Achievements |
In order to evaluate the intensity of the tornado from the tree damage, we developed a simple table that associates the situations of the damage of trees with the wind speed that causes damage. Damage such as snapping, turn over, branch breaking, etc. usually occurs in trees by gusts such as tornadoes. We investigated each trees of park trees, street trees and garden trees, and in the forest area we used historical damage data to calculate the damaged wind speed for each damage type for each tree. Due to the large fluctuation of the damaged wind speeds, after dividing into two categories, coniferous trees and broadleaved trees, the representative wind speed, the lower limit value, and the upper limit value were estimated by adding statistical processing.
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