2010 Fiscal Year Final Research Report
Impact evaluation of Tokyo Metropolitan area on the occurrence of torrential rainfall in the Kanto district by using high density rain-gauge network
| Project/Area Number |
20500897
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geography
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| Research Institution | Tokyo Metropolitan University |
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Principal Investigator |
TAKAHASHI Hideo Tokyo Metropolitan University, 都市環境科学研究科, 教授 (40202155)
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| Co-Investigator(Kenkyū-buntansha) |
MIKAMI Takehiko 帝京大学, 文学部, 教授 (10114662)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 短時間強雨 / 東京都心域 / 地表面粗度 / 地上風系 / 冷気外出流 / 収束 / 事前予測 |
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| Research Abstract |
Statistical analyses of the intense rainfall frequency in the southern part of the Kanto district were performed by using dense rain-gauge data and radar data. Case analyses were also conducted on the localized torrential rainfall accompanied by thunder storm in the Tokyo Metropolitan area. It has been understood that the increase in the occurrence frequency of intense rainfall is obvious in the evening to midnight in the Ward area of Tokyo, and intense rainfall area with smaller spatial scale frequently appears on the leeward side of the Tokyo Metropolitan area. Moreover, as for the intense rainfall case in the Tokyo Metropolitan area, it was pointed out that the stagnation of gust front near the intense rainfall area due to large urban canopy was one of the possible causes for the maintenance and stagnation of intense rainfall area.
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Research Products
(48 results)
