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Hydroclimatic conditions during the first half of the 20th century in the bonin (ogasawara) islands
http://hdl.handle.net/10748/3826
http://hdl.handle.net/10748/3826f9f8e05f-a277-4c36-834a-b68ad98d0e4e
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
20005-44-015.pdf (854.7 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||
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| 公開日 | 2010-11-30 | |||||||||
| タイトル | ||||||||||
| タイトル | Hydroclimatic conditions during the first half of the 20th century in the bonin (ogasawara) islands | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | hydroclimate | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | potential evaporation | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | wetness index | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | small pan evaporation | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | the Bonin (Ogasawara) Islands | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | departmental bulletin paper | |||||||||
| 著者 |
Iijima, Yoshihiro
× Iijima, Yoshihiro
× Yakabe, Yu
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| 著者(ヨミ) |
イイジマ, ヨシヒロ
× イイジマ, ヨシヒロ× ヤカベ, ユウ |
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| 抄録 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | According to past studies based on long-term variations in precipitation and air temperature, climate in Chichi-jima of the Bonin (Ogasawara) Islands was rather wetter during the first half of the 20th century than during the latter half through present. The present study revealed actual hydroclimatic conditions using detailed meteorological components on monthly basis in the Annual Report of the Central Meteorological Observatory in terms of estimating potential evaporation and wetness index. As results of reevaluation of potential evaporation, Thornthwaite method underestimates potential evaporation especially during the cold season (from December to April) due to lower air temperature relatively to solar radiation. Thus, frequency of semi-dry month increased to 40-50% in this season. Annual wetness index is 1.24 in average (1907-1939) and only 5 years with less than 1.0 (semi-dry year). Small pan evaporation observed from 1931 to 1939 in Japan exhibits that Chichi-jima was one of the largest evaporation sites, namely the driest site in Japan although hydroclimatic conditions was wetter during the period. | |||||||||
| 書誌情報 |
Geographical Reports of Tokyo Metropolitan University 号 44, p. 85-93, 発行日 2009 |
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| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 03868710 | |||||||||
| 書誌レコードID | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AA00200173 | |||||||||
| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 出版者 | ||||||||||
| 出版者 | Department of Geography, Tokyo Metropolitan University | |||||||||
