岡山における日降雨特性の経年変化

• 近森 秀高

  岡山大学環境理工学部

• 永井 明博

  岡山大学環境理工学部

書誌事項

タイトル別名

• Long-term Change in Daily Rainfall Characteristics at Okayama.

抄録

Rainfall characteristics is said to be changed in recent decades due to global climate change. In order to find the changes, a statistical analysis was performed for 100-year (1898-1997) daily rainfall record at Okayama Meteorological Observatory. For this purpose, a storm is defined as a succession of rainy days, and we examined frequency and distirbution of total rainfall and duration of a storm, storm inter-arrival time and interval between storms. The result of frequency analysis shows that frequency of 100-year storm rainfall during 1899-1931 becomes almost thirteen times larger during 1965-1997. Besides frequency of 100-year interval between storms during 1899-1931 becomes five times larger during 1965-1997. The change in frequency of these hydrological characteristics shows us necessity to reconsider magnitude of design floods and/or droughts for constructing hydraulic structures.

収録刊行物

• 水文・水資源学会誌

  水文・水資源学会誌 15 (5), 513-521, 2002

  水文・水資源学会

キーワード

• 日降雨特性,ひと雨雨量,年最大日雨量,連続無降雨期間, Gumbel分布

詳細情報

• CRID: 1390282679417222272
• NII論文ID: 130003664081
• DOI: 10.3178/jjshwr.15.513
• ISSN: 13492853
• ISSN: 09151389
• ISSN: http://id.crossref.org/issn/09151389
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可