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ID 16602
本文ファイル
別タイトル
Effects of irrigation on level and quality of unconfined groundwater in Takamatsu area
著者
渡邉 健一
橋本 美智子
キーワード
unconfined groundwater
water level
water quality
irrigation
field measurement
Takamatsu
NDC
建設工学・土木工学
抄録(英)
Extensive field measurement of groundwater level and quality was carried out three times in 2002 at sixty five stations in Takamatsu area to clarify the effects of irrigation on the unconfined groundwater. Continuous measurement of groundwater level has also been made at seven stations in addition to the continuous measurement by the public sectors. It is found that the water level gradually increases in the irrigation period with the contours of water level running nearly parallel to those of topography. The rainfall and the pumping up have influence of the change in water level. The pH of groundwater is found to slightly increase in the irrigation season while Stiff diagrams and the cluster analysis demonstrate that the water quality can be classified into four groups and that the groundwater quality mostly remains unchanged. Nitrate nitrogen of unconfined water at a few locations has exceeded the environmental standard, which may have come from the overuse of fertilizer. Some wells in the coastal region have shown the effects of seawater intrusion.
掲載誌名
水工学論文集
47巻
開始ページ
283
終了ページ
288
出版年月日
2003-02
出版者
土木学会
ISSN
0916-7374
NCID
言語
日本語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
部局名
工学研究科