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  1. 紀要論文
  2. 琉球大学理工学部紀要 理学編
  3. 26号
  1. 部局別インデックス
  2. 理学部

沖縄本島北部河川水の化学的研究及び流出量

http://hdl.handle.net/20.500.12000/24079
http://hdl.handle.net/20.500.12000/24079
3e464027-e532-4119-ab4d-e4346a1b40bd
名前 / ファイル ライセンス アクション
No26p031_2.pdf No26p031_2.pdf
No26p031_1.pdf No26p031_1.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2012-04-13
タイトル
タイトル 沖縄本島北部河川水の化学的研究及び流出量
言語 ja
作成者 渡久山, 章

× 渡久山, 章

ja 渡久山, 章

下地, 寛

× 下地, 寛

ja 下地, 寛

Tokuyama, Akira

× Tokuyama, Akira

en Tokuyama, Akira

Shimozi, Hiroshi

× Shimozi, Hiroshi

en Shimozi, Hiroshi

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
内容記述
内容記述タイプ Other
内容記述 What are the natural states in OKINAWA HONTŌ? A part of the authors' purposes is to get knowledge about them, which may be achieved by knowing the chemical composition of river water and considering the origin of dissolved chemical species. The region where the natural states are preserved best in the OKINAWA HONTŌ is the northern side. We collected sixty four water samples from the rivers scattered around the north region of NAGO. Samples were collected from 3rd to 6th of May in 1977. The following results were obtained. (1) The total concentration of dissolved chemical species on an average is 120 to 130 ppm at normal flux. (2) Sixty per cent of these may be supplied from the land. (3) The per cent of alkalinity, SiO_2, Ca^<2+>, Mg^<2+>, K^+, So^<2->_4 and Na^+ which might be supplied from the land are calculated to be 100, 100, 94, 50, 50, 50 and 20 respectively. (4) The maximum quantity dissolved from the OKINAWA HONTŌ were estimated to be less than 3.6 hundred thousound tons per year. (5) The chloride ions concentration was reduced with increasing the distance from the sea. (6) When rock and soil contact with water, the behavior of dissolved chemical species was complex. For example, the relationship between excess Ca^<2+> +Mg^<2+> and alkalinity was linear but SiO_2 had no any relationship with other species. (7) The river waters which originate in NISHIME DAKE, TERUKUBI YAMA, YONAHA DAKE and IYU DAKE are the softest and the effect of sea water on them is the least in OKINAWA HONTŌ. The flux of these rivers is large compared to the other rivers of OKINAWA HONTŌ.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学理工学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ NA
出版タイプResource http://purl.org/coar/version/c_be7fb7dd8ff6fe43
識別子
識別子 http://hdl.handle.net/20.500.12000/24079
識別子タイプ HDL
収録物識別子
収録物識別子タイプ NCID
収録物識別子 AN0025080X
収録物名
言語 ja
収録物名 琉球大学理工学部紀要. 理学編
書誌情報
号 26, p. 31-52
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