降水による地下水水質の変動 Compositional change of groundwater caused by precipitation

この論文にアクセスする

この論文をさがす

著者

抄録

Groundwater samples were collected from three drilled wells situated in a forest area, after ordinary and heavy precipitation events. Two patterns of concentration change of dissolved species were observed after ordinary precipitation event. One, examplified by the behavior of Ca<sup>2+</sup> and alkalinity, represents a simple dilution of ground-water by penetrating rainwater. The other, characteristic of NO<sub>3</sub><sup>-</sup> and silica, indicates a temporary increase in concentrations of these species. The nitrate was derived from dissolution of dry fallout, and the silica from dissolution of amorphous aluminosilicates formed by weathering of silicate rocks. After a heavy precipitation, the pattern of concentration change can be explained by a strong dilution of groundwater by rainwater. Only silica concentration remained virtually unchanged, thus supporting leaching of silica from aluminosilicates by descending rainwater.

収録刊行物

  • 地球化学

    地球化学 18(1), 15-19, 1984

    一般社団法人日本地球化学会

各種コード

  • NII論文ID(NAID)
    110008679754
  • NII書誌ID(NCID)
    AN00141280
  • 本文言語コード
    JPN
  • ISSN
    0386-4073
  • NDL 記事登録ID
    3003575
  • NDL 刊行物分類
    ME34;M092
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-645
  • データ提供元
    NDL  NII-ELS  J-STAGE 
ページトップへ