書誌事項
- タイトル別名
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- Groundwater Pollution Caused by the Seawater Intrusion and the Fertilizer Dissolution in Gogo Island
- ゴゴシマ ニ オケル チカスイ ノ エンスイ オセン ト ヒリョウ オセン
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This paper deals with the problem of the groundwater pollution caused by both the seawater intrusion into phreatic and confined aquifers and the fertilizer dissolution into a phreatic aquifer in Gogo Island, Ehime Prefecture.<BR>Groundwater levels, chloride ion concentrations and electrical conductivities in shallow wells were measured at five districts in this island during a period from August 1983 to December 1984. At Yura district, groundwater levels and chloride ion concentrations in deep wells as well as tide levels were measured.<BR>The main results are as follows: 1) Chloride ion concentration profiles show the rapid increase of the concentration in the neighborhood of the deep well bottom.2) Using a modified Kishi & Inouchi's model, the variation of the groundwater level and fresh water-salt water interface in response to the tide was analysed, which is applicable to the confined aquifer with an exponentially oaring thickness. It was found that the thickness of the confined aquifer estimated from this analysis is in fairly good agreement with the one obtained by boring examination.3) Very high chloride ion concentrations far greater than 200 mg⋅ 1-1, the standard value of city water, were found in coastal regions at Yura district.4) The concentration of total ions estimated by the electrical conductivity of groundwater minus the chloride ion- concentration increases at one to two months after fertilization.
収録刊行物
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- THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY
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THE JOURNAL OF THE JAPANESE ASSOCIATION OF GROUNDWATER HYDROLOGY 27 (4), 115-127, 1985
公益社団法人 日本地下水学会
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詳細情報 詳細情報について
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- CRID
- 1390001205081288320
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- NII論文ID
- 10006064250
- 130003359750
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- NII書誌ID
- AN00195122
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- ISSN
- 21865515
- 00290602
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- NDL書誌ID
- 3077398
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可