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Groundwater flow system under a rapidly urbanizing coastal city as determined by hydrogeochemistry
http://hdl.handle.net/2298/21383
http://hdl.handle.net/2298/213831cd19003-d6f5-40aa-9548-b1b3a8e82670
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
JAES40_1_226-239.pdf (1.3 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 公開日 | 2011-09-16 | |||||
| タイトル | ||||||
| タイトル | Groundwater flow system under a rapidly urbanizing coastal city as determined by hydrogeochemistry | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| キーワード | ||||||
| 主題 | groundwater flow system, hydrogeochemistry, excessive groundwater pumping, groundwater age tracer, Jakarta, Indonesia | |||||
| 資源タイプ | ||||||
| 資源タイプ | journal article | |||||
| 著者 |
Kagabu, Makoto
× Kagabu, Makoto× Shimada, Jun× Delinom, Robert M.× Tsujimura, Maki× Taniguchi, Makoto |
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| 別言語の著者 |
利部, 慎
× 利部, 慎× 嶋田, 純× 辻村, 真貴× 谷口, 真人 |
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| 内容記述 | ||||||
| 内容記述 | In the Jakarta area (Indonesia), excessive groundwater pumping due to the rapidly increasing population has caused groundwater-related problems such as brackish water contamination in coastal areas and land subsidence. In this study, we adopted multiple hydrogeochemical techniques to demonstrate the groundwater flow system in the Jakarta area. Although almost all groundwater existing in the Jakarta basin is recharged at similar elevations, the water quality and residence time demonstrates a clear difference between the shallow and deep aquifers. Due to the rapid decrease in the groundwater potential in urban areas, we found that the seawater intrusion and the shallow and deep groundwaters are mixing, a conclusion confirmed by major ions, Br−:Cl− ratios, and chlorofluorocarbon (CFC)-12 analysis. Spring water and groundwater samples collected from the southern mountainside area show younger age characteristics with high concentrations of 14C and Ca-HCO3 type water chemistry. We estimated the residence times of these groundwaters within 45 years under piston flow conditions by tritium analysis. Also, these groundwater ages can be limited to 20 to 30 years with piston flow evaluated by CFCs. Moreover, due to the magnitude of the CFC-12 concentration, we can use a pseudo age-indicator in this field study, because we found a positive correlation between the major type of water chemistry and the CFC-12 concentration. | |||||
| 書誌情報 |
Journal of Asian Earth Sciences 巻 40, 号 1, p. 226-239, 発行年 2011-01-04 |
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| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 関連識別子 | 10.1016/j.jseaes.2010.07.012 | |||||
| 権利 | ||||||
| 権利情報 | © 2010 Elsevier Ltd. | |||||
| 情報源(ISSN) | ||||||
| 関連名称 | 13679120 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 形態 | ||||||
| 1348677 bytes | ||||||
| 著者版フラグ | ||||||
| 出版タイプ | AM | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 450 | |||||
| 出版者 | ||||||
| 出版者 | Elsevier | |||||
| 資源タイプ | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 論文(Article) | |||||
| 資源タイプ・ローカル | ||||||
| 雑誌掲載論文 | ||||||
| 資源タイプ・NII | ||||||
| Journal Article | ||||||
| 資源タイプ・DCMI | ||||||
| text | ||||||
| 資源タイプ・ローカル表示コード | ||||||
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| URL | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | http://www.sciencedirect.com/science/article/pii/S1367912010002312 | |||||
