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- 登坂 博行
- 東京大学大学院工学系研究科地球システム工学専攻
書誌事項
- タイトル別名
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- Formation and Movement of Freshwater-saltwater Transition Zone through Geologic Time. (No.1). Numerical Case Studies under Static Boundary Conditions.
- チシツ ジカン ニ ワタル タンエンゼンイタイ ノ ケイセイ カテイ ト ケイタイ ヘンカ ニ カンスル スウチ カイセキテキ ケントウ 1 セイテキ キョウカイ ジョウケン カ ニ オケル ケントウ
- Numerical Case Studies under Static Boundary Conditions
- 静的境界条件下における検討
この論文をさがす
説明
For giving basic understandings of the long-term safety of geologic isolation of high level radioactive wastes in a coastal deep subsurface region, behavior of the Freshwater-Saltwater Transition Zone (FSTZ), which might be a key factor in estimating and predicting the coastal groundwater flow field, is examined through numerical case studies. The author presents, in the sequential two papers, the results of 2-D cross-sectional model studies under static/dynamic boundary conditions.<BR>In this paper, the numerical results under static boundary conditions are presented. They can be summarized as follows.<BR>(a) Under the same boundary conditions, two different processes, i. e., a washing-out process starting from saltwater saturated condition and a saltwater intrusion process starting from saltwater/freshwater separated condition, produce almost the same shape of FSTZ at steady state.<BR>(b) The lower the regional permeability becomes, the longer the time required for attaining equilibrium of FSTZ becomes.<BR>(c) Push-out of FSTZ to sea side by freshwater may occur when the rate of infiltration is high, and/or rock anisotropy is high, and/or the topographic high exists.<BR>(d) Existence of a fault with relatively lower permeability than the peripheral rock may have greater effect on the position and shape of FSTZ, than that with higher permeability.
収録刊行物
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- 応用地質
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応用地質 43 (5), 293-305, 2002
一般社団法人 日本応用地質学会
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詳細情報 詳細情報について
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- CRID
- 1390001204095780480
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- NII論文ID
- 110003320071
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- NII書誌ID
- AN00026635
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- ISSN
- 18840973
- 02867737
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- NDL書誌ID
- 6404764
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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