巻号一覧
44 巻 (2002)
- 4 号 p. 285-
- 3 号 p. 185-
- 2 号 p. 81-
- 1 号 p. 3-
44 巻, 1 号
選択された号の論文の5件中1～5を表示しています
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町田 功, 唐 常源, 新藤 静夫, 近藤 昭彦, 佐倉 保夫2002 年 44 巻 1 号 p. 3-19
発行日: 2002/03/08
公開日: 2012/12/11
ジャーナル フリーUnited Arab Emirates (UAE), where is mostly covered by sand desert, is located in southeastern part of the Arabian Peninsula. From the field survey in 1996 and 1997throughout UAE, it was found that the geomorphology had close relation to the groundwater quality. Groundwater with high Cl- concentration distributed widely in sabkha, dune, as well as downstream of wadi area.
The results of isotopic calculations and the distribution of groundwater/surface water quality indicated that the evaporation of rainwater (or flood water) was not main cause of increasing Cl- concentration in groundwater. In other hand, these water were not saturated with a halite. From the results, in eastern UAE, it is concluded that the Cl- in groundwater was derived from a stratum with halite, but which have already dissolved by newly recharged water. The groundwater in Liwa (western UAE) showed higher oxygen isotope concentration than that in eastern UAE. So, the groundwater in Liwa does not have same source to that of eastern UAE.抄録全体を表示PDF形式でダウンロード (2220K) -
竹下 祐二, 八木 一雄, 森井 俊広, 井上 光弘2002 年 44 巻 1 号 p. 21-33
発行日: 2002/03/08
公開日: 2012/12/11
ジャーナル フリーA new field experimental method of d etermining unsaturated soil hydraulic properties is proposed. In this method these properties are assumed to be represented by van Genuchten' s closed-form expressions. Unknown parameters of this model are identified by Genetic algorithms (GA) incorporating finite element analysis of transient axisymmetric seepage flow. GA are search algorithms based on the mechanics of natural selection and natural genetics. They have become a popular global optimization method. A-ponded singlering infiltrometer technique, such as the Guelph Pressure Infiltrometer is performed. Simultaneously the measured change of soil water content with time and cumulative inflow data are used to identify unsaturated soil hydraulic function parameters. The advantage of the proposed method is that it allows estimation of the unsaturated soil hydraulic parameters by quite simple in-situ permeability test data. The utility of our proposed method is demonstrated by using a numerical model and experimental data for Tottori dune sand.抄録全体を表示PDF形式でダウンロード (7649K) -
濱田 浩正, 二平 聡2002 年 44 巻 1 号 p. 35-43
発行日: 2002/03/08
公開日: 2012/12/11
ジャーナル フリーPDF形式でダウンロード (3777K) -
登坂 博行2002 年 44 巻 1 号 p. 45-52
発行日: 2002/03/08
公開日: 2012/12/11
ジャーナル フリーPDF形式でダウンロード (11420K) -
佐藤 芳徳2002 年 44 巻 1 号 p. 53-62
発行日: 2002/03/08
公開日: 2012/12/11
ジャーナル フリーPDF形式でダウンロード (24974K)
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