巻号一覧
23 巻 (1962)
- 3-4 号 p. 69-
- 2 号 p. 35-
- 1 号 p. 1-
23 巻, 2 号
選択された号の論文の4件中1～4を表示しています
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瀬野 錦蔵, 後藤 達夫1962 年 23 巻 2 号 p. 35-44
発行日: 1962/06/30
公開日: 2009/10/16
ジャーナル フリー以上述べたところは次のように要約出来る.
1. 河川の増水時には多くの場合に河水の化学成分は稀釈される.その稀釈は増水中に増加している地下水流出中の化学成分が増水によつて稀釈されるとみられるものがある.
2. 地下水流出量の化学成分が増水によつて稀釈されたとみるより濃い場合は雨水中の成分やドラィフォールアウトの溶解が考えられる.
3. 増水中の地下水流出は現降雨の浸透によつて先行降雨で作られた地下水を押出してくるものが主である.地下水流出に現降雨が混入してくる場合もあるが, これは現降雨による増水によつて地下水流出が妨げられるとも解釈出来る.
4. 過剰塩基やカルシウムも地下水中にあるが地下浅層にあつて, 中間流出によつて溶出されるものがある.
5. 増水によつて北上川に於ては硫酸イオン量が反つて増加している.これは上流に松尾硫黄鉱山があるためである.
6. 硫酸イオンが増水によつて減少するときは塩素量の減少率より大きい, 塩素イオンが深い地層よりの由来とすれば, 硫酸イオンの由来は浅層とみられる.抄録全体を表示PDF形式でダウンロード (1252K) -
加藤 武雄1962 年 23 巻 2 号 p. 45-54
発行日: 1962/06/30
公開日: 2009/10/16
ジャーナル フリーThe Gassan Volcano is dissected by several rivers, most of which were already investigated by the present author from the limnological point. The Tsunogawa River is one of the important rivers in the vicinity of that volcano. In this paper, the geochemical features of this river system are reported under the geological considerations ; moreover, the seasonal change of water quality of this main stream is described in detail. The results of the investigation are summarized as follows :
1. It must be noted that, among the tributaries of the Tsuno-gawa River, the Sawauchi-gawa and the Tochiyama-gawa, both of which start from the neighbourhood of the Uwanodai Hill composed of volcanic ash and mudstone, are characterized by high SiO2 concentration under the influence of the geological environment.
2. As for the Nagakura-gawa, the water quality is influenced to a certain extent by the copper pyrite deposit which is distributed in the valley of the upper reaches and Imagami spa' (a bicarbonate spring with chloride and sulfate contents) which gushes out in the drainage basin.
3. The water quality of the tributaries joining at the left side of the main stream resembles each other. So far as the SiO2 content, the amount of dissolved iron and the KMmO4 consumption are concerned, each of those observed in the tributaries at the left side is found rather small as compared with that of the tributaries at the right side
4. The variation of the water quality at several stations of the main stream is investigated. As a result, it is found that the hardness is negatively correlated with the SO42- content.
5. The variation of the water quality in the main stream is also observed throughout a year. A linear relationship is found to exist between the SO42-and Cl- content except at the flood stage. Moreover, in usual water stages, there exists the negative correlation between the evaporation residue and the SO42-content.抄録全体を表示PDF形式でダウンロード (966K) -
鈴木 静夫1962 年 23 巻 2 号 p. 55-60
発行日: 1962/06/30
公開日: 2009/10/16
ジャーナル フリー南九州湖沼の微生物相の観察を行ない, つぎのような結果を得た.
1. 水生菌類はSaprolegnia, Pythiumを主とし, 不動池だけは特異な水に適したSaprolegnia monoica var.acidamicaを産する.
2. 糸状菌の量は, 水, 泥ともに少なく, ともにPenicillium, Pullularia pullulansが主要な菌類となつている.
3. 湖泥の細菌数は泥のpHと相関を有する.また, 細菌の増殖率によつて, 各湖水の特性を明らかにした.抄録全体を表示PDF形式でダウンロード (531K) -
長沢 幹雄1962 年 23 巻 2 号 p. 61-67
発行日: 1962/06/30
公開日: 2009/10/16
ジャーナル フリーThe stagnant layer is formed when the shallow ground water is prevented from flowing by some reasons at some periods of the year.
The thermal stratification is formed when the wide surface of the shallow ground water has come into contact with the atmosphere, the temperature of which is higher than that of ground water in the day time. The amount of dissolved oxygen decreases with the decomposition of organic substances, while a remarkable increase is noticed of carbonate hydrogen ion, ammonium nitrogen and nitrite nitrogen in the bottom layer.
The vertical stratifications of cations are shown by nearly straight lines.
The ground water originally contains a large amount of nitrate nitrogen, though it slightly decreases in the upper layer. It increases, however, in the layer between the 1 m and 2. 5 m. Its sudden decrease is noticed in the bottom layer.
The stagnant layers are formed through the interaction of water temperature, pH, dissolved oxygen, carbonic acid substance and each form of nitrogen.抄録全体を表示PDF形式でダウンロード (682K)
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