The mixing of river water in River Yodo.
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概要
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Using dissolved conservative constituents in river waters, the mixing of flowing waters was studied between 13 km downstream and the junction where the River Kizu from left side, the River Uji from the middle, and the River Katsura from the right side, converge to form the River Yodo.<BR>The concentrations of ammonium, phosphate, sodium and potassium in river waters on the right side of the River Yodo were always higher than those found on the left side to about 13 km downstream. The amounts of silica, sodium and potassium calculated from their concentrations and flow volume in the River Yodo were in good agreement with the sum of their amounts from the three tributaries. Using each flow volume estimated from the concentrations of silica and sodium (or potassium) in tributaries, the contribution ratio of ammonium and phosphate loading to the River Yodo was calculated and found to be in good agreement with the measured loadings.<BR>The present results suggested that the removal of ammonium and phosphate during flow downstream might not occur, and silica can be used as a conservative tracer of flowing water mixing as well as sodium and potassium.
- 日本陸水学会の論文
日本陸水学会 | 論文
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