TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND ITS RESPONSES TO TIDE IN URBAN TIDAL RIVER NETWORK
TEMPORAL AND SPATIAL CHARACTERISTICS OF WATER QUALITY AND ITS RESPONSES TO TIDE IN URBAN TIDAL RIVER NETWORK
复制标题
城市潮汐河网水质时空特征及其对潮汐的响应
DOI：
10.2208/prohe.52.1099
复制
发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Y. Shoji
中科院分区：
文献类型：
--
作者：
Masayasu Irie;S. Nishida;Y. Shoji
The discharges of urban rivers in Japan are poor because of heavy water use and the water quality of them is better than those in 1970s but not desirable even today. They are also tidal, and the concentration of dissolved oxygen (DO) in the intruding saline water is very low. Therefore, the characteristics and dynamics of the water quality in them are very complicated. In the presenting paper field observation is carried out in order to clear the temporal and spatial characteristics of nitrogen, phosphorus and DO and the influence of tide and saline water in the rivers and canals which flows through the city center of Osaka. Two kinds of upstream waters flow into the area, and the water containing higher concentration of nutrients remains longer in the rivers. The water masses in which the concentration of DO is lowest are found in the saline water near the river mouths.
