Runoff analysis of the Chang Jiang (the Yangtze River)
1991
SUGAWARA, M. | OZAKI, E.
The daily discharge of the Chang Jiang (the Yangtze River) at Yichang (catchment area about one million square kilometres) is derived by routing the daily discharge of the Jinsha Jiang at Pingshan (catchment area about half a million square kilometres) with modelled runoff based on daily precipitation at 14 rainfall stations in the downstream Sichuan basin. Precipitation at each station is transformed into runoff by means of a tank model composed with a time lag. The time lag is assumed to obey a normal distribution, the mean and the standard deviation of which are determined by the discharge on the same day at Three Gorges.
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