信江流域洪涝指数及其预报

Flood Index and Its Forecast in Xinjiang River Basin

采用逐日资料，把定性的降雨集中期在时间上和雨量上进行了量化，形成普遍适用的算式，并提出了雨量集中期的集中度的算式，进而建立了把雨量集中期、集中度与洪涝程度密切联系在一起的单站洪涝指数。在此基础上确定了流域雨量集中期、集中度及信江流域洪涝指数。最后，对信江流域洪涝指数作了预报试验。

The qualitative concentration period of precipitation was quantitated in time and rainfall by using daily data. General equations of concentration period and concentration degree were formed. A single station flood index was given relating to precipitation concentration period,concentration degree and flood level. On this basis, precipitation concentration period, concentration degree and the flood index in Xinjiang River basin were determined. Finally, the forecast experiments were made with the flood index in the basin.