نوع مقاله : مقاله پژوهشی
نویسندگان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The discharge and suspended sediment concentration are measured only in a few days of the year in most Iranian rivers. Therefore, application of methods which can estimate and forecast the sediment load with the short term or interrupted data is inevitable. The present research was conducted to compare the performance of some data grouping methods for sediment rating curve preparation and another 6 hydrological methods for estimation suspended sediment load in two hydrometric stations located in two different climatic zones of Iran (Ghorbaghestan station located on Gharasoo River and Kordkheil station located on Tajan River). Results showed that in Ghorbaghestan station, the estimated suspended sediment resulted from the sediment rating curve, Smearing and LQMLE methods (in total mode, wet and dry year) were underestimated, while, in the FC1, FC2, FAO, and LQMLE methods (in hydro-climatic and main seasons and composite modes), were overestimated.In Kordkheil station, except FAO method, the estimated suspended sediment resulted from all studied methods were underestimated.
کلیدواژهها [English]