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Evaluation of Sediment Yield Predicting Models of Ghana

Journal of Geographical Research 2021年第1期4卷 37-47页

作者： John Manyimadin Kusimi Bertha Ansaah Kusimi Barnabas A.Amisigo Dept.of Geography&Resource Development University of GhanaLegonAccraGhana Institute of Environment and Sanitation Studies University of GhanaLegonAccraGhana Water Research Institute Council for Scientific&Industrial ResearchP.O.Box AH.38AccraGhana

Fluvial sediment transport data is a very important data for effective water resource ***,acquiring this data is expensive and tedious hence sediment yield modeling has become an alternative approach in estimating river sediment *** Ghana,several sediment yield predicting models have been developed to estimate the sediment yields of ungauged rivers including the pra river *** this paper,10 months sediment yield data of the pra river Basin was used to evaluate the existing sediment yield predicting models of Ghana.A regression analysis between predicted sediment yield data derived from the models and the observed suspended sediment yields of the pra Basin was done to determine the extent of estimation of observed sediment *** prediction of suspended sediment yield was done for 4 out of 5 existing sediment yield predicting models in *** were variations in sediment yield between observed and predicted suspended *** predicted sediment yields were lower than observed data except for equation 3 where the results were *** models were found to be good estimators of fluvial sediments with the best model being equation *** yield tends to increase with drainage basin area.

关键词： pra river Regression analysis Sediment transport Sediment yield Sediment yield modeling Ghana

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