REGIONAL ANALYSIS OF SUSPENDED SEDIMENT ESTIMATION IN ESFAHAN AND SIRJAN WATERSHEDS

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SADEGHI S.H.R.; NAJAFI D.A.; VAFAKHAH M.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2007 | Volume:2 | Issue:3 Page(s): 51-65

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Title

REGIONAL ANALYSIS OF SUSPENDED SEDIMENT ESTIMATION IN ESFAHAN AND SIRJAN WATERSHEDS

Author(s)

SADEGHI S.H.R. | NAJAFI D.A. | VAFAKHAH M. | Issue Writer Certificate

Keywords

REGIONAL ANALYSISQ4

ESFAHAN AND SIRJAN WATERSHEDQ4

SEDIMENT MODELINGQ4

GAVKHUNI SWAMPQ4

IRANQ4

Abstract

Limited number of sediment stations and recorded data, together with the inaccurate and insufficient sediment samples in flood events has doubted the river sediment load analysis especially in dry and semi-dry areas. Accordingly the REGIONAL ANALYSIS seems to be a useful tool aiming appropriate models for estimating sediment loads. In this study the model results are compared for sediment load estimatin in ESFAHAN AND SIRJAN WATERSHEDs, located in central IRAN and comprise 99300 Km2 in area. For 14 sub-watersheds having 11 years of compatible data records the mean daily suspended sediments and 49 physiographic, hydrologic, land use, geologic and climatic characteristics were used respectively as criterion and predictor variables. The multivariable regression techniques were applied with the help of factor analysis, clustering, and discriminant analysis to access the most suitable regression models. The results revealed that two regression models developed for two homogeneous regions could acceptably model the variations. The respective maximum and mean relative error of these models were 35.19 and less than 10%, respectively, obtained from factor analysis technique and selecting one representative variable in every component. The most suitable variables for estimation of mean daily suspended sediment yield of sub-watersheds are the peak discharge with 20 years return period, rangeland percentile, and ruggedness number.

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APA: Copy

SADEGHI, S.H.R., NAJAFI, D.A., & VAFAKHAH, M.. (2007). REGIONAL ANALYSIS OF SUSPENDED SEDIMENT ESTIMATION IN ESFAHAN AND SIRJAN WATERSHEDS. IRAN-WATER RESOURCES RESEARCH, 2(3), 51-65. SID. https://sid.ir/paper/99878/en

Vancouver: Copy

SADEGHI S.H.R., NAJAFI D.A., VAFAKHAH M.. REGIONAL ANALYSIS OF SUSPENDED SEDIMENT ESTIMATION IN ESFAHAN AND SIRJAN WATERSHEDS. IRAN-WATER RESOURCES RESEARCH[Internet]. 2007;2(3):51-65. Available from: https://sid.ir/paper/99878/en

IEEE: Copy

S.H.R. SADEGHI, D.A. NAJAFI, and M. VAFAKHAH, “REGIONAL ANALYSIS OF SUSPENDED SEDIMENT ESTIMATION IN ESFAHAN AND SIRJAN WATERSHEDS,” IRAN-WATER RESOURCES RESEARCH, vol. 2, no. 3, pp. 51–65, 2007, [Online]. Available: https://sid.ir/paper/99878/en

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