THE VALIDITY OF EXTRAPOLATION METHODS IN ESTIMATION OF ANNUAL MEAN SUSPENDED SEDIMENT YIELD (17 HYDROMETRIC STATIONS)

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ARAB KHEDRI M.; VARVANI J.; HAKIM KHANI SH.

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Journal: Journal of Agricultural Sciences and Natural Resources Year:2004 | Volume:11 | Issue:3 Page(s): 123-131

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Title

THE VALIDITY OF EXTRAPOLATION METHODS IN ESTIMATION OF ANNUAL MEAN SUSPENDED SEDIMENT YIELD (17 HYDROMETRIC STATIONS)

Author(s)

ARAB KHEDRI M. | VARVANI J. | HAKIM KHANI SH. | Issue Writer Certificate

Keywords

EXTRAPOLATIONQ3

SEDIMENT YIELD ESTIMATIONQ4

SEDIMENT RATING CURVEQ2

ANNUAL SUSPENDED SEDIMENT YIELDQ4

Abstract

Sediment yield isn't usually estimated by interpolation methods; because of lacking of enough rivers concentration data. So the most common method to estimate mean suspended sediment load (SSL) is using SEDIMENT RATING CURVE (SRC) in combination with discharge data classified as EXTRAPOLATION methods. There are different methods for determination of SRCs equation and processing flow data. In this research we estimate the SSL in 17 hydrometric stations with 18 EXTRAPOLATION methods to evaluate the accuracy and precision of them. These methods classified to 6 groups of SRC estimation and 3 types of flow data. In addition we computed the actual SSL on the basis of intensive sediment concentration data in Ghazaghly station using interpolation method. Comparison of results showed that the "Mean loads within discharge classes- Daily discharge" method has good agreement with actual load and therefore selected as the standard method. Finally differences among 17 methods are comprised and evaluated with standard one in other 16 stations. The results showed that FAO, Nonparametric, Parametric, and Fitting one line methods haven't good agreement with standard method. Also Flow duration method underestimated SSL about 14%.

Cites

REGIONAL ASSESSMENT OF SEDIMENT RATING CURVES IN THE DIFFERENT CLIMATES OF IRAN

References

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APA: Copy

ARAB KHEDRI, M., VARVANI, J., & HAKIM KHANI, SH.. (2004). THE VALIDITY OF EXTRAPOLATION METHODS IN ESTIMATION OF ANNUAL MEAN SUSPENDED SEDIMENT YIELD (17 HYDROMETRIC STATIONS). JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, 11(3), 123-131. SID. https://sid.ir/paper/8930/en

Vancouver: Copy

ARAB KHEDRI M., VARVANI J., HAKIM KHANI SH.. THE VALIDITY OF EXTRAPOLATION METHODS IN ESTIMATION OF ANNUAL MEAN SUSPENDED SEDIMENT YIELD (17 HYDROMETRIC STATIONS). JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES[Internet]. 2004;11(3):123-131. Available from: https://sid.ir/paper/8930/en

IEEE: Copy

M. ARAB KHEDRI, J. VARVANI, and SH. HAKIM KHANI, “THE VALIDITY OF EXTRAPOLATION METHODS IN ESTIMATION OF ANNUAL MEAN SUSPENDED SEDIMENT YIELD (17 HYDROMETRIC STATIONS),” JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES, vol. 11, no. 3, pp. 123–131, 2004, [Online]. Available: https://sid.ir/paper/8930/en

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