EVALUATION OF FRACTAL MODELS IN DESCRIBING PARTICLE SIZE DISTRIBUTION OF SEDIMENT (CASE OF STUDY: FOOLADMAHALE OF SEMNAN)

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BABRNEJAD ZIARAT HANIYE; ZOLFAGHARI ALI ASGHAR; YAZDANI MOHAMMD REZA; HASHEMI ALI ASGHAR; KIYANIYAN MOHAMAD KIA

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Journal: JOURNAL OF WATERSHED MANAGEMENT RESEARCH Year:2017 | Volume:8 | Issue:15 Page(s): 61-72

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Title

EVALUATION OF FRACTAL MODELS IN DESCRIBING PARTICLE SIZE DISTRIBUTION OF SEDIMENT (CASE OF STUDY: FOOLADMAHALE OF SEMNAN)

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Keywords

CHECK DAMSQ1

FRACTAL DIMENSIONSQ1

SIGMOID FUNCTIONQ1

Abstract

The objective of current study was to invstigate the accuracy of Tyler and Wheat craft, Bird et al. and Kravchenko and Zhang fractal models in describing particle size distribution (PSD) of sediment in 14 successive CHECK DAMS for two depths of 0-15 and 15-30 cm. Sediment PSD were determined in 28 samples using hydrometer method. The referred fractal models were fitted on sediments PSD data. Results indicated that there was no regular relation among FRACTAL DIMENSIONS in successive CHECK DAMS. In addition, sediments transport from surrounding soils was more observable in CHECK DAMS. Two-parameter models of Bird et al. and Kravchenko and Zhang presented a better fit compared to one-parameter model of Tyler and Wheat craft. The results of statistical analysis proved that the SIGMOID FUNCTION was able to describe the relation between FRACTAL DIMENSIONS and clay, sand and silt percentage with a greater accuracy compared to the linear SIGMOID FUNCTION. Stepwise regressionanalysisdetermined astrong and significant correlation (R2=0.97**) between fractal dimension obtained from Tyler and Wheat craft modelwithclay and sand contents. According the result of this study, the determination of sediment PSD is possible by measurement of clayandsand amount.

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APA: Copy

BABRNEJAD ZIARAT, HANIYE, ZOLFAGHARI, ALI ASGHAR, YAZDANI, MOHAMMD REZA, HASHEMI, ALI ASGHAR, & KIYANIYAN, MOHAMAD KIA. (2017). EVALUATION OF FRACTAL MODELS IN DESCRIBING PARTICLE SIZE DISTRIBUTION OF SEDIMENT (CASE OF STUDY: FOOLADMAHALE OF SEMNAN). JOURNAL OF WATERSHED MANAGEMENT RESEARCH, 8(15), 61-72. SID. https://sid.ir/paper/230366/en

Vancouver: Copy

BABRNEJAD ZIARAT HANIYE, ZOLFAGHARI ALI ASGHAR, YAZDANI MOHAMMD REZA, HASHEMI ALI ASGHAR, KIYANIYAN MOHAMAD KIA. EVALUATION OF FRACTAL MODELS IN DESCRIBING PARTICLE SIZE DISTRIBUTION OF SEDIMENT (CASE OF STUDY: FOOLADMAHALE OF SEMNAN). JOURNAL OF WATERSHED MANAGEMENT RESEARCH[Internet]. 2017;8(15):61-72. Available from: https://sid.ir/paper/230366/en

IEEE: Copy

HANIYE BABRNEJAD ZIARAT, ALI ASGHAR ZOLFAGHARI, MOHAMMD REZA YAZDANI, ALI ASGHAR HASHEMI, and MOHAMAD KIA KIYANIYAN, “EVALUATION OF FRACTAL MODELS IN DESCRIBING PARTICLE SIZE DISTRIBUTION OF SEDIMENT (CASE OF STUDY: FOOLADMAHALE OF SEMNAN),” JOURNAL OF WATERSHED MANAGEMENT RESEARCH, vol. 8, no. 15, pp. 61–72, 2017, [Online]. Available: https://sid.ir/paper/230366/en

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