EVALUATION OF DOWNSTREAM TRENDS IN SEDIMENT MORPHOMETRIC CHARACTERISTICS AFFECTED BY HYDROLOGIC AND LITHOLOGIC CONTROLS IN VARTAVAN CATCHMENT

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MOSAFFAIE J.; EKHTESASI M.R.; DASTORANI M.T.

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Journal: IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING Year:2015 | Volume:9 | Issue:30 Page(s): 23-30

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Title

EVALUATION OF DOWNSTREAM TRENDS IN SEDIMENT MORPHOMETRIC CHARACTERISTICS AFFECTED BY HYDROLOGIC AND LITHOLOGIC CONTROLS IN VARTAVAN CATCHMENT

Author(s)

MOSAFFAIE J. | EKHTESASI M.R. | DASTORANI M.T. | Issue Writer Certificate

Keywords

HYDRAULIC SORTINGQ2

DOWNSTREAM FININGQ2

SEMI- ARID CLIMATEQ2

HETEROGENEOUS LITHOLOGYQ2

Abstract

Downstream trends in sediment size variation provide valuable information for related catchment sciences. Downstream sediment fining is one of basic beliefs in the river systems and numerous studies have also been conducted in this regard during recent decades. The main goal of this study was to determine and analyze downstream trend of sediment size in the streams of Vartavan catchment (4811 ha) in Qazvin province. For this purpose, 25 sediment samples from streams with rank 1 to 6 and 30 soil samples of various lithology units were collected. Various morphometric indices were determined after grain size analyses. The results showed according to HYDRAULIC SORTING rules and based on decreasing slope and increasing main channel length and drainage area, the particle size of channel-bed material must be fine downstream. But particle size of channel-bed material increases downstream, and downstream trend was affected by floods of semi-arid climate and HETEROGENEOUS LITHOLOGY of catchment. Therefore downstream trends of sediment particle size is predominantly controlled by catchment climate and lithology, and hydraulic variations impose secondary role to the overall trend. Results of this study are expected to improve our understanding of downstream trends in the composition of alluvial deposits of semi-arid and geologically heterogeneous catchments.

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APA: Copy

MOSAFFAIE, J., EKHTESASI, M.R., & DASTORANI, M.T.. (2015). EVALUATION OF DOWNSTREAM TRENDS IN SEDIMENT MORPHOMETRIC CHARACTERISTICS AFFECTED BY HYDROLOGIC AND LITHOLOGIC CONTROLS IN VARTAVAN CATCHMENT. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, 9(30), 23-30. SID. https://sid.ir/paper/134663/en

Vancouver: Copy

MOSAFFAIE J., EKHTESASI M.R., DASTORANI M.T.. EVALUATION OF DOWNSTREAM TRENDS IN SEDIMENT MORPHOMETRIC CHARACTERISTICS AFFECTED BY HYDROLOGIC AND LITHOLOGIC CONTROLS IN VARTAVAN CATCHMENT. IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING[Internet]. 2015;9(30):23-30. Available from: https://sid.ir/paper/134663/en

IEEE: Copy

J. MOSAFFAIE, M.R. EKHTESASI, and M.T. DASTORANI, “EVALUATION OF DOWNSTREAM TRENDS IN SEDIMENT MORPHOMETRIC CHARACTERISTICS AFFECTED BY HYDROLOGIC AND LITHOLOGIC CONTROLS IN VARTAVAN CATCHMENT,” IRANIAN JOURNAL OF WATERSHED MANAGEMENT SCIENCE AND ENGINEERING, vol. 9, no. 30, pp. 23–30, 2015, [Online]. Available: https://sid.ir/paper/134663/en

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