INVESTIGATING SENSIVITY TO EROSION AND SEDIMENT YIELD OF FORMATIONS IN GORGAN DRAINAGE BASIN

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FEYZNIA S.; DASTOURANI J.; AHMADI HASAN; GHODOUSI JAMAL

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Journal: IRANIAN JOURNAL OF NATURAL RESOURCES Year:2008 | Volume:61 | Issue:1 Page(s): 13-27

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Title

INVESTIGATING SENSIVITY TO EROSION AND SEDIMENT YIELD OF FORMATIONS IN GORGAN DRAINAGE BASIN

Author(s)

FEYZNIA S. | DASTOURANI J. | AHMADI HASAN | GHODOUSI JAMAL | Issue Writer Certificate

Keywords

ANNUAL SEDIMENT YIELDQ3

WORK UNIT MAPQ3

SENSITIVITY TO EROSIONQ3

SPECIFIC EROSIONQ3

GORGAN DRAINAGE BASINQ3

Abstract

In this research, six sub-catchments of GORGAN DRAINAGE BASIN having discharge and sediment yield data were chosen. Yearly sediment rates of each sub-catchment were calculated. Then by dividing yearly sediment yield of sub-catchments to Sediment Delivery Ratio (SDR), the amount of erosion of each sub-catchment was determined. Homogeneous WORK UNIT MAP of each sub-catchment in GIS environment was prepared. Then, the erodibility of consolidated rocks and formations (Selby 1980) and unconsolidated geologic materials (modified K parameter in USLE) was determined. For ranking the erodibility of consolidated and unconsolidated geologic materials in the specific range (Selby number), the method of distance between numbers was used. For comparing different work units from the view point of erodibility and sediment yield, based on qualitative erodibility grade and SPECIFIC EROSION amount of land uses, SPECIFIC EROSION of each homogeneous work unit was calculated by using presented relationships. The results showed that the erodibility grade of rocks is from 34 to 86 and of unconsolidated geological materials is from 13 to 22.3, Also SPECIFIC EROSION of different work units in sub-catchments is from less than one up to 500 t/km2/y.

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APA: Copy

FEYZNIA, S., DASTOURANI, J., AHMADI, HASAN, & GHODOUSI, JAMAL. (2008). INVESTIGATING SENSIVITY TO EROSION AND SEDIMENT YIELD OF FORMATIONS IN GORGAN DRAINAGE BASIN. IRANIAN JOURNAL OF NATURAL RESOURCES, 61(1), 13-27. SID. https://sid.ir/paper/23074/en

Vancouver: Copy

FEYZNIA S., DASTOURANI J., AHMADI HASAN, GHODOUSI JAMAL. INVESTIGATING SENSIVITY TO EROSION AND SEDIMENT YIELD OF FORMATIONS IN GORGAN DRAINAGE BASIN. IRANIAN JOURNAL OF NATURAL RESOURCES[Internet]. 2008;61(1):13-27. Available from: https://sid.ir/paper/23074/en

IEEE: Copy

S. FEYZNIA, J. DASTOURANI, HASAN AHMADI, and JAMAL GHODOUSI, “INVESTIGATING SENSIVITY TO EROSION AND SEDIMENT YIELD OF FORMATIONS IN GORGAN DRAINAGE BASIN,” IRANIAN JOURNAL OF NATURAL RESOURCES, vol. 61, no. 1, pp. 13–27, 2008, [Online]. Available: https://sid.ir/paper/23074/en

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