Investigation of Spatial Variability of Precipitation Concentration and Rainfall Erosivity Indices in Khuzestan Province

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ESLAMI HOSSEIN

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Paper Information

Journal: JOURNAL OF WATERSHED MANAGEMENT RESEARCH Year:2018 | Volume:9 | Issue:17 Page(s): 109-118

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Information Journal Paper

Title

Investigation of Spatial Variability of Precipitation Concentration and Rainfall Erosivity Indices in Khuzestan Province

Author(s)

ESLAMI HOSSEIN | Issue Writer Certificate

Keywords

GeostatisticsQ1

InterpolationQ1

Precipitation ConcentrationQ1

Modified FournierQ2

Abstract

Rainfall variability and its impact on water resources are important climatic issues. Intra-annual variations in rainfall are characterized as Precipitation Concentration index (PCI). Another feature that directly correlates with the concentration of precipitation is the rain erosivity (Modified Fournier Index MFI). The aim of this study is to investigate the PCI and MFI indices and map their spatial variations. The Modified Fournier and Precipitation Concentration indices were calculated using rainfall data from 55 meteorological stations located in Khuzestan province. To produce the spatial variations map, point information is converted to regional using geostatistical and deterministic methods. The results indicated that the ordinary and simple Kriging with Gaussian type have highest accuracy for Interpolation of the PCI and MFI indices, respectively. According to the spatial variation map of the PCI, the highest values of that index are seen in the southern region and the lowest values are in the north and northeast of the Khuzestan province. The PCI values ranged between 20 and 31 indicating severe seasonality. The MFI values vary from 49 to 224 in which the highest values are for the northeast region of the province and the lowest ones are for the south and southwest zones. Generally Rainfall limited in a certain months. alues are for the northeast region of the province and the lowest ones are for the south and southwest zones. Generally Rainfall limited in a certain months.

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APA: Copy

ESLAMI, HOSSEIN. (2018). Investigation of Spatial Variability of Precipitation Concentration and Rainfall Erosivity Indices in Khuzestan Province. JOURNAL OF WATERSHED MANAGEMENT RESEARCH, 9(17 ), 109-118. SID. https://sid.ir/paper/371453/en

Vancouver: Copy

ESLAMI HOSSEIN. Investigation of Spatial Variability of Precipitation Concentration and Rainfall Erosivity Indices in Khuzestan Province. JOURNAL OF WATERSHED MANAGEMENT RESEARCH[Internet]. 2018;9(17 ):109-118. Available from: https://sid.ir/paper/371453/en

IEEE: Copy

HOSSEIN ESLAMI, “Investigation of Spatial Variability of Precipitation Concentration and Rainfall Erosivity Indices in Khuzestan Province,” JOURNAL OF WATERSHED MANAGEMENT RESEARCH, vol. 9, no. 17 , pp. 109–118, 2018, [Online]. Available: https://sid.ir/paper/371453/en

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