Regionalization Analysis of SPI and SPEI Drought Indices for Karoon Basin

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Saeidipour M.; RADMANESH F.; Eslamian S. S.; Sharifi M. R.

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Journal: Journal of Water and Soil Science Year:2019 | Volume:23 | Issue:2 Page(s): 397-415

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Information Journal Paper

Title

Regionalization Analysis of SPI and SPEI Drought Indices for Karoon Basin

Author(s)

Saeidipour M. | RADMANESH F. | Eslamian S. S. | Sharifi M. R. | Issue Writer Certificate

Keywords

EvapotranspirationQ2

Dry and wet periodQ1

Regionalization of the basinQ1

SPI and SPEI Drought IndicesQ1

Abstract

The current study was conducted to compute SPI and SPET drought indices due to their multi-scale concept and their ability to analyze different time-scales for selected meteorological stations in Karoon Basin. Regionalization of SPI and SPEI Drought Indices based on clustering analysis was another aim of this study for hydrological homogenizing. Accordingly, to run test through data and determine similar statistical periods, 18 stations were selected. SPI and SPEI values were plotted in the sequence periods graphs and their relationships were analyzed using the correlation coefficient. The results were compared by Pearson correlation coefficient at the significance level of 0. 01. The results showed that correlation coefficients (0. 5-0. 95) were positive and meaningful for all stations and the correlation coefficient between the two indices were increased by enhancing the time-scales. Also, time-scales enhancement decreased the frequency of Dry and wet periods and increased their duration. Through regionalization of basin stations based on clustering analysis, the stations were classified into 7 classes. The results of SPEI regionalization showed that the frequency percentage of the normal class was more than those of dry and wet classes.

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APA: Copy

Saeidipour, M., RADMANESH, F., Eslamian, S. S., & Sharifi, M. R.. (2019). Regionalization Analysis of SPI and SPEI Drought Indices for Karoon Basin. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), 23(2 ), 397-415. SID. https://sid.ir/paper/363717/en

Vancouver: Copy

Saeidipour M., RADMANESH F., Eslamian S. S., Sharifi M. R.. Regionalization Analysis of SPI and SPEI Drought Indices for Karoon Basin. WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES)[Internet]. 2019;23(2 ):397-415. Available from: https://sid.ir/paper/363717/en

IEEE: Copy

M. Saeidipour, F. RADMANESH, S. S. Eslamian, and M. R. Sharifi, “Regionalization Analysis of SPI and SPEI Drought Indices for Karoon Basin,” WATER AND SOIL SCIENCE (JOURNAL OF SCIENCE AND TECHNOLOGY OF AGRICULTURE AND NATURAL RESOURCES), vol. 23, no. 2 , pp. 397–415, 2019, [Online]. Available: https://sid.ir/paper/363717/en

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