PRIMARY SALINITY MODELING USING A SEMI-DISTRIBUTED HYDROLOGICAL MODEL

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REZAIE M.; ALIZADEH H.; EHTIAT M.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2018 | Volume:13 | Issue:4 Page(s): 64-74

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Information Journal Paper

Title

PRIMARY SALINITY MODELING USING A SEMI-DISTRIBUTED HYDROLOGICAL MODEL

Author(s)

REZAIE M. | ALIZADEH H. | EHTIAT M. | Issue Writer Certificate

Keywords

HYDROLOGIC MODELQ1

SEMI- DISTRIBUTEDQ1

SWATQ1

PRIMARY SALINITYQ1

SUFI2Q1

Abstract

Salinity of water resources is a common problem at many river basins all over the country. Helleh River Basin (HRB) with semi-arid climate located at south of Iran is one of such basins, where primary (natural) sources such as salt diapirs and salt formations are the main sources of salinity. This study deals with developing a basin-scale model for analysis of water resources salinity. The model consists of two modules of water balance and salt balance. SWAT model takes the role of water balance module and the salt balance module is developed in an external programming environment. It is worth mentioning that the original version of SWAT is not capable of modeling soil and water salinity. The model is applied to Shoor River, a highly saline river, located at upstream part of HRB and SUFI2 algorithm is utilized for model calibration and validation. Calibration is performed based on monthly records of discharge and TDS for the period of 1995-2000 at Shekastian hydrometric station on Shoor River. Calibration resultsshowed that for the best parameters' estimation, goodness-of-fit measures of R-squared (R2) and Nash-Sutcliff (NS) respectively were 0.76 and 0.73 for discharge and 0.63 and 0.56 for TDS. Also validation was based on the 2001-2003 observations where R2 and NS related to the best estimation were obtained respectively as 0.81 and 0.71 for discharge and 0.81 and 0.65 for TDS. Results demonstrated the reliable performance of the model for analyzing river basin’s water and salt regimes.

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APA: Copy

REZAIE, M., ALIZADEH, H., & EHTIAT, M.. (2018). PRIMARY SALINITY MODELING USING A SEMI-DISTRIBUTED HYDROLOGICAL MODEL. IRAN-WATER RESOURCES RESEARCH, 13(4 ), 64-74. SID. https://sid.ir/paper/100322/en

Vancouver: Copy

REZAIE M., ALIZADEH H., EHTIAT M.. PRIMARY SALINITY MODELING USING A SEMI-DISTRIBUTED HYDROLOGICAL MODEL. IRAN-WATER RESOURCES RESEARCH[Internet]. 2018;13(4 ):64-74. Available from: https://sid.ir/paper/100322/en

IEEE: Copy

M. REZAIE, H. ALIZADEH, and M. EHTIAT, “PRIMARY SALINITY MODELING USING A SEMI-DISTRIBUTED HYDROLOGICAL MODEL,” IRAN-WATER RESOURCES RESEARCH, vol. 13, no. 4 , pp. 64–74, 2018, [Online]. Available: https://sid.ir/paper/100322/en

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