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Paper Information

Journal:   IRAN-WATER RESOURCES RESEARCH   Winter 2020 , Volume 16 , Number 4 ; Page(s) 241 To 249.
 
Paper: 

Comparison Of Spatial Scaling Of Peak Discharge In Caspian Sea Basins And Karkheh River Basin

 
 
Author(s):  Rahimi M.*, Modarres R., Soltani S.
 
* Department of Natural Resources, Isfahan University of Technology, Isfahan, Iran
 
Abstract: 
The relationship between peak flood and watershed area has always ben used for predition at ungaged basins. In a region with homogenous hydrologic resonse this relationship changes with a similar ratio which is called simple saling. If this ratio changes it would result in multiscaling relationship between peak floos and watrshed area and therefore, basin area cannot be used for flood discharge estimation at ungagfed basin alone. Therfore it is necessary ro evalute this before developing regional flood model. This study investigates the spatial scale method in two Caspian Sea basin and Karkheh river basin and then compares the results of two basin. To this end, peak discharge for the 46 hydrometric stations in the Caspian Basin and 24 stations in the Karkheh basin have been selected. These stations have similar hydrological behavior among the stations in their basin. The statistical method of the spatial scale at these stations was performed using the probability weight moments of annual peak discharge and area covered by each station. The results showed that in the Caspian Sea basin the parameter of the spatial scale is simple and in the Karkhe basin the multiscale mode of the spatial scale exists. Therefore, it can be said that for estimating the discharge in the ungaged regions for the Karkheh basin, it is not possible to use the flood index and the discharge-area power relationship. While this is feasible in the Caspian Sea basin.
 
Keyword(s): Spatial Scale Parameter,Peak Discharge,Probability Weight Moment,Basin Area
 
 
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APA: Copy

RAHIMI, M., & MODARRES, R., & SOLTANI, S. (2020). Comparison of Spatial Scaling of Peak Discharge in Caspian Sea Basins and Karkheh River Basin. IRAN-WATER RESOURCES RESEARCH, 16(4 ), 241-249. https://www.sid.ir/en/journal/ViewPaper.aspx?id=837704



Vancouver: Copy

RAHIMI M., MODARRES R., SOLTANI S.. Comparison of Spatial Scaling of Peak Discharge in Caspian Sea Basins and Karkheh River Basin. IRAN-WATER RESOURCES RESEARCH. 2020 [cited 2022January29];16(4 ):241-249. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=837704



IEEE: Copy

RAHIMI, M., MODARRES, R., SOLTANI, S., 2020. Comparison of Spatial Scaling of Peak Discharge in Caspian Sea Basins and Karkheh River Basin. IRAN-WATER RESOURCES RESEARCH, [online] 16(4 ), pp.241-249. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=837704.



 
 
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