Application of Multivariate Approach in the Analysis of Hydrological Phenomena (Case Study: Flood in Boustan Dam Watershed of Golestan Province)

Document Type : Research Paper

Authors

1 Department of Watershed Management, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

2 Water Engineering Department, College of Water and Soil Engineering, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran

Abstract

Peak, volume, and duration are the main characteristics of a flood. Therefore, in designing hydraulic structures, the frequency analysis of flood should be done considering the multivariate point of view in order to decrease the flood damage. Since the interaction of dependent variables is not considered in the univariate frequency analysis, it can lead to underestimating or overestimating the magnitude of a certain event. Copula is a powerful tool, which has the capability and efficiency required for concurrent analysis of behavior of the variables and the correlation among them. This research emphasizes the necessity of bivariate analysis of flood in designing the hydrological structures and decreasing the flood damage. Therefore, copula functions were used for bivariate frequency analysis of flood (discharge and volume).

Keywords

Main Subjects

References

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Irrigation Sciences and Engineering
Volume 43, Issue 2
July 2020
Pages 35-48

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History

  • Receive Date: 21 October 2017
  • Revise Date: 02 June 2018
  • Accept Date: 09 June 2018
  • Publish Date: 21 June 2020

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