Determination of Hydrological Homogenous Regions in the West of Hamoun-Jazmourian River Basin

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JAHANSHAHI A.; SHAHEDI K.; SOLAIMANI K.; MOGHADDAMNIA A.

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Journal: IRAN-WATER RESOURCES RESEARCH Year:2019 | Volume:15 | Issue:1 Page(s): 223-235

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Title

Determination of Hydrological Homogenous Regions in the West of Hamoun-Jazmourian River Basin

Author(s)

JAHANSHAHI A. | SHAHEDI K. | SOLAIMANI K. | MOGHADDAMNIA A. | Issue Writer Certificate

Keywords

ClusteringQ2

K-means AlgorithmQ1

PCA AlgorithmQ1

Davies-Bouldin CriterionQ1

Abstract

Extracted hydrological similarity, derived from the catchments’ similar reaction to the input rainfall, is the basis for classification of catchments for the transfer of information, hydrological understanding and as well as understanding the potential impacts of environmental changes. Extensive available hydrological characteristics (precipitation, temperature, streamflow data and physiographic attributes of catchments) can be used to extract hydrological similar catchments. In this research cluster analysis, as a new and effective method, was used for grouping catchments into several groups or clusters. In order to understand the hydrologic similarity, 28 characteristics (descriptors) of location, physiographic, climatic, and land use of 15 catchments with heterogeneous characteristics located in the western part of the Hamoun-Jazmourian river basin were used. Selection of characteristics was done based on the hydrological response specification which provided insight into the hydrologic performance of the catchments. The components and main characteristics were extracted in RStudio software, using PCA Algorithm and then the number of optimum clusters was determined against the Davies-Bouldin Criterion and the Clustering of the catchments into homogenous classes was performed using K-means Algorithm. The results showed that the latitude of gravity center, area, length of main river, height of hydrometric gauge, slope and percentage of poor rangelands are the main attributes out of 28 attributes. Also, the Davies-Bouldin Criterion was 2. 46 for the number of clusters equal to 3, which indicated the number of clusters in the K-means Algorithm. After Clustering the catchments, it was determined that most of the catchments in the same clusters are located in the vicinity of each other. The results of this study enable us to interpret the hydrologic behavior in the study area for purposes such as streamflow regionalization in ungauged catchments of this region and regional flood frequency analysis.

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APA: Copy

JAHANSHAHI, A., SHAHEDI, K., SOLAIMANI, K., & MOGHADDAMNIA, A.. (2019). Determination of Hydrological Homogenous Regions in the West of Hamoun-Jazmourian River Basin. IRAN-WATER RESOURCES RESEARCH, 15(1 ), 223-235. SID. https://sid.ir/paper/100067/en

Vancouver: Copy

JAHANSHAHI A., SHAHEDI K., SOLAIMANI K., MOGHADDAMNIA A.. Determination of Hydrological Homogenous Regions in the West of Hamoun-Jazmourian River Basin. IRAN-WATER RESOURCES RESEARCH[Internet]. 2019;15(1 ):223-235. Available from: https://sid.ir/paper/100067/en

IEEE: Copy

A. JAHANSHAHI, K. SHAHEDI, K. SOLAIMANI, and A. MOGHADDAMNIA, “Determination of Hydrological Homogenous Regions in the West of Hamoun-Jazmourian River Basin,” IRAN-WATER RESOURCES RESEARCH, vol. 15, no. 1 , pp. 223–235, 2019, [Online]. Available: https://sid.ir/paper/100067/en

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