Volume 28, Issue 2 (Summer 2024)
jwss 2024, 28(2): 121-133 |
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Rezaei V, Eslamian S S, abedi koupai J, Gohari A R. Using the Data of Meteorological and Satellite Station in Determining the Intensity of Rainfall in the Kan Basin. jwss 2024; 28 (2) :121-133
URL: http://jstnar.iut.ac.ir/article-1-4405-en.html
URL: http://jstnar.iut.ac.ir/article-1-4405-en.html
Department of Water Science and Engineering, College of Agriculture, Isfahan University of Technology, Isfahan, Iran. , pr.saeid.eslamian@gmail.com
Abstract: (442 Views)
The relationship between intensity-duration-frequency of rainfall is a significant tool for estimating flood discharge. According to the sparsely available rain gauge stations and the development of technology, it is possible to use satellite rainfall data with different temporal and spatial resolutions. PERSIANN rainfall data with a time resolution of 1 and 6 hours were used in this research. Also, the spatial resolution of these data is 0.04 x 0.04 degrees. Rainfall data from synoptic stations around the Kan basin were also used. Three common continuous probability distributions of Gamble, Pearson type 3, and Log Pearson type 3 with return periods of 2, 5, 10, 25, 50, and 100 years were investigated to calculate and check the IDF curve. In general, the precipitation intensity obtained from Gumble's method was more than Pearson Type 3's method. Log Pearson type 3 distribution did not provide acceptable results in this research. The two interpolation methods of inverse distance weighting and empirical Bayesian kriging were used to generalize the frequency intensity curves to the entire Kan basin. The results showed little difference between these two methods, except for Pearson type 3 probability distribution.
Type of Study: Research |
Subject:
Ggeneral
Received: 2024/01/22 | Accepted: 2024/04/20 | Published: 2024/08/31
Received: 2024/01/22 | Accepted: 2024/04/20 | Published: 2024/08/31
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