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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(1): 2626-2632
DOI: https://doi.org/10.20546/ijcmas.2019.801.276


Derivation of the Intensity-Duration-Frequency Curve for Annual Maxima Rainfall using Generalised Extreme Value Distribution
M.R. Namitha1* and V. Vinothkumar2
1Department of Agriculture Engineering, Sethu Institute of Technology, Anna University, India
2Department of Farm Machinery and Power, Tamil Nadu Agricultural University, India
*Corresponding author
Abstract:

The analysis of one-day maximum rainfall for 27-years rainfall data in Kumulur region was conducted using Gumbel distribution and Generalized Extreme Value distributions. The parameters of the distributions were estimated using the method of L- moments. Annual one-day maximum rainfall data for 27-years was analyzed and the return levels for 2, 5, 10 and 25-years were calculated using the proposed probability distribution functions. The goodness of fit of the probability distribution was analysed by conducting Chi-square test. It was found that, the annual maxima rainfall data for one day maximum rainfall of Kumulur region fits best with the Generalized Extreme Value distribution. The short duration rainfall depths for 1-hr, 2-hr, 3-hr, 5-hr, and 8-hr were calculated using the Empirical Reduction Formula proposed by the Indian Meteorological Department. The intensity of the obtained rainfall depths was also calculated. The rainfall Intensity-Duration-Frequency (R-IDF) curves were plotted for the region and the corresponding empirical equations were derived.


Keywords: Generalised Extreme Value distribution, Chi-square test, Empirical Reduction Formula, Rainfall Intensity Duration Frequency Curves
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How to cite this article:

 
Namitha, M.R. and Vinothkumar, V. 2019. Derivation of the Intensity-Duration-Frequency Curve for Annual Maxima Rainfall using Generalised Extreme Value Distribution.Int.J.Curr.Microbiol.App.Sci. 8(1): 2626-2632. doi: https://doi.org/10.20546/ijcmas.2019.801.276