Extreme Rainfall Return Periods using Gumbel and Gamma Distribution
K. Sasireka1, C.R. Suribabu2, T.R. Neelakantan3
1K. Sasireka, Department of Civil Engineering, SASTRA Deemed University, Thanjavur (Tamil Nadu), India.
2C. R. Suribabu, Department of Civil Engineering, SASTRA Deemed University, Thanjavur (Tamil Nadu), India.
3T. R. Neelakantan, Department of Civil Engineering, Kalasalingam Academy of Research and Education College, Krishnankoil (Tamil Nadu), India.
Manuscript received on 26 November 2019 | Revised Manuscript received on 15 December 2019 | Manuscript Published on 31 December 2019 | PP: 26-29 | Volume-8 Issue-4S2 December 2019 | Retrieval Number: D10071284S219/2019©BEIESP | DOI: 10.35940/ijrte.D1007.1284S219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Extreme rainfall amount at various return periods is one of the key inputs in the design of various hydraulic structures. In order to reduce damages that may arise due to extreme rainfall, it is very important to estimate accurately by a suitable probability distribution. Gumbel and Gamma distributions are widely applied to fit the extreme rainfall events. In the present work, an attempt is made to find maximum rainfall that could occur at various return periods, (10, 20, 50, 75, 100 and 200 years) for Tiruchirappalli city located in India. The rainfall data starting from the year 1904 to 2010 is used to predict extreme rainfall. Akaike Information Criteria (AIC) and Bayesian information criteria (BIC) were employed to determine the best probability distribution for rainfall data belongs to Tiruchirappalli station.
Keywords: Extreme Rainfall, Hydraulic Structures, Probability Distribution.
Scope of the Article: Behaviour of Structures