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- W2291531572 abstract "The objective of this research is to generate Rainfall IDF relationship for North-Western region of Bangladesh. Two common frequency analysis techniques Gumbel and Log Pearson Type III (LPTIII) distribution were used to develop IDF relationship from rainfall data of this region. Yearly maximum rainfall data for last 41 years (1974-2014) from Bangladesh Meteorological Department (BMD) was used in this study. Indian Meteorological Department (IMD) empirical reduction formula was used to estimate short duration rainfall intensity from yearly maximum rainfall data. Results obtained using Gumbel method are slightly higher than LPT III distribution method. Chi-square goodness of fit test was used to determine the best fit probability distribution. The parameters of the IDF equations and coefficient of correlation for different return periods (2, 5, 10, 25, 50 and 100 years) were calculated by using nonlinear multiple regression method. The results obtained presented that in all the cases the correlation coefficient is very high representing goodness of fit of the formulae to estimate IDF curves in the region of interest. It was found that intensity of rainfall decreases with increase in rainfall duration. Further, a rainfall of any given duration will have a larger intensity if its return period is large. Keyword:Rainfall Intensity, Rainfall Duration, Rainfall Frequency, Gumbel's Extreme Value Distribution Method, Log Pearson Type III" @default.
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- W2291531572 date "2015-09-07" @default.
- W2291531572 modified "2023-09-23" @default.
- W2291531572 title "Generation of Rainfall Intensity-Duration-Frequency Relationship for North-Western Region in Bangladesh" @default.
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- W2291531572 doi "https://doi.org/10.6084/m9.figshare.1536336.v1" @default.
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