Rado Yendra, - and Hartono, - and Ari Pani Desvina, - and Nizam Muhaijir, - and DEDI IRAWAN, - (2016) Relation Model of Storm Wet Duration and Storm Intensity for Various Rainfall Aggregation Levels using Copula Method. Global Journal of Pure and Applied Mathematics, 12 (6). pp. 4749-4758. ISSN 0973-1768 (print) 0973-9750 (online)

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Abstract

Studies on various hydrological fields such as floods and agriculture are greatly dependent on rainfall data recorded over long periods of time (at least 30 years). Hourly rainfall data recorded over a period of time would result in storm studies which are useful especially in identifying variable relationship models of wet durations and intensity and are able to provide effective information for the aforementioned hydrological studies. In this study, the relation of both variables at various rain aggregation levels are tabled namely in 1 hour, 4 hours, 6 hours, 8 hours, 12 hours and 24 hours using various Archimedean Copula methods. Survey results achieved show that Archimedean Frank Copula method gives the best model for relation of both storm variables mentioned above at all levels of aggregation rainfall, while benefits of the model will continue to decrease with longer aggregation rain levels. This is due to the number of storms that continue to decline as the variable data decreases. Keyword : Aggregation, Archimedean Copula, Frank Copula, storm rainfall

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