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Occurrence of intense rainfall

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Abstract

In order to estimate variability, durations, and multiple occurrences of rainfalls at rates of over 150 mm/h, a mathematical expression is fitted to excessive shortduration rainfall data for the United States. Geographical distributions of average durations and depths of intense rainfall are found to be surprisingly uniform. Prediction of expected rainfall versus return period and calculated risk is considered, as well as variability of time distributions.

Analyse

En vue d’estimer la variabilité, les durées et les occurrences multiples des intensités de pluie supérieures à 150 mm/h pour les U.S.A. une expression mathématique est adaptée aux données des très courtes durées de pluies. On trouve une uniformité surprenante de la distribution géographique des durées moyennes et des hauteurs d’eau correspondant aux fortes précipitations. On considère les prévisions de l’espérance mathématique des fortes intensités en fonction de la période de retour, le risque calculé ainsi que la variabilité des distributions dans le temps.

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References

  1. Jones (D. M. A.), Sims (A. L.). Climatology of instantaneous precipitation rates.Illinois Water Survey (mars 1973), p. 74.

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Altman, F.J. Occurrence of intense rainfall. Ann. Télécommunic. 32, 492–496 (1977). https://doi.org/10.1007/BF03003501

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  • DOI: https://doi.org/10.1007/BF03003501

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