The intensity-duration-frequency (IDF) relationships bound rainfall intensity to duration and return period. These relationships are commonly used as an input in design of many hydraulic structures and drainage systems. Empirical IDF are estimated on the basis of recorded maximum annual precipitation of given durations, often ranging from 1 h to 24 h. For shorter durations, extrapolations are applied. In this paper, maximum annual precipitation for durations shorter than 1 h (namely, 30 min and 10 min) are evaluated using a rainfall disaggregation model and then used for the evaluation of the IDF relationship. A comparison of values obtained with the extrapolated values is then performed, and the results are discussed. Keywords: intensity-duration-frequency curves, rainfall disaggregation, entropy. © 2013 AIP Publishing LLC.
IDF relationships for short duration rainfall / Montesarchio, V.; Napolitano, F.; Russo, F.; Spina, S.. - In: AIP CONFERENCE PROCEEDINGS. - ISSN 0094-243X. - ELETTRONICO. - 1558:(2013), pp. 1685-1688. (Intervento presentato al convegno 11th International Conference of Numerical Analysis and Applied Mathematics 2013, ICNAAM 2013 tenutosi a Rodi, Grecia nel 21 September 2013 through 27 September 2013) [10.1063/1.4825854].
IDF relationships for short duration rainfall
F. NapolitanoSecondo
;F. RussoPenultimo
;
2013
Abstract
The intensity-duration-frequency (IDF) relationships bound rainfall intensity to duration and return period. These relationships are commonly used as an input in design of many hydraulic structures and drainage systems. Empirical IDF are estimated on the basis of recorded maximum annual precipitation of given durations, often ranging from 1 h to 24 h. For shorter durations, extrapolations are applied. In this paper, maximum annual precipitation for durations shorter than 1 h (namely, 30 min and 10 min) are evaluated using a rainfall disaggregation model and then used for the evaluation of the IDF relationship. A comparison of values obtained with the extrapolated values is then performed, and the results are discussed. Keywords: intensity-duration-frequency curves, rainfall disaggregation, entropy. © 2013 AIP Publishing LLC.| File | Dimensione | Formato | |
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Montesarchio_IDF-relationships-for_2013.pdf
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