A stochastic disaggregation method for design storm and flood synthesis

Koutsoyiannis, D

dc.contributor.author	Koutsoyiannis, D	en
dc.date.accessioned	2014-03-01T01:09:41Z
dc.date.available	2014-03-01T01:09:41Z
dc.date.issued	1994	en
dc.identifier.issn	0022-1694	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/11141
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.classification	Water Resources	en
dc.subject.other	design storm	en
dc.subject.other	flood synthesis	en
dc.subject.other	rainfall disaggregation	en
dc.subject.other	stream discharge	en
dc.subject.other	Disaggregation	en
dc.subject.other	Flood Routing	en
dc.subject.other	Modelling-Mathematical	en
dc.subject.other	Rainfall	en
dc.subject.other	Flood control	en
dc.subject.other	Hydrology	en
dc.subject.other	Rain	en
dc.subject.other	Runoff	en
dc.subject.other	Storms	en
dc.subject.other	Outflow peaks	en
dc.subject.other	Rainfall	en
dc.subject.other	Temporal distribution	en
dc.subject.other	Surface water resources	en
dc.title	A stochastic disaggregation method for design storm and flood synthesis	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/0022-1694(94)90078-7	en
heal.identifier.secondary	http://dx.doi.org/10.1016/0022-1694(94)90078-7	en
heal.language	English	en
heal.publicationDate	1994	en
heal.abstract	A simple technique for short-scale rainfall disaggregation is developed and studied both theoretically and empirically. This technique can be combined with a variety of rainfall models. The simplest implementation of the technique for a Markovian structure at a discrete time with only three parameters is studied in detail as an easy and convenient engineering tool for design storm and flood studies. Combining the disaggregation technique with a succession of simple hydrological models, i.e. a production function, a unit hydrograph and a flood routing model, we form a stochastic approach for design storm and flood synthesis. Similar to common engineering methods, the proposed method starts with the selection of certain characteristics of the design storm (i.e. its duration and total depth that correspond to a given return period). Subsequently, the method generates a series of probable time distributions by disaggregating the given total depth into incremental depths. Then the series of hyetographs is routed through the hydrological models and the result is the conditional probability distribution function of the outflow peak of the hydraulic construction studied, given the duration and total storm depth. From this distribution we can adopt the design discharge either as the conditional expected value of the outflow peak or as a value corresponding to a selected probability level. The method is illustrated with a real-world example and compared with common engineering methods. © 1994.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Journal of Hydrology	en
dc.identifier.doi	10.1016/0022-1694(94)90078-7	en
dc.identifier.isi	ISI:A1994NF77000011	en
dc.identifier.volume	156	en
dc.identifier.issue	1-4	en
dc.identifier.spage	193	en
dc.identifier.epage	225	en