Simulation of rainfall events for design purposes with inadequate data

δείτε την πρωτότυπη σελίδα τεκμηρίου
στον ιστότοπο του αποθετηρίου του φορέα για περισσότερες πληροφορίες και για να δείτε όλα τα ψηφιακά αρχεία του τεκμηρίου*



Simulation of rainfall events for design purposes with inadequate data (EN)

Zarris, D (EN)
Koutsoyiannis, D (EN)

conferenceItem (EN)

2014-03-01T02:54:18Z
1999 (EN)


Recently, the new concept of using continuous simulation in hydraulic design attracts interest. However, the absence of long rainfall records with appropriate temporal resolution, coupled with the requirement of simulating a vast number of synthetic events to calculate the flood peak for a given exceedance probability have become a barrier to the use of such approaches. Therefore, the use of design storms based on local intensity-duration-frequency (IDF) curves remains at present the most popular method not only for its simplicity but mainly because most frequently the IDF curves represent the only available information on local rainfall. Also, IDF based approaches assure the reproduction of rainfall extremes whereas continuous simulation models may fail to do so. An intermediate method lying in between the traditional design storm approach and the continuous simulation approach is presented. The method is based on, and uses as the only input, the IDF curves of a particular catchment. The main concept is to keep the design storm approach for the determination of the total characteristics of the design storm event, extracted from the IDF curves, and use a disaggregation technique to generate an ensemble of alternative hyetographs. The stochastically generated hyetographs are then entered into a rainfall - runoff model and then routed through the hydrosystem in order to simulate its hydraulic performance. The proposed method is demonstrated via examples involving sewer systems and dam spillways. (EN)

Rain and rainfall--Statistical methods--Congresses (EN)
Simulation (EN)

Hydraulic design (EN)
IDF curves (EN)

24th General Assembly of the European Geophysical Society (EN)




*Η εύρυθμη και αδιάλειπτη λειτουργία των διαδικτυακών διευθύνσεων των συλλογών (ψηφιακό αρχείο, καρτέλα τεκμηρίου στο αποθετήριο) είναι αποκλειστική ευθύνη των αντίστοιχων Φορέων περιεχομένου.