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www.nat-hazards-earth-syst-sci.net/4/375/2004/
doi:10.5194/nhess-4-375-2004
© Author(s) 2004. This work is licensed
under a Creative Commons License.
Establishment of IDF-curves for precipitation in the tropical area of Central Africa - comparison of techniques and results
1Department of Meteorological Research and Development, Royal Meteorological Institute of Belgium, Ringlaan 3, B–1180 Brussels, Belgium
2National Agency of Météorology and Télédétection by Satellite (METTELSAT), Kinshasa, Congo
Abstract. The establishment of Intensity-Duration-Frequency (IDF) curves for precipitation remains a powerful tool in the risk analysis of natural hazards. Indeed the IDF-curves allow for the estimation of the return period of an observed rainfall event or conversely of the rainfall amount corresponding to a given return period for different aggregation times.
There is a high need for IDF-curves in the tropical region of Central Africa but unfortunately the adequate long-term data sets are frequently not available. The present paper assesses IDF-curves for precipitation for three stations in Central Africa. More physically based models for the IDF-curves are proposed. The methodology used here has been advanced by Koutsoyiannis et al. (1998) and an inter-station and inter-technique comparison is being carried out.
The IDF-curves for tropical Central Africa are an interesting tool to be used in sewer system design to combat the frequently occurring inundations in semi-urbanized and urbanized areas of the Kinshasa megapolis.
Full Article (PDF, 861 KB)
Citation: Mohymont, B., Demarée, G. R., and Faka, D. N.: Establishment of IDF-curves for precipitation in the tropical area of Central Africa - comparison of techniques and results, Nat. Hazards Earth Syst. Sci., 4, 375-387, doi:10.5194/nhess-4-375-2004, 2004. Bibtex EndNote Reference Manager XML
