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| Titel |
Construction of intensity-duration-frequency (IDF) curves for precipitation with annual maxima data in Rwanda, Central Africa |
| VerfasserIn |
G. R. Demarée, H. Vyver |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7340
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| Digitales Dokument |
URL |
| Erschienen |
In: 8th EGU Alexander von Humboldt Conference "Natural Disasters, Global Change, and the Preservation of World Heritage Sites" ; Nr. 35 (2013-06-25), S.1-5 |
| Datensatznummer |
250019091
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| Publikation (Nr.) |
 copernicus.org/adgeo-35-1-2013.pdf |
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| Zusammenfassung |
Detailed probabilistic information on the intensity of precipitation in
Central Africa is highly needed in order to cope with the risk analysis of
natural hazards. In the mountainous areas of Rwanda land slides frequently
occur and might cause a heavy toll in human lives. The establishment of
Intensity-Duration-Frequency curves for precipitation in Central Africa
remains a difficult task as adequate long-term data sets for short
aggregation times are usually not available.
In 1962 recording raingauges were installed at several stations in Rwanda.
According to the climatological procedures in use at that time in Congo,
Rwanda and Burundi, maximum monthly and annual precipitation depths for
fixed-time durations of 15, 30, 45, 60 and 120 min were determined from
the rainfall charts. The data set is completed by the monthly and annual
daily precipitation extremes from the non-recording raingauge at the
stations.
The authors used the dataset to establish the IDF-curves for precipitation
at 3 stations in Rwanda having more than 20 yr of operation. The
fixed-hour intervals of multiple 15 min require the use of a technique
converting data from fixed-time intervals into data of arbitrary starting
intervals. Therefore, the van Montfort technique was used. |
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