Using the TCEV distribution function with systematic and non-systematic data in a regional flood frequency analysis |
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| Authors: | F Francés |
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| Institution: | (1) Departamento de Ingeniería Hidráulica y Medio Ambiente, Universidad Politécnica, Apdo. 22012, 46071 Valencia, Spain, Phone: +34-96 3877 612, Fax: +34-96 3877 618, e-mail: ffrances@hma.upv.es, FR |
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| Abstract: | Due to the social and economic implications, flood frequency analysis must be done with the highest precision. For this reason,
the most suitable statistical model must be selected, and the maximum amount of information must be used. Floods in Mediterranean
rivers can be produced by two different mechanisms, which forces the use of a non-traditional distribution like the TCEV.
The information can be increased by using additional non-systematic data, or with a regional analysis, or both. Through the
statistical gain concept, it has been shown that in most cases the use of additional non-systematic information can decrease
the quantile estimation error in about 50%. In a regional analysis, the␣benefit of additional information in one station,
is propagated to the rest of␣the␣stations with only a small decrease with respect to the at-site equivalent analysis. |
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| Keywords: | : Flood frequency analysis TCEV non-systematic information regional statistical gain |
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