Disaggregation modelling of monthly streamflows using a new approach of the method of fragments |
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| Authors: | AT Silva |
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| Institution: | 1. Department of Civil Engineering , Instituto Superior Técnico, Technical University of Lisbon , Lisbon , Portugal artur.tiago.silva@ist.utl.pt |
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| Abstract: | Abstract The method of fragments is applied to the generation of synthetic monthly streamflow series using streamflow data from 34 gauging stations in mainland Portugal. A generation model based on the random sampling of the log-Pearson Type III distribution was applied to each sample to generate 1200 synthetic series of annual streamflow with an equal length to that of the sample. The synthetic annual streamflow series were then disaggregated into monthly streamflows using the method of fragments, by three approaches that differed in terms of the establishment of classes and the selection of fragments. The results of the application of such approaches were compared in terms of the capacity of the method to preserve the main monthly statistical parameters of the historical samples. Editor D. Koutsoyiannis; Associate editor C. Onof Citation Silva, A.T. and Portela, M.M., 2012. Disaggregation modelling of monthly streamflows using a new approach of the method of fragments. Hydrological Sciences Journal, 57 (5), 942–955. |
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| Keywords: | generation of synthetic series disaggregation modelling method of fragments definition of the classes of fragments |
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