Time of concentration: a paradox in modern hydrology |
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| Authors: | S Grimaldi A Petroselli F Tauro M Porfiri |
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| Institution: | 1. Dipartimento per l'Innovazione nei sistemi Biologici, Agroalimentari e Forestali (DIBAF Department) , University of Tuscia, Via San Camillo De Lellis , I-01100 , Viterbo , Italy;2. Honors Center of Italian Universities (H2CU), Sapienza University of Rome , Via Eudossiana 18, I-00184 , Roma , Italy;3. Department of Mechanical and Aerospace Engineering , Polytechnic Institute of New York University, Six MetroTech Center , Brooklyn , NY , 11201 , USA salvatore.grimaldi@unitus.it;5. Dipartimento di scienze e tecnologie per l'Agricoltura, le Foreste, la Natura e l'Energia (DAFNE Department) , University of Tuscia, Via San Camillo De Lellis , I-01100 , Viterbo , Italy;6. Department of Mechanical and Aerospace Engineering , Polytechnic Institute of New York University, Six MetroTech Center , Brooklyn , NY , 11201 , USA;7. Dipartimento di Ingegneria Civile, Edile e Ambientale (DICEA Department) , Sapienza University of Rome , I-00184 , Rome , Italy;8. Department of Mechanical and Aerospace Engineering , Polytechnic Institute of New York University, Six MetroTech Center , Brooklyn , NY , 11201 , USA |
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| Abstract: | Abstract The time of concentration is a primary parameter for a variety of modern hydrological models adopted in professional and scientific communities. Nevertheless, a universally accepted working definition of this parameter is currently lacking and several definitions can be found in the technical literature along with related estimation procedures. This study brings to light the inherent variability of these definitions through the empirical analysis of four small basins. These case studies demonstrate that available approaches for the estimation of the time of concentration may yield numerical predictions that differ from each other by up to 500%. Editor D. Koutsoyiannis Citation Grimaldi, S., Petroselli, A., Tauro, F. and Porfiri, M., 2012. Time of concentration: a paradox in modern hydrology. Hydrological Sciences Journal, 57 (2), 217–228. |
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| Keywords: | time of concentration travel time lag time ungauged basins |
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