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A semi‐distributed parallel‐type linear reservoir rainfall‐runoff model and its application in Taiwan
Author(s) -
Hsieh LungSheng,
Wang RuYih
Publication year - 1999
Publication title -
hydrological processes
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.222
H-Index - 161
eISSN - 1099-1085
pISSN - 0885-6087
DOI - 10.1002/(sici)1099-1085(19990615)13:8<1247::aid-hyp807>3.0.co;2-w
Subject(s) - hydrograph , surface runoff , outflow , hydrology (agriculture) , flood myth , environmental science , runoff model , conceptual model , calibration , constant (computer programming) , distributed element model , computer science , geology , meteorology , mathematics , geotechnical engineering , statistics , physics , ecology , philosophy , theology , quantum mechanics , database , biology , programming language
The main purpose of this paper is to introduce a semi‐distributed parallel surface rainfall‐runoff conceptual model. In this paper, a general solution of the instantaneous unit hydrograph (IUH) has been derived successfully for N linearly connected reservoirs, each having a different storage constant. The solution is a function of geomorphologic parameters, meteorologic factors and roughness coefficients. The model also takes into account the hydrologic response which is influenced by outflow downstream of a reservoir. For calibration, the shuffled complex evolution (SCE) algorithm is used to search for the global optimal parameters of the model. Because of the parallel structure, the mean roughness parameter of the channel becomes a “conceptual” parameter without a real physical meaning. To evaluate the adaptability of the model adopted, three watersheds around the city of Taipei in Taiwan were chosen to test the effectiveness of the model. The study provides an appropriate rainfall‐runoff model for planning flood mitigation in Taiwan. Copyright © 1999 John Wiley & Sons, Ltd.