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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/14955
Title: An extended hybrid model for synthetic unit hydrograph derivation
Authors: Singh P.K.
Bhunya P.K.
Mishra S.K.
Chaube U.C.
Published in: Journal of Hydrology
Abstract: The hybrid model (HM) is extended for the derivation of synthetic unit hydrographs by introducing the concept of translation, which is essential for describing the behavior of the dynamic system. A generalized form of the extended hybrid model (EHM) is also presented in the present study. Further synthesis of the generalized form of the EHM shows that the Nash and hybrid models are the special cases of the EHM. The workability of EHM and HM, with two serially connected units is compared with Nash model on five catchments ranging from 21 km2 to 452.25 km2. The study reveals that the extended hybrid model works significantly better than the hybrid model for large catchments and vice versa. The study also reveals that the Nash model performs poorer than both the models in all the cases. A sensitivity analysis of the proposed model reveals that the peak discharge (Qp) is more sensitive to both storage coefficients K1 and K2 than translation time T for both small as well as large catchments. © 2007 Elsevier B.V. All rights reserved.
Citation: Journal of Hydrology (2007), 336(43924): 347-360
URI: https://doi.org/10.1016/j.jhydrol.2007.01.006
http://repository.iitr.ac.in/handle/123456789/14955
Issue Date: 2007
Keywords: Catchment storage
Channel routing
Hybrid model
Peak discharge
Reservoirs routing
Synthetic unit hydrograph
ISSN: 221694
Author Scopus IDs: 57208371734
8268278000
55463271000
6601988913
Author Affiliations: Singh, P.K., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, Roorkee 247 667, UA, India
Bhunya, P.K., National Institute of Hydrology, Roorkee 247 667, UA, India
Mishra, S.K., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, Roorkee 247 667, UA, India
Chaube, U.C., Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, Roorkee 247 667, UA, India
Corresponding Author: Mishra, S.K.; Department of Water Resources Development and Management, Indian Institute of Technology, Roorkee, Roorkee 247 667, UA, India; email: skm61fwt@iitr.ernet.in
Appears in Collections:Journal Publications [WR]

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