A rainfall‐runoff analysis of the geomorphologic IUH

Juan B. Valdés; Yolanda Fiallo; Ignacio Rodríguez‐Iturbe

doi:10.1029/WR015i006p01421

A rainfall‐runoff analysis of the geomorphologic IUH

Juan B. Valdés, Yolanda Fiallo, Ignacio Rodríguez‐Iturbe

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77 Scopus citations

Abstract

The instantaneous unit hydrograph (IUH) derived from the geomorphologic characteristics of a basin and a timing component, the velocity of the discharge, was presented by Rodríguez‐Iturbe and Valdés (1979). To analyze this geomorphologic IUH in real world basins, a study was carried out on several basins in Venezuela and Puerto Rico. The gemorphologic IUH for each basin was compared with the IUH's derived from the discharge hydrograph produced by a physically based rainfall‐runoff model of the same basins. The effects that the nonlinearities of the rainfall‐runoff model have on the derivation of the IUH are analyzed, and further, controlled experiments are carried out in which the IUH is derived under constant velocity conditions. The geomorphologic IUH's and the ones obtained in the experiments are remarkably similar in all the basins analyzed.

Original language	English (US)
Pages (from-to)	1421-1434
Number of pages	14
Journal	Water Resources Research
Volume	15
Issue number	6
DOIs	https://doi.org/10.1029/WR015i006p01421
State	Published - Dec 1979
Externally published	Yes

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Water Science and Technology

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10.1029/WR015i006p01421

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title = "A rainfall‐runoff analysis of the geomorphologic IUH",

abstract = "The instantaneous unit hydrograph (IUH) derived from the geomorphologic characteristics of a basin and a timing component, the velocity of the discharge, was presented by Rodr{\'i}guez‐Iturbe and Vald{\'e}s (1979). To analyze this geomorphologic IUH in real world basins, a study was carried out on several basins in Venezuela and Puerto Rico. The gemorphologic IUH for each basin was compared with the IUH's derived from the discharge hydrograph produced by a physically based rainfall‐runoff model of the same basins. The effects that the nonlinearities of the rainfall‐runoff model have on the derivation of the IUH are analyzed, and further, controlled experiments are carried out in which the IUH is derived under constant velocity conditions. The geomorphologic IUH's and the ones obtained in the experiments are remarkably similar in all the basins analyzed.",

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AU - Fiallo, Yolanda

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A rainfall‐runoff analysis of the geomorphologic IUH

Abstract

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