Modelling the time-dependent nature of the rainfall-runoff relationships using on-line identification

Hydrological applications of weather radar

Auteurs :
TROCH, P. A.
DE TROCH, F. P.
VAN HYFTE, J.
CLUCKIE, I. D.
COLLIER, C. G.

Description :
This paper focusses on the problem of real-time calibration of the time-variant rainfall-runoff relationship. Two different approaches to adaptive modelling of dynamic systems, i.e. firstly the introduction of a « forgetting » factor and secondly the use of an additive Q matrix into the recursive algorithms for the linear parameter estimation problem, are compared. It is found that, from an operational standpoint, the use of an additive Q matrix leads to better forecasting performance. The choice of the additional design parameters however is not trivial and in this paper it is based on a simulation study using several storm events for subcatchments of the river Meuse, Belgium.


Type de document :
Article de monographie

Source :
, p. 519-530, Collation : Illustration, Références bibliographiques : 14 réf.

Date :
1991

Editeur :
Pays édition : Royaume-Uni, Chichester, Sussex, Ellis Horwood