VARIATIONAL DATA ASSIMILATION FOR A NONLINEAR HYDRAULIC MODEL

Authors
CHERTOK DL LARDNER RW
Citation
Dl. Chertok et Rw. Lardner, VARIATIONAL DATA ASSIMILATION FOR A NONLINEAR HYDRAULIC MODEL, Applied mathematical modelling, 20(9), 1996, pp. 675-682
Citations number
19
Categorie Soggetti
Operatione Research & Management Science",Mathematics,"Operatione Research & Management Science",Mathematics,Mechanics
Journal title
Applied mathematical modelling → ACNP
ISSN journal
0307904X
Volume
20
Issue
9
Year of publication
1996
Pages
675 - 682
Database
ISI
SICI code
0307-904X(1996)20:9<675:VDAFAN>2.0.ZU;2-R
Abstract
A method is developed for the optimal estimation of the parameters in a fully nonlinear model of flow in a channel. The data assimilated con sist of values of the water surface elevation during a given interval. The method is based on the adjoint method of optimal control. It is s hown that accurate values of the parameters can be estimated, and the estimates are stable with respect to random perturbations of the data provided that data from a sufficient number of locations are available for assimilation.