|
Titre :
|
Screening of hydrological data
|
|
Titre original:
|
Sélection des données hydrologiques
|
|
Auteurs :
|
E. Dahmen ;
M. Hall
|
|
Type de document :
|
ouvrage
|
|
Editeur :
|
Wageningen [NLD] : ILRI, 1990
|
|
Collection :
|
ILRI publication 49
|
|
Format :
|
58p + disquette
|
|
Langues:
|
= Anglais
|
|
Catégories :
|
HYDROLOGIE ET HYDRAULIQUE
|
|
Mots-clés:
|
HYDROLOGIE
;
ANALYSE DE DONNEES
;
ANALYSE DE VARIANCE
|
|
Résumé :
|
Hydrological data for water-management studies should be stationary, consistent, and homogeneous when they are used in frequency analyses or systems simulations. A simple but efficient procedure for screening these data is to test annual or seasonal time series for absence of trend and stability of variance and mean. If required, this basic procedure can be extended to include tests for absence of persistence (with the first serial-correlation coefficient) and relative homogeneity and consistency (with double-mass analysis). Applied to proportionality factors, the basic procedure offers an alternative way to evaluate the significance of slope changes found in double-mass lines.
|
