Optimization of a snow network by multivariate statistical analysis

نویسندگان

  • G. GALEATI
  • G. ZILLI
چکیده

The aim of the present work is that of analysing the data of snow-cover measurements carried out in the northeastern Alps by the Italian National Electricity Board (ENEL) since 1966, in order to select a reduced number of measurement stations from which to evaluate the water equivalent amount. The selection was based on cluster methods for identification of homogeneous areas and afterwards on principal component analysis for individualization of representative stations. The results confirm that by employing a set of reduced input data the output is only moderately affected. Rationalisation d'un réseau de stations de mesure de la couche de la neige par les méthodes statistiques de 1'analyse multivariate RESUME Le but du travail est d'analyser les mesures de l'épaisseur de la couche de la neige relevées par l'ENEL depuis 1966 dans les Alpes Nord-Orientales en vue de sélectionner un nombre réduit de stations par lesquelles il est possible d'obtenir un contrôle plus soigné de l'équivalent en eau. La sélection a été réalisée en identifiant des zones homogènes et puis par l'analyse en composantes principales pour choisir les stations représentatives. Les résultats confirment que si on utilise comme entree un série de données ainsi réduites, le résultat final ne subit pas de modifications appréciables.

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تاریخ انتشار 2007