ANALYSE GÉOSTATISTIQUE DE LA DISTRIBUTION SPATIALE DES PRÉCIPITATIONS SUR LE VERSANT SUD DU BASSIN DU FLEUVE PARANAPANEMA, DANS LE SUD DU BRÉSIL

V Carmello 1, * Vincent Dubreuil 2 João Lima Sant'Anna 1
* Corresponding author
2 LETG - Rennes - Littoral, Environnement, Télédétection, Géomatique
LETG - Littoral, Environnement, Télédétection, Géomatique UMR 6554
Abstract : This study aims to analyze, from dry (1999-2000) and rainy (2009-2010) years, the rain spatial distribution by geostatistical analysis on the southern slope of Paranapanema river basin, southern Brazil. For the spatial distribution, we used the monthly data of precipitation in eighty-nine weather stations and geostatistical analysis procedures from two software: Arcgis and Variowin. The Kriging is a variable value estimation process, which are distributed in space and / or time. For modeling, we considered the variables nugget, range, sill and the semi-variograms generated by the model application. This technique shows the following results: the agricultural year 2009-2010 had the highest rainfall values, reaching a volume as high as 1.776 mm in the basin eastern and the lowest value was 1.047 mm in the southeast. The lowest values measured during the agricultural year 1999-2000 was 477 mm and the highest values were observed around 1.153 mm in the east and near the northern part of the basin.
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V Carmello, Vincent Dubreuil, João Lima Sant'Anna. ANALYSE GÉOSTATISTIQUE DE LA DISTRIBUTION SPATIALE DES PRÉCIPITATIONS SUR LE VERSANT SUD DU BASSIN DU FLEUVE PARANAPANEMA, DANS LE SUD DU BRÉSIL. XXVIIIe Colloque de l’Association Internationale de Climatologie, Jul 2015, Liège, Belgique. pp.439-444. ⟨halshs-01176811⟩

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