Juan José Sanz Donaire

A LA BÚSQUEDA DE PERIODICIDADES EN LOS VALORES PLUVIOMÉTRICOS DEL NORTE GRANDE DE CHILE

espanolEl presente trabajo constituye una primera aproximacion a las periodicidades en los valores pluviometricos de las tres regiones mas septentrionales de Chile, esto es, XV, I y II: Arica y Parinacota; Tarapaca; y Antofagasta, respectivamente. Tras haber sometido los datos a un rellenado de las series faltantes se ha podido operar en la determinacion de componentes no aleatorios (aplicacion detests adecuados), sino ritmicos, en los valores. Se ha constatado que, lejos de una tendencia, excesivamente general, se destacan las repeticiones a los 3, 5, 8-9, 13 y 22 anos que habran de cotejarse con los posibles mecanismos de produccion de lluvia ya establecidos. EnglishThis paper is the first approach to periodicity patterns in the rainfall values of the northernmost regions of Chile: Arica and Parinacota, Tarapaca and Antofagasta. After completing as many series as possible with a bivariate regression model, once monthly data were stationarized, and some randomness tests were used to recognize its absence, periodic patterns of 3, 5, 8-9, 13 and 22 years were displayed, which have to be fitted to known precipitation mechanisms.

Verdad geográfica de los humedales en La Araucana de Alonso de Ercilla

Alonso de Ercillas work has been an object of analysis from numerous points of view, specially literary, historical and even patriotic, but scarcely there exist studies of his geographical reality. To refilling this hollow I propose to contribute some information, with special support in the treatment that the author realizes of the wetlands or higrocoras.

Pautas espaciales en la variabilidad de las precipitaciones españolas

This paper shows a study in depth of the rainfall geographical variability in Spain and Gibraltar. Data used in the analysis were not row but percentage of the deviation from mean, so that periods of high and low precipitation were considered. Two methods were essayed: hierarchical cluster and a grouping