Resumen: Se presentan datos acerca de las características ambientales del Glaciar del Infierno y de la regresión sufrida en el Último siglo, así como los valores de los caudales de fusión de dos ciclos diarios en este glaciar, medidos a finales de dos veranos consecutivos (años 1998 y 1999). La relación entre este dato y los ritmos térmicos es muy estrecha, lo cual permite disponer de un dato más, de gran importancia, para explicar el control ambiental en los sistemas de drenaje de la fusión glaciar, así como la acusada regresión glaciar de las últimas décadas, indicativa de balances entre la acumulación nival y la ablación claramente negativos. Los datos se acompañan de medidas de retroceso glaciar entre los veranos de 1998 y 1999.Palabras clave: regresión glaciar, caudales de f~~s i ó n , ciclo diario, glaciares pirenaicos.
Abstract:Data are presented about the environmental characters of tlie Infiernos glacier and of the regression suffered in the last century, as well as the meltwater flow values corresponding to two daily cycle of the Infierno glacier. These values were measured at the end of the summer of 1998 and 1999. There is a close relationship between these data and botli thermic rythms. This fact suggests that meltwater flow should become a useful additional parameter to explain the environmental control of the drainage systems derived from the glacier fusion, as well as the serious glacier regression happened in tlie last decades, indicative of balances between the accumulation nival and the ablation clearly negative. The data are accompanied of measures of regression glacier among the summers of 1998 and 1999.
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