Streamflow variations across the southern Andes during the instrumental era

Séminaire de Mariano Masiokas, jeudi 28 juin à 14 h, salle Lliboutry, bâtiment de glaciologie

Résumé/Abstract :
The rivers originating in the southern Andes (18°-55°S) constitute a crucial natural resource and support numerous ecosystems, human populations and a large number of socio-economic activities throughout Chile, western Argentina and southwestern Bolivia. However, the temporal variations in surface runoff in this extensive mountainous region have not yet been assessed comprehensively to identify areas with common hydroclimatic patterns of variability during the instrumental era (early 20th century – present). In this talk we will use an up-to-date database of mean monthly streamflow records from Chile, Bolivia and Argentina to identify the main modes of hydroclimatic variability across the southern Andes. The data will also be used to detect the main large-scale climatic forcings modulating water availability in different sectors of the Cordillera. The analyses provide relevant new results to better understand the Andean hydroclimatic system on a local and regional scale, and can also help improve the management of the water resources in these mountain basins.

Par/by Mariano Masiokas
Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales (IANIGLA-CONICET), Mendoza, Argentina

Séminaire animé par Thomas Condom.